Showing papers on "Sodium sulfite published in 1999"

Comparison of Protein Extraction Solutions for Rice Starch Isolation and Effects of Residual Protein Content on Starch Pasting Properties

Abstract: Protein extraction solutions such as aqueous solutions of sodium hydroxide (0.1 and 0.2 %), sodium lauryl sulfate (SLS, 1.2 %) containing sodium sulfite (0.12 %), and dodecylbenzene sulfonate (DoBS, 1.2 %) containing sodium sulfite (0.12 %) were compared in their protein removal efficiencies during isolation of starch from a rice flour (Ilpumbyo, a nonwaxy Korean rice variety). In addition, the pasting properties of the isolated starch was compared. More than 80 % of the flour protein was extracted in 1 h by stirring the dispersion (1:3, w/v) at room temperature. Repeating the extractions (1 or 2 h for each step) with fresh solution significantly increased the protein removal efficiency. When the extraction in 0.2 % NaOH was repeated four times (1 h for each step) at 25°C, the residual protein content in the isolated rice starch was 0.9 % (DB), equivalent to 86 % removal of the rice protein. Raising the extraction temperature slightly increased the protein solubility, but starch loss also became significant. Among the solutions, DoBS was most effective in removing rice protein whereas SLS was least. The residual protein content had a critical role in determining the pasting characteristics of the isolated starch, showing a negative correlation to the peak viscosity of the starch paste, but a positive correlation to the pasting temperature.

Monolithic tablet for controlled drug release

Abstract: A swellable hydrophilic matrix tablet that delivers drugs in a controlled manner over a long period of time and is easy to manufacture. More specifically, the drug is disposed in a matrix composed of HPMC or polyethylene oxide, in the presence of a salt, which may be a combination of salts. Suitable salts include sodium bicarbonate, sodium chloride, potassium bicarbonate, calcium chloride, sodium bisulfate, sodium sulfite, and magnesium sulfate. Outward diffusion of the drug is controlled by an inwardly progressing hardening reaction between the salt and the dissolution medium, possibly also involving the drug itself.

Determination of formaldehyde in liquid, solid and semisolid pharmaceuticals and cosmetics by flow injection-pervaporation

Abstract: A spectrophotometric method is proposed for the determination of formaldehyde in liquid, solid and semisolid cosmetic and pharmaceutical samples, employing, for the first time in this field, the coupling of a continuous flow configuration to a pervaporation unit. The method is based on the reaction of the analyte with pararosaniline in acidic medium and subsequent formation of a coloured product (alkylsulfonic acid chromophore) with sodium sulfite, which was monitored spectrophotometrically. The method was applied to samples in which the formaldehyde content is regulated by law.

Selective determination of TNT in soil extracts by sequential injection spectrophotometry

Abstract: A rapid sequential injection spectrophotometric method for the selective determination of 2,4,6-trinitrotoluene (TNT) in soil samples is presented. The method is based on a derivatization reaction of TNT with sodium sulfite in a basic acetone medium. The reaction conditions, namely the percentage of acetone used in the reaction, the sample and reagent volumes, the mixing coil volume, and the reaction time, were optimized. The reaction was found to be particularly sensitive to the concentration of acetone; an acetone/water medium of 88% (v/v) acetone was found to be optimal. A study of the response of the method to other explosives demonstrated that the method is selective for TNT. In particular, it was shown that the method had little (<2%) or no response to other secondary explosives such as 2,4- or 2,6-dinitrotoluene (DNT). An average precision of 6.1% RSD was established for five soil samples (n = 4). The limit of detection was 0.5 μg mL-1 for aqueous standards and 80 μg g-1 for ∼300 mg soil samples. A...

Selective binding of docosahexaenoic acid ethyl ester to a silver-ion-loaded porous hollow-fiber membrane

Abstract: Silver ions were loaded at a density of 1 mmol/g onto a sulfonic acid group-containing porous hollow-fiber membrane prepared by radiation-induced graft polymerization of an epoxy group-containing monomer with subsequent modification by reaction with sodium sulfite. The permeability (i.e., permeation flow rate per inside surface area of the hollow fiber) of 4.6% wt/vol bonito oil ethyl ester solution in water/ethanol (7.5:92.5, vol/vol) was 1.7 m/h at a permeation pressure of 0.1 MPa. Breakthrough curves (i.e., concentration changes of the effluent with increasing effluent volume) obtained with docosahexaenoic acid ethyl ester (DHA-Et) overlapped, irrespective of the permeation flow rate. This indicates that a higher rate of DHA-Et adsorption onto the silver ions on the membrane was attained with increasing permeation flow rate. DHA-Et, which was selectively bound to the membrane, was quantitatively eluted with acetonitrile as an eluent. The adsorption characteristics (i.e., binding rate, selectivity and durability for repeated use) of DHA-Et using the silver ion loaded porous hollow-fiber membrane were demonstrated. Feasibility studies will enable comparison of the purification cost of DHA-Et among the other purification techniques.

Pharmaceutical Excipients: Characterization by IR, Rahman, and NMR Spectroscopy

Abstract: Vibrational Spectroscopy Nuclear Magnetic Resonance Spectroscopy Experimental Excipients Acacia Acetic Acid Acetone Acetyltributyl Citrate Acetyltriethyl Citrate Acrylamide/Sodium Acrylate Copolymer, G-400 Acrylic Acid Copolymer Adipic Acid Agar Alcohol Alginic Acid d-Alpha Tocopheryl Polyethylene Glycol 1000 Succinate Ammonium Acetate Ammonium Phosphate Dibasic trans-Anethole Apricot Kernel Oil PEG-6 Esters Ascorbic Acid Ascorbyl Palmitate Aspartame L-Aspartic Acid Benzaldehyde Benzalkonium Chloride Benzethonium Chloride Benzoic Acid Benzophenone Benzyl Alcohol Benzyl Benzoate Boric Acid Butyl Alcohol n-Butylamine Butylated Hydroxyanisole Butylated Hydroxytoluene Caffeine Calcium Acetate, Monohydrate Calcium Carbonate Calcium Phosphate Dibasic, Dihydrate Calcium Phosphate Tribasic Calcium Silicate Calcium Sulfate Calcium Sulfate, Dihydrate Carbomer, 934P Carbopol, 1342 NF Resin Carboxymethylcellulose Sodium Carrageenan Castor Oil Cellulose, Microcrystalline 50M Cellulose, Microcrystalline 90M Cellulose, Microcrystalline Ph102 Cellulose, Microcrystalline Ph200 Cellulose Acetate Phthalate Cellulose Acetate Trimellitate/Trimellitic Acid Cetrimide Cetyl Alcohol Cetylpyridinium Chloride, Anhydrous Chloroform Cholesterol Citric Acid, Anhydrous Citric Acid, Monohydrate Corn Oil PEG-6 Esters Corn Starch, B700 Corn Starch, B810 Corn Starch, B880 Corn Starch, B890 Corn Starch Acrylamide Sodium Acrylate Copolymer, A-140 Corn Starch Acrylamide Sodium Acrylate Copolymer, A-222 Corn Starch Acrylamide Sodium Acrylate Copolymer, D-212 Corn Syrup Solids, M200 Corn Syrup Solids, M250 Corn Syrup Solids, M365 Cottonseed Oil Croscarmellose Sodium Crospovidone B-Cyclodextrin D&C Red # 27 Lake D&C Yellow #10 Lake Denatonium Benzoate Dextrates Dextrin Diacetylated Monoglyceride, 9-40 Dibutyl Phthalate Dibutyl Sebacate, NF Dichloromethane Diethyl Phthalate, NF Diethylene Glycol Monoethyl Ether Dimethicone, NF 20 Dimethyl Sulfoxide Dioctyl Phthalate Docusate Sodium Edetate Disodium, Dihydrate Ethyl Acetate Ethyl Maltol Ethylcellulose, Medium, Viscosity=50 Ethylcellulose, Medium, Viscosity=70 Ethylcellulose, Standard, Viscosity=4 Ethylcellulose, Standard, Viscosity=10 Ethylcellulose, Standard, Viscosity=100 Ethylparaben FD&C Blue #2 Lake FD&C Blue #2 Powder FD&C Red #3 Powder FD&C Red #40 Lake FD&C Red #40 Powder FD&C Yellow #5 Lake FD&C Yellow #5 Powder FD&C Yellow #6 Lake FD&C Yellow #6 Powder D-Fructose Fumaric Acid Gelatin Gentisic Acid Ethanolamide Glucose Glycerin Glycerol Mono-/Di-Caprylate/Caprate, 742 Glycerol Stearate, 191 Glyceryl Behenate Glyceryl Caprylate, 988 Glyceryl Cocoate, 928 Glyceryl Laurate, 312 Glyceryl Monooleate, 18-92 Glyceryl Monooleate, 18-99 Glyceryl Palmitostearate Guanine Gum, Guar Gum, Xanthan Hard Fat, AM Hexylene Glycol Hydroxyethyl Cellulose Hydroxypropyl Cellulose Hydroxypropyl Methylcellulose, E3 PREM Hydroxypropyl Methylcellulose, E15LV PREM Hydroxypropyl Methylcellulose, F4 PREM Hydroxypropyl Methylcellulose, K3 PREM Hydroxypropyl Methylcellulose, K100M PREM Hydroxypropyl Methylcellulose, 2208, K15M PREM CR Hydroxypropyl Methylcellulose, 2208, K100M PREM CR Hydroxypropyl Methylcellulose, 2910, E6 PREM Hydroxypropyl Methylcellulose, 2910, E4M PREM CR Hydroxypropyl Methylcellulose, 2910, E10M PREM CR Hydroxypropyl Methylcellulose, Acetate Succinate, AS-LF Hydroxypropyl Methylcellulose, Phthalate, 50 Hydroxypropyl Methylcellulose, Phthalate, 55 Isobutyl Acetate sec-Isopropyl Alcohol Isopropyl Myristate Isopropyl Palmitate Kaolin Lactic Acid Lactose, Anhydrous Lactose, Fast-Flo Lactose, Hydrous Lecithin Ludipress Magnesium Carbonate, Pentahydrate Magnesium Stearate Magnesium Sulfate, Anhydrous DL-Malic Acid Maltitol, MR-20 Maltodextrin, M040 Maltodextrin, M050 Maltodextrin, M100 Maltodextrin, M150 Maltodextrin, M180 Maltol Mannitol, Granular Mannitol, Granular USP 2080 Mannitol, Parenteral Mannitol, Power Meglumine Menthol Methacrylic Acid Copolymer-Methanol Methyl Salicylate Methylcellulose, A4C PREM Methylcellulose, A4M PREM Methylcellulose, A15C PREM Methylcellulose, A15LV PREM Methylparaben Mineral Oil Mineral Oil, Light Monoammonium Glycyrrhizinate, 100 Monoammonium Glycyrrhizinate, 110 Monoammonium Glycyrrhizinate, 180 Monoethanolamine Monothioglycerol Octanoic Acid, Sodium Salt Oleyl Alcohol, NF Opadry, YS-1-2546 Opadry II, Y-22-7719 Opadry Blue, OY-6529 Opadry White, OY-7300 Opadry White, YS-1-7003 Orange Mandarin Orange Terpeneless Paraffin, Flakes Peanut Oil Petrolatum Phenol Poloxamer, 188 Poloxamer, 407 Polyethylene Glycol, 300 NF Polyethylene Glycol, 1000 NF, FCC Polyethylene Glycol, 540 Blend, NF Polyethylene Glycol, 3350 Flake, NF Polyethylene Glycol, 8000 Powder NF, FCC Polyethylene Glycol, Compound 20 M Flake FCC Polyethylene Glycol 8 Caprylic/Capric Glycerides Polyethylene Glycol, 660 12-Hydroxystearate, HS 15 Polyethylene Glycol, 10 Oleyl Ether Polyethylene Oxide, 205 Polyethylene Oxide, 1105 Polyethylene Oxide, N-80 Polyethylene Oxide, N-750 Polyethylene Oxide, N-60000 Polyethylene Oxide, Coagulant Polyglyceryl Oleate, FCC Polyoxyl 35 Castor Oil Polyoxyl 40 Stearate Polysorbate, 20 Polysorbate, 80 Polyvinyl Alcohol, Hydrolyzed Potassium Carbonate Potassium Citrate Potassium Metabisulfite Potassium Phosphate, Monobasic Potassium Sodium Tartrate, Tetrahydrate Potassium Sorbate Povidone Propionic Acid Propylene Carbonate Propylene Glycol Propylene Glycol Laurate, FCC Propylparaben Pyridine Riboflavin Saccharin Saccharin Sodium, Dihydrate Safflower Oil Saturated Polyglycolyzed Glycerides, 44/14 Saturated Polyglycolyzed Glycerides, 50/13 Saturated Polyglycolyzed Glycerides, 53/10 Silicon Dioxide, Colloidal Simethicone, Emulsion LS USP Simethicone, Emulson USP Simethicone, GS Simethicone, USP Sodium Acetate, Anhydrous Sodium Alginate Sodium Ascorbate Sodium Benzoate Sodium Bicarbonate Sodium Borate Sodium Carbonate Sodium Citrate, Dihydrate Sodium Cyclamate Sodium Lauryl Sulfate Sodium Metabisulfite Sodium Phosphate Dibasic, Anhydrous Sodium Phosphate Monobasic, Anhydrous Sodium Propionate, Anhydrous Sodium Starch Glycolate Sodium Stearate Sodium Stearyl Fumarate Sodium Sulfate, Anhydrous Sodium Sulfite Sorbic Acid Sorbitan Monopalmitate Sorbitan Monostearate Sorbitan Trioleate Sorbitan Tristearate Sorbitol Soybean Oil Starch, Fully Pregelatinized 1551 Starch, Partially Pregelatinized 1500 Starch, Partially Pregelatinized 1500LM Stearic Acid Stearyl Alcohol Succinic Acid Sucrose Sucrose Octaacetate Sugar, Confectioner's Sulfanilamide Talc DL-Tartaric Acid Thimerosal Thymol Titanium Dioxide Triacetin Tributyl Citrate Triethanolamine Triethyl Citrate Triton, X-100 Urea Vanillin Vegetable Oil, Hydrogenated Type I Vinyl Acetate Crotonic Acid Copolymer Vinylpyrrolidone-Vinyl Acetate Copolymer, VA64 Water, Purified Wax, Carnauba Wax, Emulsifying Wheat Germ Oil Appendix A: Summary of Characteristic Raman and Infrared Frequencies Appendix B: Representative Chemical Shift Values for NMR Spectroscopy Chemical Abstracts Service Index

Preparation for external use for skin

Abstract: PROBLEM TO BE SOLVED: To provide a preparation for external use for skin, showing excellent characteristics for use, e.g. softness, smoothness and extendability; containing a clay mineral as the base, and showing no temporal discoloration (turning brown) even when containing a clay mineral as the base together with resorcin. SOLUTION: This preparation for external use for skin contains a clay mineral, water and a sulfite, and is kept at pH 5 or less. The clay mineral to be incorporated in the preparation is not limited so long as it swells to form gel when mixed with water and can be incorporated in the preparation. Some examples of the clay minerals include montmorillonite (e.g. Beagum and Kunipia (trade names of montmorillonite)), hectorite (e.g. Raponite (trade name of hectorite)), sericite, kaolin, mica and synthetic mica (e.g. Dimonite (trade name of synthetic mica)). The sulfite to be incorporated in the preparation includes sodium sulfite, potassium sulfite, sodium hydrogen sulfite, potassium hydrogen sulfite, sodium pyrosulfite and potassium pyrosulfite.

Ionic cellulose derivatives: synthesis of sodium 6-deoxycellulose-6-sulfonate with high degree of substitution

Abstract: The Strecker synthesis of sodium 6-deoxycellulose-6-sulfonate (Cell-sulfo) was carried out using 6-bromo-6-deoxycellulose (degree of bromine substitution, about 0.9) in saturated aqueous solutions of sodium sulfite, sodium hydrogen sulfite and their mixture under reflux and at 70°C. The structure of Cell-sulfo was confirmed with 1 H and 13 C NMR spectroscopic analyses. Samples obtained were soluble in water over a wide pH range and the highest degree of sulfonate substitution exceeded 0.8 under optimum conditions; 6-bromo-6-deoxyglucose repeating units of Cell-Br were converted selectively to 6-deoxyglucose-6-sulfonate repeating units of Cell-sulfo with the conversion higher than 90% under neutral conditions in the mixture solution. In the saturated sodium sulfite solution, the reaction was fast but sulfonate groups formed were partly lost at longer reaction periods. Under reflux conditions in the saturated sodium hydrogen sulfite solution, the reaction rate was close to that observed for the reaction in the mixture solution. However, the reaction was slow at 70°C and the conversion to the Cell-sulfo repeating units was around 10%.

Manufacture of iodine-based polarizing film

Abstract: PROBLEM TO BE SOLVED: To provide an iodine-based polarizing film having high contrast by immersion-treating a PVA film in boric-acid containing aqueous solution with continuously pouring a sulfite into the boric-acid containing aqueous when the PVA film is immersion-treated. SOLUTION: A sulfite is added continuously or intermittently into boric-acid containing aqueous solution for immersion treatment. For composition of this boric-acid containing aqueous solution, weight ratio of water: boric acid: potassium iodine is usually about 100: (2-15):(2-20), preferably 100: (5-12):(5-15). Temperature of the boric-acid containing aqueous solution, for example 50 deg.C, preferably, a range from 50 deg.C to 85 deg.C. In this case, as sulfite added to the boric-acid containing aqueous solution, for example, sulfite metal salt such as potassium sulfite or sodium sulfite is used. As a PVA film, a film produced from PVA having about 1,000-10,000 polymerization degree, preferably 1,500-5,000 is used.

TETRA-n-BUTYLAMMONIUM BROMIDE HYDRATE-BASED HEAT STORAGE MATERIAL

Abstract: PROBLEM TO BE SOLVED: To obtain a tetra-n-butylammonium bromide hydrate slurry-based heat storage material reduced in corrosivity. SOLUTION: This tetra-n-butylammonium bromide hydrate-based heat storage material is characterized by comprising at least one kind of a corrosion inhibitor selected from the group composed of sodium nitrite, sodium sulfite, sodium pyrophosphate and a benzoiriazole in an aqueous solution comprising tetra-n- butylammonium bromide as a main ingredient. COPYRIGHT: (C)2001,JPO

Stabilizing method of human-hemoglobin in solution and stabilizing solution

Abstract: PROBLEM TO BE SOLVED: To restrain degeneration and decomposition of human hemoglobin in solution to more correctly measure the concentration by coexisting one sort or two or more sorts of substances selected from sulfurous acid or its salt, iodine ion, pyruvic acid or its salt, or oxalacetic acid or its salt. SOLUTION: For stabilized human-hemoglobin, it is human-hemoglobin contained in urine or human-hemoglobin prepared from red blood cell. The quantity used for stabilization is desirable to be 0.0001-0.5% as sodium sulfite, for example in sulfurous acid or its salt. Further for pH of the solution, pH 4.5-9.0 is desirable, and for maintaining pH, suitable buffering agent such as phosphoric acid buffering liquid or the like can be utilized. It is desirable that the solution contains sodium azide, albumin, or boric acid, otherwise it can contain inorganic salts such as sodium chloride, sugars, amino acid, chelate agent, or the like.

Immunoassay, method for eliminating immunoreactive interference substance, and reagent for measuring it

Abstract: PROBLEM TO BE SOLVED: To sufficiently suppress interference operation even if an interference sub stance is contained in a specimen to be measured with high concentration by performing an antigen/antibody reaction under the presence of low-class oxygen acid salt and/or a transition metal SOLUTION: A low-class oxygen acid salt is selected from sulfite, hyposulfite, phosphite, and the like for use, and especially sodium sulfite is preferable and approximately 1-1000 mM concentration is contained At concentration that is less than 1-1000 mM, no interference substance for immunoreaction can be suppressed On the other hand, at concentration that is equal to or more than 1-1000 mM, solution viscosity becomes high, thus poorly affecting a measurement value A transition metal is selected from copper, nickel, cobalt, and the like, especially nickel acetate is preferable and the transition metal is contained by approximately 01-100 mM At a concentration that is less than 01-100 mM, rheumatism factors and heterophil antibodies cannot be suppressed On the other hand, at a concentration that is equal to or more than 01-100 mM, a measurement value is poorly affected By suppressing the protein protection agent of inactive protein such as albumin and gelatin as needed, the stabilization effect of a substance to be measured can be improved

Hydrochloric Acid Leaching of Cobalt-Rich Ferromanganese Crust using Hydrogen Peroxide and Sodium Sulfite as Reducing Agents.

Abstract: Hydrochloric acid leaching of Co, Ni, Cu, Mn and Fe from the cobalt-rich ferromanganese crust under reducing conditions was performed using hydrogen peroxide and sodium sulfite as reducing agents. Hydrochloric acid concentration more than 3.0 mol/dm3 is required to obtain the high extraction of Co and Ni without reducing agents at ambient temperature. The high extraction of Cu in dilute hydrochloric acid solution without reducing agents at ammbient temperature explains the different form of Cu from other metals present in cobalt-rich ferromanganese crusts. When hydrogen peroxide or sodium sulfite was used as reducing agent, the high extraction of Co and Ni was obtained with dilute hydrochloric acid at ambient temperature. In particular, hydrogen peroxide extracts metals in stoichiometric amounts. The extraction of Ni depends significantly on the leaching temperature, regardless of the presence or absence of reducing agents.

Method of removing fine particles

Abstract: PROBLEM TO BE SOLVED: To contrive improving the surface cleaning degree required for a material to be washed by contacting reducing water that a reducing chemical is added to water with the material to be washed to removed fine particles from the surface of the material to be washed. SOLUTION: Reducing water obtained by that a reducing agent using any one of hyposulfite such as sodium hyposulfite and ammonium hyposulfite, sulfite such as sodium sulfite and ammonium sulfite, and hydrogensulfite such as sodium hydrogensulfite and ammonium hydrogensulfite is added to water is brought into contact with a material to be washed to remove fine particles from the surface of the material to be washed. At this time, when the reducing water is brought into contact with the material to be washed, physical action such as ultrasonic waves is also used to heighten the elimination effect of the fine particles from the surface of the material to be washed. In this way, the surface cleaning degree required for the material to be washed can be improved.

Method of electrolytic texturing and electrolytic liquid slurry

Abstract: An electrolytic liquid slurry containing pure water, abrading particles and nitric acid, boric acid, alkanol amine, sodium sulfite, sodium chloride, ammonium chloride, sodium phosphate, potassium phosphate, sodium silicate, aluminum phosphate, ammonium phosphate, diethanolamide borate, amine borate, sodium metaborate, propylene glycol or their liquid mixture is supplied to the surface of a magnetic hard disk substrate or the surface of a tape. The tape is pressed against the surface of the disk substrate and a voltage difference is applied between an electrode disposed in contact with the electrolytic liquid slurry and the disk substrate which serves as another electrode. Since texturing and electrolytic processes are thus carried out simultaneously, the stock removal can be increased and the throughput can be improved.

Waste gas desulfurization and device therefor

Abstract: PROBLEM TO BE SOLVED: To reduce equipment cost and running cost by using a circulated sodium component as an absorbent in a waste gas desulfurizing system and finally recovering the absorbed sulfur oxides as sulfuric acid. SOLUTION: The waste gas contg. sulfur oxides is brought into contact with a liq. absorbent with sodium hydroxide as the absorbent to absorb the sulfur oxides in the absorbent in an absorption equipment 2. The solid component in the absorbent extracted from the equipment 2 and contg. sodium sulfite is separated by a solid-liq. separation means 7. The sodium sulfite in the separated liq. from the separation means 7 is oxidized to sodium sulfate by an oxidation means. The liq. contg. sodium sulfate from the oxidation means is electrolyzed and separated into sodium hydroxide and sulfuric acid by an electrolytic means 16. The sodium hydroxide obtained by the electrolytic means 16 is returned to the absorption equipment as the absorbent by a return means 22 and (3). The sodium sulfate-contg. liq. from the oxidation means 8 is admixed with a part of the sufuric acid obtained by the electrolytic means 8 and supplied to the electrolytic means 8 through a pH control means 9 for controlling the pH of the sodium sulfate-contg. liq. to be supplied to the electrolytic means 8.

Manufacture of wooden material

Abstract: PROBLEM TO BE SOLVED: To prevent a metal from being corroded due to a formaldehyde scavenger and realize the lowering of the diffusion of a formaldehyde by a method wherein a mixture of a urea and a sulfite, the mixing ratio of the urea/sulfite of which is a specified solid content weight ratio, is applied to a wooden material. SOLUTION: As an adhesive, a formaldehyde-based resin adhesive such as a urea-formaldehyde resin or the like is employed for manufacturing a plywood. This, polywood, the mixed aqueous solution of the urea and the sulfite as a formaldehyde scavenger is applied. In this case, the urea and the sulfite are mixed in the mixing ratio of the urea/sulfite ratio in solid content weight ratio lies within the range of 9/1-2/8. Further, as the sulfite, a sodium sulfite or a potassium sulfite is employed. Furthermore, the concentration of the formaldehyde scavenger aqueous solution is set to be 5-30 wt.%, for example. Thus, a metal can be prevented from being corroded though the excellent scavenger properties are held as they are.

Paper-dimensional stabilizer and dimensional stabilization

Abstract: PROBLEM TO BE SOLVED: To obtain a stabilizer for paper-dimension stabilization which lessens paper expansion and contraction due to difference of water absorption by including a dimension-stabilizing compound having a modified structure with formaldehyde and a formaldehyde scavenger. SOLUTION: This paper dimension stabilizer includes a dimension-stabilizing compound having a modified structure with formaldehyde such as N- methylolguanidines, methylolureas, N,N'-dimethylol-2-imidazolidinones, N,N'- dimethylol-4,5-dihydroxy-2-imidazolidinones, N-hydroxymethylcarbamoylamines, N-metylol melamines or N-methylolacrylamide-based polymers and a formaldehyde scavenger such as ureas, glycols, hydrazides, amines, dicyandiamide or sodium sulfite.

Primeverose containing solid soap

Abstract: PROBLEM TO BE SOLVED: To obtain a soap which is hard to discolor for a long time to damage color, transparency, etc., by comprising one or more components selected from the group consisting of primeverose and its derivs. SOLUTION: This is a soap comprising 0.01-10 wt.% of one or more members selected from the group consisting of a primeverose and its derivs. such as an acylated member, an alkylated member and a sulfated member, a salt of fatty acid such as a coconut oil fatty acid, an alcohol such as glycerin, a hydrocarbon such as squalane, a chelating agent such as an edetate, an antioxidant such as sodium sulfite, an antiseptic agent such as a parabene, an org. or inorg. coloring agent, an ultraviolet light absorbing agent etc. Particularly, a transparent soap is obtd, by maintaining the amt. of an alkali to be added as having the molar ratio of sodium hydroxide/org. amine such as triethanolamine in the range of 1/0.8-1/2 and the total amt. of sodium hydroxide and org. amine at a saponification equivalent of 2-3. The primeverose is a disaccharide in which position 1 of a xylose is combined to position 6 of a D-glucopyranose by the ethereal bonding.

Immobilization of SH group-containing compounds in the presence of a sulfite-containing antioxidant

Abstract: Immobilization of SH group-containing compounds on a solvent-insoluble support is carried out in the presence of an antioxidant to prevent oxidation of SH groups to S—S bonds. This improves immobilization efficiency and suppresses deterioration of inherent characteristics of the SH group-containing compound. Antioxidants include sodium pyrosulfite (sodium disulfite), sodium sulfite, sodium hydrogensulfite, sodium hydrosulfite and L-ascorbic acid. SH group-containing compounds include cysteine, peptides or proteins containing cysteine and thiol compounds such as ethanethiol, aminoethanethiol, benzylthiol and thiophenol. Preferably, the SH group-containing compound has a molecular weight not more than 3×10 4 . The support may be activated by a functional group such as glycidyl, imidocarbonato, tosyl, tresyl, carboxyl, amino, azido or hydroxyl. The support can be inorganic such as glass beads or organic such as a synthetic polymer or a polysaccharide.

Detergent for contact lens

Abstract: PROBLEM TO BE SOLVED: To obtain the subject contact lens detergent that can cleanse eye discharge and the like sticking to contact lenses after long-term application, can do suitable lens care and can be conveniently and safely used by using a combination of a protease, a nonionic surfactant and a sulfurous salt. SOLUTION: This contact lens detergent contains (A) a protease as originating from Penicillium, (B) a nonionic surfactant and (C) a sulfurous salt and, in a preferred embodiment, the content of the component A is 0.1-10 wt.%, the component B is 1-30 wt. % and the component C is 1-30 wt.%. The component B is preferably solid at ambient temperature, particularly polyethylene glycol fatty acid ester and/or polyoxyethylene-oxypropylene block copolymer are preferred. The component C is preferably selected from sodium sulfite and/or sodium hydrogen sulfite. The objective detergent is prepared in the form of usual powder or granules or other solid forms and it is dissolved in water or physiological salt solution before it is used.

Specifics of synthesis of soluble glass using sodium sulfate

Abstract: Soluble glass is synthesized using sodium sulfate. Decorative glass ceramic materials are made on its basis. This paper considers the results of x-ray phase analysis and thermodynamic calculations of the redox reactions of sodium sulfite formation, as well as data on physicomechanical and color testing of the produced composite materials.

Skin Lightening compsns.

Abstract: Disclosed is a skin lightening cosmetic composition comprising; a safe and effective amount of at least one water-soluble reducing agent selected from the group consisting of sodium sulfite, potassium sulfite, sodium hydrogen sulfite, potassium hydrogen sulfite, sodium metabisulfite, potassium metabisulfite, ammonium sulfite, ammonium hydrogen sulfite, formic acid, oxalic acid and mixtures thereof and, cosmetically acceptable carrier for the water-soluble reducing agent wherein the composition is substantially free of hydroquinone or its derivatives. Also disclosed is a method for skin lightening in mammals comprising topically applying to the skin said skin lightening cosmetic composition.

Method of preparing a preparation "phytosporin"

Abstract: FIELD: microbiology, biotechnology SUBSTANCE: bacteria are cultured at 35-37 C for 40-50 h at continuous aeration, at medium saturation with oxygen (60-70%) and at stirring at the rate of mixer rotation 250-300 rev/min Liquid nutrient medium of the following composition is used: enzymatic peptone, magnesium sulfate, potassium dihydrogen phosphate, sodium citrate, copper sulfate, zinc sulfate, iron sulfate, calcium chloride, manganese sulfate, glucose and water Sowing is carried out with mother exponential culture at amount (1-3) x 10 cells/ml Culturing is carried out for 8-11 h up to the first spores appearance One-half of cultural fluid of volume reactor is poured out and the same volume of fresh nutrient medium is added Culturing is continued up to recovery of cell content Then one-half of cultural fluid of volume reactor is poured out again and the same volume of fresh nutrient medium is added Then the end product is mixed with biomass stabilizing agent: humin 05-2% or sodium sulfite 2-6% After 10 removal-addition cycles for 40-50 h it is possible to obtain 350-400 l cultural fluid at cell concentration 22-24 billion cells/ml Cultural fluid containing spore biomass, for example, of the strain B subtilis-26 and biomass stabilizing agent are used as a bacterial preparation "Phytosporin" in a liquid form EFFECT: increased output of method, prolonged storage time without lyophilization of a preparation 1 tbl, 3 ex

Effects of Cyclodextrins on Fading of Azo Dyes with Sodium Sulfite

Abstract: Effects of cyclodextrins (CyD) on fading of various azo dyes such as 1-arylazo-2-naphthols, 1-arylazo-4-naphthols, and 2-arylazo-1-naphthols with sodium sulfite at 30°C were investigated. Fading was found to occur as a result of adding of sulfite to a conjugate enone moiety (C-addition) or to a conjugate iminone moiety (N-addition) in the hydrozone tautomer. In the case of C-addition mainly conducted for 1-arylazonaphthols, the addition of β-CyD lessened the rate of fading through formation of an inclusion complex at the naphthol site of the dye. α-CyD had only limited effect on the fading rate since the cavity was too small to permit dye inclusion. Inclusion complexes were confirmed by vis-spectral change in the dyes subsequent to the addition of CyD. α-CyD caused remarkable retardation of fading for 2-arylazo-1-naphthols following N-addition. Inclusion of the dyes at the aryl site that would promote complexation was considered as explanation for this. β-CyD acted as an efficient retarding agent in the N-addition process. Retarding efficiency of fading due to CyD is discussed based on substituent effects, disposition of dyes in CyD cavities, reaction sites of the dyes, and the binding constant (Ka).

Discoloration-preventive glyphosate-combined solution

Abstract: PROBLEM TO BE SOLVED: To obtain the subject combination solution effectively and conveniently prevented from discoloration by adding a discoloration inhibitor containing a specific organic or inorganic compound into a combination solution consisting of glyphosate and endothal SOLUTION: This combination solution is obtained by adding a discoloration inhibitor containing one or more than two kinds of compounds selected from urea, sodium sulfite, sodium hydrogensulfite, sodium pyrosulfite, potassium pyrosulfite, hydroxylamine hydrosulfate and thiourea dioxide in an equimolar amount or less (preferably 001-10 ptwt of urea per 100 ptswt of the solution) based on glyphosate into a combination solution (endothal or its salt is formulated in an amount of 005-50 ptswt preferably 01-10 ptswt, based on 1 ptwt of glyphosate or its salt) containing 005-90 ptswt, preferably 05-80 ptswt, of glyphosate and endothal or their salts (preferably sodium salt) in 100 ptswt of the combination solution