Topic
Color reaction
About: Color reaction is a research topic. Over the lifetime, 1194 publications have been published within this topic receiving 19579 citations.
Papers published on a yearly basis
Papers
More filters
Patent•
15 May 1987
TL;DR: In this article, a process for encapsulating solutions of reactants of color reaction systems by means of conventional encapsulation processes, the reactant initially being dissolved in a solvent with a good dissolving power and immediately prior to emulsification or encapsulation, is admixed with the fresh solution obtained in a quantity which adjusts a supersaturated system, the capsules obtainable as a result thereof, as well as their use with an encapsulated solution of a basic color former, which supplies a color by the reaction with acid reactants, in non-carbon paper.
Abstract: The invention relates to a process for encapsulating solutions of reactants of color reaction systems by means of conventional encapsulation processes, the reactant initially being dissolved in a solvent with a good dissolving power and immediately prior to emulsification or encapsulation, a non-solvent, which only dissolves the reactant to an insignificant extent, is admixed with the fresh solution obtained in a quantity which adjusts a supersaturated system, the capsules obtainable as a result thereof, as well as their use with an encapsulated solution of a basic color former, which supplies a color by the reaction with acid reactants, in non-carbon paper.
2 citations
Patent•
19 Jul 1988
TL;DR: A strain such as Pseudomonas fluorescens biovar V (NJ-50A) (FERM P-9102), etc., is cultivated preferably at pH5-8 at 25-35 deg.C for 2-6 days as mentioned in this paper.
Abstract: NEW MATERIAL:Antibiotic RKO721 having the following properties. Molecular weight: 1216 (by mass spectrum). Melting point: not showing clear melting point, slightly browning at about 209-220 deg.C. specific rotatory power: [alpha]D =+3.0 (C=0.1, 50% pyridine water). Slightly acidic. White asbesto-like powder (lyophilized from 50% pyridine water). Color reaction: positive in ninhydrin and alpha-naphthol reaction and negative in Sakaguchi reaction. Soluble in pyridine, dimethyl sulfoxide, 1N-NaOH aqueous solution, 50% isopropanol aqueous solution and 50% pyridine aqueous solution, slightly soluble in 1N-acetic acid aqueous solution and methanol and insoluble water, isopropanol, chloroform and acetone. USE:An antifungal agent. PREPARATION:A strain such as Pseudomonas fluorescens biovar V (NJ-50A) (FERM P-9102), etc., is cultivated preferably at pH5-8 at 25-35 deg.C for 2-6 days.
2 citations
TL;DR: By using TBPE as ion-pairing counter-ion whose absorption spectrum differs markedly from that of the resulting ion-pairs, ion pair high pressure liquid chromatographic determination of many organic bases was carried out sensitively without the absorptive background of TBPE added in the mobile phase as mentioned in this paper.
Abstract: By using TBPE as ion-pairing counter-ion whose absorption spectrum differs markedly from that of the resulting ion-pairs, ion pair high pressure liquid chromatographic determination of many organic bases was carried out sensitively without the absorptive background of TBPE added in the mobile phase.
2 citations
Patent•
14 Nov 1978
TL;DR: In this paper, Antibiotic aculeacin DUPSILON Characteristics thereof are as follows: elementary analysis, C 5755, H 832, N 894, molecular weight by the Rast method, 1265; mp 159-162 degC; specific rotation [alpha] D =-465 deg(C 025, methanol); color reaction: positive to Pauly's reaction, etc, quasi positive to Molisch's reaction etc, negative to ninhydrin reaction, and soluble in lower alcohols, slightly soluble in ethyl acetate
Abstract: PURPOSE:Antibiotic aculeacin DUPSILON Characteristics thereof are as follows: elementary analysis, C 5755%, H 832%, N 894%, molecular weight by the Rast method, 1265; mp 159-162 degC; specific rotation [alpha] D =-465 deg(C 025, methanol); color reaction: positive to Pauly's reaction, etc, quasi positive to Molisch's reaction etc, negative to ninhydrin reaction, etc; soluble in lower alcohols, slightly soluble in ethyl acetate, hardly soluble in acetone, etc; white neutral substance; UV absorption spectrum shows a peak at 278nm; etc
2 citations