Showing papers on "Sodium sulfide published in 1969"
TL;DR: Pretreatment of mice with cobaltous chloride protects them against a potentially lethal dose of sodium cyanide or sodium sulfide, and cobaltinitrite blocks methylene blue stimulation of methemoglobin reductase activity in concentrations that do not produce excessive hemolysis.
32 citations
TL;DR: In this paper, the same authors used 10 widemouth glass-stoppered jars of 1 liter capacity to detect hydrogen sulfide in distilled water, containing sufficient sulfuric acid to lower the pH to about 4.
Abstract: tration at which the odor of hydrogen sulfide in water can be detected, the following technique was used. Ten wide-mouth glass-stoppered jars of 1 -liter capacity were partly filled with 800 ml of odor-free distilled water, containing sufficient sulfuric acid to lower the pH to about 4. The temperature of the water was about 25 °C. To five of these jars, equal quantities of a dilute sodium sulfide solution of
14 citations
Patent•
29 Jul 1969TL;DR: In this paper, the authors describe the preparation of a 3-AMINOPYRAZINOYL 3-HYDROXY and 3-MERCAPTO-PYAZINOATES and CORRESPONDING ETHERS and THIOETHERS ARTE.
Abstract: LOWER ALKYL 3-HYDROXY- AND 3-MERCAPTO-PYAZINOATES AND CORRESPONDING ETHERS AND THIOETHERS ARTE PREPARED BY DIAZOTIZATION OF LOWER ALKYL 3-AMINOPYRAZINOATES FOLLOWED BY TREATMENT WITH WATER TO GIVE THE 3-HYDROXY COMPOUNDS, OR AN ALCOHOL TO GIVE THE 3-ETHER COMPOUNDS AND WITH BROMINE AND HYDROGEN BROMIDE TO GIVE THE 3-BROMO COMPOUNDS. THE LATTER COMPOUNDS ARE THEN CONVERTED INTO THE 3/MERCAPTO COMPOUNDS BY TREATMENT WITH SODIUM SULFIDE AND SULFUR OR INTO THE 3-THIO-ETHERS BY TREATMENT WITH AN ALKALI METAL MERCAPTIDE, THE COMPOUND ARE USEFUL AS INTERMEDIATES FOR THE PREPARATION OF THE CORRESPONDING PYRAZINOYLGUANIDINES WHICH HAVE UTILITY AS DIURETIC AND SALURETIC COMPOUNDS.
10 citations
TL;DR: In this article, a normal coordinate vibrational analysis has been performed based on a non-linear four-atom model having SS bond lengths = 2.04 A, S ǫ s bond angles = 105°, and the Sǫ S dihedral angle = 90°.
9 citations
Patent•
18 Sep 1969
TL;DR: In this paper, ground particles of a spent pulping smelt are treated in a fluidized bed reactor in intimate contact with moving air enriched with steam for about 10 seconds to 2 hours, wherein the weight ratio of steam to air ranges from about 0.2 to 1 to 1.
Abstract: Process for simultaneously producing sulfite pulping chemical from a spent pulping medium by the exothermic oxidative conversion of sodium sulfide to sodium sulfite and for the control of the temperature in exothermic reaction and also for employing the exothermic reaction heat to make steam to be mixed with air for use in said oxidation process. Ground particles of a spent pulping smelt are treated in a fluidized bed reactor in intimate contact with moving air enriched with steam for about 10 seconds to 2 hours, wherein the weight ratio of steam to air ranges from about 0.2 to 1 to 1.2 to 1. The temperature in the reactor is adiabatically controlled and the heat of reaction generated in the reactor is absorbed by adiabatic cooling to form the steam used in the reactor.
9 citations
TL;DR: In this paper, the benzoate and acetate esters of 3-(2-hydroxyethyl)-2-benzothiazolinethione (Ik) gave the corresponding thiones.
8 citations
Patent•
28 Oct 1969
TL;DR: In this paper, a process for converting SODIUM SULFIDE in the SMELT is described, which is based on the BURNING of black LIQUOR DIGESTERS of SEMICHEMICAL PULP and SULFERITE PULEP by OXIDATION and RECOVERing the LATTER as pULP Diggesting CHEMICAL.
Abstract: A PROCESS FOR CONVERTING SODIUM SULFIDE IN THE SMELT RESULTED FROM THE BURNING OF BLACK LIQUOR DIGESTERS OF SEMICHEMICAL PULP AND SULFITE PULP TO SODIUM SULFITE BY OXIDATION AND RECOVERING THE LATTER AS PULP DIGESTING CHEMICAL, WHICH COMPRISES MIXING THE SMELT PARTICLES WITH WATER, ADDING THERETO A MINOR AMOUNT OF SODIUM HYDROXIDE FORMING THE MIXTURE INTO PARTICLES AND INTRODUCING THE PARTICLES INTO A CONVERTER PACKED WITH DRY POWDER OF SODIUM SULFITE, SODIUM CARBONATE, ETC. CONTAINING NO SODI- UM SULFIDE, THE PROCESS BEING PERFORMED THROUGHOUT AS A WET PROCESS.
6 citations
Patent•
10 Nov 1969TL;DR: In this article, a controlled process of producing sulfite pulps from wood and other cellulosic material is described, where the use of sodium sulfide is avoided and the process pH, i.e., the pH in situ or the so-called hot pH, is measured during the pulping or cooking operation and the alkalinity of the cooking medium is adjusted in response to such measurement in a predetermined manner.
Abstract: A controlled process of producing sulfite pulps from wood and other cellulosic material wherein the use of sodium sulfide is avoided and the process pH, i.e., the pH in situ or the so-called hot pH, is measured during the pulping or cooking operation and the alkalinity of the cooking medium is adjusted in response to such measurement in a predetermined manner.
4 citations
2 citations