78286-02-9

Basic information

• Product Name: ammonium 2,3-dimercaptopropanesulphonate
• Synonyms: ammonium 2,3-dimercaptopropanesulphonate;2,3-Dimercapto-1-propanesulfonic acid ammonium salt;Ammonium 2,3-dimercaptopropanesulfonate
• CAS NO: 78286-02-9
• Molecular Formula: C₃H₇O₃S₃*H₄N
• Molecular Weight: 205.31934
• EINECS: 278-888-6
• Mol File: 78286-02-9.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 433.8°C at 760 mmHg
• Flash Point: 216.2°C
• Appearance: /
• Vapor Pressure: 9.69E-09mmHg at 25°C
• CAS DataBase Reference: ammonium 2,3-dimercaptopropanesulphonate(CAS DataBase Reference)
• NIST Chemistry Reference: ammonium 2,3-dimercaptopropanesulphonate(78286-02-9)
• EPA Substance Registry System: ammonium 2,3-dimercaptopropanesulphonate(78286-02-9)

Safety Data

• Hazardous Substances Data: 78286-02-9(Hazardous Substances Data)

Usage

InChI:InChI=1/C3H8O3S3.H3N/c4-9(5,6)2-3(8)1-7;/h3,7-8H,1-2H2,(H,4,5,6);1H3

Relevant articles and documents

Process for production of 2,3-dimercaptopropane-1-sulfonic acid and its salts

A process for producing 2,3-dimercaptopropane-1-sulfonic acid or its salts useful as an antidote to toxic metal salt poisoning comprising reacting an allyl bromide with sodium sulfite in aqueous medium at a temperature from 50 to 100 degrees C. to produce sodium-2-propene-1-sulfonate, brominating the 2-propene-1-sulfonate, eliminating excess bromine by adding sodium sulfite, adjusting the Ph to 4.5 with sodium hydroxide, reacting the brominated compound with sodium hydrogen sulfide in an alkaline medium to produce sodium-2,3-dimercaptopropane-1-sulfonate, precipitating the raw product as a lead salt or mercury, cadmium, tin, copper, nickel, cobalt or zinc complex, suspending the precipitated product in methanol and reacting it with gaseous hydrogen sulfide, adjusting the Ph of the solution with a solid bicarbonate selected from the group consisting of sodium bicarbonate, ammonium bicarbonate and potassium bicarbonate to a Ph of 4.5, filtering out precipitated metal sulfides, isolating the raw product by evaporating the filtrate to dryness, and recrystallizing the raw product in a 90% solution of ethanol or isopropanol.