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CAS No 68-11-1 , 2-sulfanylacetic acid

  • Name: 2-sulfanylacetic acid
  • Synonyms: 2-sulfanylacetic acid; Sulfanylacetic acid; 2-Mercaptoacetic acid; Acetic acid;mercaptoacetic acid; 2-Thioglycolic acid; thioglycolic acid; thioglycolate; 68-11-1; mercapto-;
  • CAS Registry Number:
  • Transport: UN 1940/2436
  • Melting Point: -16 ºC
  • Flash Point: 126 ºC
  • Boiling Point: 96 ºC (5 MMHG)
  • Density: 1.325
  • Refractive index: 1.503-1.505
  • Safety Statements: R24/25;R26;R34
  • Hazard Symbols: T+: Very toxic;
  • HS Code: 29309070
  • Flash Point: 126 ºC
  • EINECS: 200-677-4
  • Molecular Weight: 92.11696
  • InChI: InChI=1S/C2H4O2S/c3-2(4)1-5/h5H,1H2,(H,3,4)
  • Risk Statements: S23;S25;S27;S28C;S36/37;S45
  • Molecular Formula: C2H4O2S
  • Molecular Structure:CAS No:68-11-1 2-sulfanylacetic acid
References of 2-sulfanylacetic acid
Title: Thioglycolic Acid
CAS Registry Number: 68-11-1
CAS Name: Mercaptoacetic acid
Synonyms: thioglycollic acid
Molecular Formula: C2H4O2S
Molecular Weight: 92.12
Percent Composition: C 26.08%, H 4.38%, O 34.74%, S 34.81%
Line Formula: HSCH2COOH
Literature References: Prepd by the action of sodium sulfhydrate on sodium chloroacetate; by electrolysis of dithioglycollic acid (from sodium sulfide and sodium chloroacetate). Toxicity study: Deichmann, Mergard, J. Ind. Hyg. Toxicol. 30, 373 (1948).
Properties: Liquid, strong, unpleasant odor. Readily oxidized by air. d 1.325. mp -16.5°. bp29 123°. bp15 108°. bp5 96°. K1 at 25° = 2.1 ′ 10-4; K2 = 2.1 ′ 10-11. Miscible with water, alcohol, ether, chloroform, benzene, and many other organic solvents. LD50 orally in rats: 0.15 ml/kg (Deichmann, Mergard).
Melting point: mp -16.5°
Boiling point: bp29 123°; bp15 108°; bp5 96°
Density: d 1.325
Toxicity data: LD50 orally in rats: 0.15 ml/kg (Deichmann, Mergard)
CAUTION: Potential symptoms of overexposure are irritation of eyes, skin, nose, throat; lacrimation, corneal damage; skin burns, blisters. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 306.
Use: Sensitive reagent for iron, molybdenum, silver, tin. With ferric iron a blue color appears, and when an alkali hydroxide is added to a soln contg ferrous salts and thioglycolic acid, a yellow precipitate forms. Used in the manuf of thioglycolates. The ammonium and sodium salts are commonly used for cold waving and the calcium salt is a depilatory. The sodium salt also is used in bacteriology in the prepn of thioglycolate media.