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A7949812

Thiolactic Acid , >97.0%(GC) , 79-42-5

Synonym(s):
2-Mercaptopropionic acid;Thiolactic acid

CAS NO.:79-42-5

Empirical Formula: C3H6O2S

Molecular Weight: 106.14

MDL number: MFCD00004862

EINECS: 201-206-5

Update time: 2022-07-08

PRODUCT Properties

Melting point: 10-14 °C (lit.)
Boiling point: 102 °C/16 mmHg (lit.) 203-208 °C (lit.)
Density  1.196 g/mL at 25 °C (lit.)
vapor pressure  1.7 hPa (20 °C)
FEMA  3180 | 2-MERCAPTOPROPIONIC ACID
refractive index  n20/D 1.481(lit.)
Flash point: 190 °F
storage temp.  2-8°C
solubility  1g/L in organic solvents at 20 ℃
form  Liquid
pka pK1:4.32(0);pK2:10.20(SH) (25°C)
color  Clear colorless to slightly yellow
PH 2 (H2O, 20℃)(undiluted)
Odor at 0.01 % in propylene glycol. meaty sulfurous roasted
Odor Type sulfurous
Water Solubility  MISCIBLE
JECFA Number 551
Merck  14,9340
BRN  506218
InChIKey PMNLUUOXGOOLSP-UHFFFAOYSA-N
LogP 1.15 at 20℃
CAS DataBase Reference 79-42-5(CAS DataBase Reference)
NIST Chemistry Reference 2-Mercaptopropanoic acid(79-42-5)
EPA Substance Registry System Propanoic acid, 2-mercapto- (79-42-5)

Description and Uses

Depilatory, hair-waving preparations.

Safety

Symbol(GHS) 
GHS05
Signal word  Danger
Hazard statements  H314
Precautionary statements  P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363-P405
Hazard Codes  C
Risk Statements  34-22
Safety Statements  26-36/37/39-45-25
RIDADR  UN 2936 6.1/PG 2
WGK Germany  1
RTECS  UF5250000
TSCA  Yes
HazardClass  6.1
PackingGroup  II
HS Code  29309070
Toxicity LD50 orally in Rabbit: 730 mg/kg

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