W318000

Sigma-Aldrich

2-Mercaptopropionic acid

≥95%, FG

Synonym(s):
Thiolactic acid, 2-Mercaptopropionic acid
Linear Formula:
CH3CH(SH)COOH
CAS Number:
Molecular Weight:
106.14
FEMA Number:
3180
Beilstein/REAXYS Number:
506218
EC Number:
Council of Europe no.:
4156
MDL number:
PubChem Substance ID:
Flavis number:
12.039
NACRES:
NA.21

Quality Level

biological source

synthetic

grade

FG
Halal
Kosher

Agency/Method

follows IFRA guidelines
meets purity specifications of JECFA

reg. compliance

EU Regulation 1223/2009
EU Regulation 1334/2008 & 872/2012

assay

≥95%

refractive index

n20/D 1.481 (lit.)

bp

102 °C/16 mmHg (lit.)
203-208 °C (lit.)

mp

10-14 °C (lit.)

density

1.196 g/mL at 25 °C (lit.)

Documentation

see Safety & Documentation for available documents

Featured Industry

Flavors and Fragrances

Organoleptic

meaty; roasted; sulfurous

food allergen

no known allergens

fragrance allergen

no known allergens

SMILES string

CC(S)C(O)=O

InChI

1S/C3H6O2S/c1-2(6)3(4)5/h2,6H,1H3,(H,4,5)

InChI key

PMNLUUOXGOOLSP-UHFFFAOYSA-N

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Related Categories

General description

2-Mercaptopropionic acid is a synthetic flavor and skin sensitizer used in cosmetics, food and household care products.

Packaging

5, 25 kg in composite drum
1 kg in glass bottle

Other Notes

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Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

UN 2936 6.1 / PGII

WGK Germany

WGK 1

Flash Point(F)

190.4 °F - closed cup

Flash Point(C)

88 °C - closed cup

The suitability of barley and corn starches in their native and chemically modified forms for volatile meat flavor encapsulation
Jeon Y-J, et al.
Food Research International, 36(4), 349-355 (2003)
RIFM fragrance ingredient safety assessment, 2-mercaptopropionic acid, CAS Registry Number 79-42-5
Api AM, et al.
Food And Chemical Toxicology, 111987-111987 (2021)
P Leroy et al.
Journal of chromatography, 564(1), 258-265 (1991-03-08)
A simple and fast high-performance liquid chromatographic method was developed for the simultaneous measurement of 2-mercaptopropionylglycine (Tiopronine) and its metabolite (2-mercaptopropionic acid) in human plasma after the administration of a pharmaceutical dosage form (Acadione). The sample treatment before high-performance liquid...
Glen G Briand et al.
Inorganic chemistry, 43(20), 6495-6500 (2004-09-28)
Although bismuth compounds have been used in medicine for over 200 years, chemical characterization of complexes involving biological molecules is minimal and mechanisms of bioactivity are ill-defined. The thiophilic nature of bismuth implicates sulfur centers as likely sites for interaction...
H/D exchange reactions in dinuclear iron thiolates as activity assay models of Fe-H2ase.
X Zhao et al.
Journal of the American Chemical Society, 123(39), 9710-9711 (2001-09-27)

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