3-Mercapto-1,2-propanediol

Description

3-Mercapto-1,2-propanediol · CAS 96-27-5 · C3H8O2S. UNII AAO1P0WSXJ. Boiling Point: 118 °C @ 5 MM HG; Density: 1.295.

Identification

CAS Registry Number	96-27-5
PubChem CID	7291
Molecular formula	C3H8O2S
IUPAC name	3-sulfanylpropane-1,2-diol
UNII (FDA)	AAO1P0WSXJ

Computed Descriptors

Molecular Weight	108.16
XLogP3	-0.8
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	2
Exact Mass	108.02450067
Monoisotopic Mass	108.02450067
Topological Polar Surface Area	41.5
Heavy Atom Count	6
Formal Charge	0

Physical & Chemical Properties

Boiling Point	118 °C @ 5 MM HG
Density	1.295

Physical description & handling notes

• Liquid
• Water-white liquid; Soluble in water; [Hawley] Yellowish hygroscopic liquid; Slightly soluble in water; [Merck Index] Colorless viscous liquid with a stench; Slightly soluble in water; [MSDSonline]
• YELLOWISH, VERY VISCOUS LIQUID
• COLORLESS OR PALE YELLOW
• SLIGHT SULFIDIC
• SLIGHTLY SOL IN WATER; MISCIBLE WITH ALCOHOL; INSOL IN ETHER

Regulatory Status

Regulatory & Food Contact	CIR / INCI: Hair waving or straightening; Depilatory; Keratolytic; Reducing

GHS Hazard Classification

Reported hazard statements	H302 (93.9%), H311 (93.1%), H315 (93.1%), H317 (48.3%), H319 (82.3%), H331 (37.6%), H335 (72.9%)

Documented Uses

• Used as a preservative (pharmaceuticals), reducing agent , and polymer stabilizer; [HSDB] Used as a preservative (antioxidant), analytical reagent, and research chemical; [Merck Index]
• IN WOUND HEALING; VET: TO PROMOTE WOUND HEALING (SOLN 1:5000)
• PHARMACEUTIC AID (PRESERVATIVE)
• REDUCING AGENT FOR CYSTINE MOLECULE IN HUMAN HAIR & WOOL; FOR STABILIZATION OF ACRYLONITRILE POLYMERS
• Cosmetics -> Hair waving or straightening; Depilatory; Keratolytic; Reducing
• PREPD BY HEATING GLYCEROL-ALPHA-MONOCHLOROHYDRIN WITH KHS IN ALCOHOLIC SOLUTION. SUTTON, J AM MED ASSOC 104, 2168 (1935).

Synonyms

3-Mercapto-1,2-propanediol; 1-Thioglycerol; 96-27-5; Monothioglycerol; THIOGLYCEROL; Thioglycerin; Thiovanol; alpha-Thioglycerol; Thioglycerine; Glycerol-1-thiol; 1-Mercaptoglycerol; 1-Monothioglycerol; 1,2-Propanediol, 3-mercapto-; Monothioglycerin; 2,3-Dihydroxypropanethiol; 1-Mercapto-2,3-propanediol

Frequently Asked Questions

What are the CAS number and molecular formula of 3-Mercapto-1,2-propanediol?

CAS 96-27-5; molecular formula C3H8O2S; molecular weight — g/mol.

What other names is 3-Mercapto-1,2-propanediol known by?

3-Mercapto-1,2-propanediol, 1-Thioglycerol, 96-27-5, Monothioglycerol, THIOGLYCEROL, Thioglycerin.

What is the regulatory status of 3-Mercapto-1,2-propanediol?

Documented regulatory listings: CIR / INCI: Hair waving or straightening; Depilatory; Keratolytic; Reducing.

Is 3-Mercapto-1,2-propanediol classified as hazardous?

Hazard statements reported: H302, H311, H315, H317, H319.

What are the key physical properties of 3-Mercapto-1,2-propanediol?

Boiling Point: 118 °C @ 5 MM HG; Density: 1.295.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.