巯基乙酸铵

Description

Ammonium Thioglycolate · CAS 5421-46-5 · C2H4O2S.H3N. UNII 6P9E788VZZ. Density: Specific gravity: 1.205 @ 20 °C; Vapor Pressure: 0.0000085 [mmHg]; Vapor Pressure: 8.5X10-6 mm Hg @ 25 °C /Estimated/.

Identification

CAS Registry Number	5421-46-5
PubChem CID	21534
Molecular formula	C2H4O2S.H3N
IUPAC name	azanium 2-sulfanylacetate
UNII (FDA)	6P9E788VZZ

Computed Descriptors

Molecular Weight	109.15
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	0
Exact Mass	109.01974964
Monoisotopic Mass	109.01974964
Topological Polar Surface Area	42.1
Heavy Atom Count	6
Formal Charge	0
Complexity	37.4

Physical & Chemical Properties

Density	Specific gravity: 1.205 @ 20 °C
Vapor Pressure	0.0000085 [mmHg]
Vapor Pressure	8.5X10-6 mm Hg @ 25 °C /Estimated/
pH	pH = 7.0-7.2

Physical description & handling notes

• Ammonium thioglycolate is a colorless to faint pink liquid with a repulsive, skunk-like odor. (NTP, 1992)
• Liquid
• Colorless to pale pink liquid; [HSDB]
• Colorless to pale pink liquid
• Repulsive odor
• Strong skunk-like odor

Regulatory Status

Regulatory & Food Contact	CIR / INCI: Cosmetic ingredients (Ammonium Thioglycolate) -> CIR (Cosmetic Ingredient Review) CIR / INCI: Depilatory; Reducing

GHS Hazard Classification

Reported hazard statements	H290 (61.7%), H301 (97%), H317 (100%), H412 (12%), H319 (100%), H370, H373, H312

Documented Uses

• CIR ingredient: Ammonium Thioglycolate
• Solutions of various strengths are used for hair waving and for hair removal. May be used in permanent hair colors, levels up to 0.25%, as a stabilizer against oxidation. [HSDB]
• Dressing Hair [Category: Other]
• Ammonium thioglycolate may be used in permanent hair colors, levels up to 0.25%, as a stabilizer against oxidation.
• Cosmetics -> Depilatory; Reducing
• Oil and Gas Drilling, Extraction, and Support activities

Synonyms

AMMONIUM THIOGLYCOLATE; 5421-46-5; Ammonium mercaptoacetate; Thioglycolic acid ammonium salt; Thiofaco A-50; Acetic acid, mercapto-, monoammonium salt; Ammonium thioglycollate; USAF MO-2; ammonium sulfanylacetate; HSDB 7167; Thioglycollic acid, ammonium salt; NSC 6954; UNII-6P9E788VZZ; EINECS 226-540-9; Mercaptoacetic acid, monoammonium salt; 6P9E788VZZ

Frequently Asked Questions

What are the CAS number and molecular formula of Ammonium Thioglycolate?

CAS 5421-46-5; molecular formula C2H4O2S.H3N; molecular weight — g/mol.

What other names is Ammonium Thioglycolate known by?

AMMONIUM THIOGLYCOLATE, 5421-46-5, Ammonium mercaptoacetate, Thioglycolic acid ammonium salt, Thiofaco A-50, Acetic acid, mercapto-, monoammonium salt.

What is the regulatory status of Ammonium Thioglycolate?

Documented regulatory listings: CIR / INCI: Cosmetic ingredients (Ammonium Thioglycolate) -> CIR (Cosmetic Ingredient Review); CIR / INCI: Depilatory; Reducing.

Is Ammonium Thioglycolate classified as hazardous?

Hazard statements reported: H290, H301, H317, H412, H319.

What are the key physical properties of Ammonium Thioglycolate?

Density: Specific gravity: 1.205 @ 20 °C; Vapor Pressure: 0.0000085 [mmHg]; Vapor Pressure: 8.5X10-6 mm Hg @ 25 °C /Estimated/; pH: pH = 7.0-7.2.

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.