T6750

Thioglycolic acid solution

~70 % (w/w) in H₂O

• Synonym(s): Mercaptoacetic acid
• Linear Formula: HSCH₂COOH
• CAS Number: 68-11-1
• Molecular Weight: 92.12
• Beilstein: 506166
• EC Number: 200-677-4
• MDL number: MFCD00004876
• UNSPSC Code: 12352201
• PubChem Substance ID: 24900401
• NACRES: NA.21

Properties

• Quality Level: 200
• concentration: ~70 % (w/w) in H₂O
• density: 1.25 g/mL at 25 °C (lit.)
• storage temp.: 2-8°C
• SMILES string: OC(=O)CS
• InChI: 1S/C2H4O2S/c3-2(4)1-5/h5H,1H2,(H,3,4)
• InChI key: CWERGRDVMFNCDR-UHFFFAOYSA-N

Description

Caution

At room temperature, concentrations over about 70% in water tend to form 1-2% thioglycolides per month which hydrolyze to the original free compound when made acid or alkaline. The 70% solution oxidizes in air but is stable at room temperature when tightly closed. Thioglycolate salts may also lose purity on storage. The exclusion of air does not materially improve stability.

Safety Information

• Pictograms: GHS06,GHS05
• Signal Word: Danger
• Hazard Statements: H301 + H311 + H331,H314,H317,H412
• Precautionary Statements: P261 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1B
• Storage Class Code: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• WGK: WGK 3
• Flash Point(F): 266.0 °F - closed cup
• Flash Point(C): 130 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves