2,2'-Thiodiacetic acid , 98% , 123-93-3

Synonym(s):
Thiodiglycolic acid;Dicarboxydimethyl sulfide;Thiodiglycollic acid, Bis(carboxymethyl)sulfide;2,2′-Dithiodiacetic acid;2,2′-Thio-bis(acetic acid)

CAS NO.：123-93-3

Empirical Formula: C4H6O4S

Molecular Weight: 150.15

MDL number: MFCD00004359

EINECS: 204-663-9

PRODUCT Properties

• Melting point: 128-131 °C(lit.)
• Boiling point: 241.69°C (rough estimate)
• Density: 1.352 (estimate)
• refractive index: 1.5500 (estimate)
• storage temp.: Store below +30°C.
• solubility: 400g/l
• form: Crystalline Powder
• pka: pK1:3.32;pK2:4.29 (25°C)
• color: White to grayish
• PH: 2.2 (10g/l, H2O, 20℃)
• Water Solubility: soluble
• Sensitive: Stench
• Merck: 14,9331
• BRN: 1764392
• LogP: -0.780 (est)
• CAS DataBase Reference: 123-93-3(CAS DataBase Reference)
• EPA Substance Registry System: Acetic acid, 2,2'-thiobis- (123-93-3)

Description and Uses

It finds it applications in the production of [1,4]oxathiane-2,6-dione by heating. It is employed as an anti-oxidant and reducing agent in cosmetics industry.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H319-H335
• Precautionary statements: P302+P352-P305+P351+P338
• Hazard Codes: C
• Risk Statements: 36/37/38-34
• Safety Statements: 26-36/37/39-45
• RIDADR: UN 3261 8/PG 2
• WGK Germany: 3
• RTECS: AJ6475000
• F: 13
• Autoignition Temperature: 350 °C
• Hazard Note: Corrosive/Stench
• TSCA: Yes
• HazardClass: 8
• PackingGroup: III
• HS Code: 29309070
• Hazardous Substances Data: 123-93-3(Hazardous Substances Data)
• Toxicity: LD50 orally in Rabbit: > 2000 mg/kg
• Limited Quantities: 1.0 L (0.3 gallons) (liquid) or 1 Kg (2.2 lbs) (solid)
• Excepted Quantities: Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)