8.08625

2,2′-Thiodiacetic acid

for synthesis

• Synonym(s): 2,2′-Thiodiacetic acid, Thiodiglycollic acid, Bis(carboxymethyl)sulfide
• Linear Formula: S(CH₂COOH)₂
• CAS Number: 123-93-3
• Molecular Weight: 150.15
• MDL number: MFCD00004359
• UNSPSC Code: 12352106
• EC Index Number: 204-663-9
• NACRES: NA.22

Properties

• Quality Level: 200
• Assay: ≥99.0% (acidimetric)
• autoignition temp.: 350 °C
• potency: >2000 mg/kg LD₅₀, oral (Rat)
• pH: 2.2 (20 °C, 10 g/L in H₂O)
• mp: 128-131 °C
• solubility: 400 g/L
• storage temp.: 2-30°C
• InChI: 1S/C4H6O4S/c5-3(6)1-9-2-4(7)8/h1-2H2,(H,5,6)(H,7,8)
• InChI key: UVZICZIVKIMRNE-UHFFFAOYSA-N

Description

Analysis Note

Assay (acidimetric): ≥ 99.0 %
Melting range (lower value): ≥ 128 °C
Melting range (upper value): ≤ 131 °C
Identity (IR): passes test

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H315 - H319 - H335
• Precautionary Statements: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 8A - Combustible, corrosive hazardous materials
• WGK: WGK 2