8.00795

1,2-Ethanedithiol

for synthesis

• Synonym(s): 1,2-Ethanedithiol
• Empirical Formula (Hill Notation): C₂H₆S₂
• CAS Number: 540-63-6
• Molecular Weight: 94.20
• MDL number: MFCD00004892
• UNSPSC Code: 12352105
• EC Index Number: 208-752-3
• NACRES: NA.22

Properties

• vapor pressure: 6.4 hPa ( 20 °C)
• Quality Level: 200
• Assay: ≥99.0% (GC)
• form: liquid
• potency: 120 mg/kg LD₅₀, oral (Rat); 197 mg/kg LD₅₀, skin (Rabbit)
• mp: -41 °C
• transition temp: flash point 50 °C
• density: 1.12 g/cm³ at 20 °C
• storage temp.: 2-30°C
• InChI: 1S/C2H6S2/c3-1-2-4/h3-4H,1-2H2
• InChI key: VYMPLPIFKRHAAC-UHFFFAOYSA-N

Description

Application

1,2-Ethanedithiol can be used as a reactant to synthesize:

• Aryl thiols via copper-catalyzed single-step reaction with aryl halides.
• 1,3-Dithiolanes via Lewis acid-catalyzed chemoselective condensation with carbonyl compounds.
• Polyalkylene sulfides via polycondensation with dibromides in the presence of NaH.

Analysis Note

Assay (GC, area%): ≥ 99.0 % (a/a)
Density (d 20 °C/ 4 °C): 1.123 - 1.126
Identity (IR): passes test

Safety Information

• Pictograms: GHS02,GHS06
• Signal Word: Danger
• Hazard Statements: H226,H301,H310 + H330
• Precautionary Statements: P210 - P233 - P240 - P280 - P303 + P361 + P353 - P304 + P340 + P310
• Hazard Classifications: Acute Tox. 2 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Flam. Liq. 3
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 3
• Flash Point(F): 111.2 °F - closed cup
• Flash Point(C): 44 °C - closed cup