900645

Dimethyl sulfoxide

anhydrous, ZerO₂^®, ≥99.9%

• Synonym(s): Degassed and low oxygen dimethyl sulfoxide, Dimethyl sulfoxide ZerO₂^®, DMSO
• Linear Formula: (CH₃)₂SO
• CAS Number: 67-68-5
• Molecular Weight: 78.13
• Beilstein/REAXYS Number: 506008
• EC Number: 200-664-3
• MDL number: MFCD00002089
• UNSPSC Code: 12191502
• NACRES: NA.21

Properties

• grade: ZerO₂^®
• Quality Level: 100
• vapor density: 2.7 (vs air)
• vapor pressure: 0.42 mmHg ( 20 °C)
• assay: ≥99.9%
• form: liquid
• autoignition temp.: 573 °F
• quality: anhydrous
• expl. lim.: 42 %, 63 °F
• impurities: ≤0.005% water; water
• refractive index: n20/D 1.479 (lit.)
• bp: 189 °C (lit.)
• mp: 16-19 °C (lit.)
• density: 1.10 g/mL (lit.)
• SMILES string: CS(C)=O
• InChI: 1S/C2H6OS/c1-4(2)3/h1-2H3
• InChI key: IAZDPXIOMUYVGZ-UHFFFAOYSA-N

Description

Application

ZerO₂ products are rigorously degassed with highly pure inert gas providing solvents and solutions (anhydrous if specified) with very low residual oxygen content.

Caution

Supercools easily and remelts slowly at room temperature. Solidified product can be re-liquified by warming to room temperature without detriment to the product.

Legal Information

ZerO₂ is a registered trademark of Sigma-Aldrich Co. LLC

Safety Information

• Storage Class: 10 - Combustible liquids
• wgk_germany: WGK 1
• flash_point_f: 188.6 °F - closed cup
• flash_point_c: 87 °C - closed cup