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Dimethyl sulfoxide

Catalog No. 41644 Name Sigma Aldrich
CAS Number 67-68-5 Website http://www.sigmaaldrich.com
M. F. C2H6OS Telephone 1-800-521-8956
M. W. 78.13344 Fax
Purity ≥99.5% (GC) Email
Storage Chembase ID: 964

SYNONYMS

Title
二甲基亚砜
IUPAC name
methanesulfinylmethane
IUPAC Traditional name
dimethyl sulfoxide
Synonyms
DMSO
甲基亚砜
Methyl sulfoxide

DATABASE IDS

CAS Number 67-68-5
MDL Number MFCD00002089
EC Number 200-664-3
Beilstein Number 506008

PROPERTIES

Cation Traces Pb: ≤0.1 mg/kg
Cation Traces Sr: ≤0.1 mg/kg
Cation Traces Zn: ≤0.1 mg/kg
Evaporation Residue ≤0.005%
Grade puriss. p.a.
Impurities ≤0.001% free acid (as CH3COOH)
Impurities ≤0.1% water
Linear Formula (CH3)2SO
Purity ≥99.5% (GC)
Cation Traces Al: ≤0.5 mg/kg
Cation Traces Ba: ≤0.1 mg/kg
Cation Traces Bi: ≤0.1 mg/kg
Cation Traces Ca: ≤0.5 mg/kg
Cation Traces Cd: ≤0.05 mg/kg
Cation Traces Co: ≤0.02 mg/kg
Cation Traces Cr: ≤0.02 mg/kg
Cation Traces Cu: ≤0.02 mg/kg
Cation Traces Fe: ≤0.5 mg/kg
Cation Traces K: ≤0.5 mg/kg
Cation Traces Li: ≤0.1 mg/kg
Cation Traces Mg: ≤0.1 mg/kg
Cation Traces Mn: ≤0.02 mg/kg
Cation Traces Mo: ≤0.1 mg/kg
Cation Traces Na: ≤1 mg/kg
Cation Traces Ni: ≤0.5 mg/kg
Auto Ignition Point 573 °F
Boiling Point 189 °C(lit.)
Density 1.100 g/mL at 20 °C
Density 1.10 g/mL(lit.)
Flash Point 87 °C
Flash Point 188.6 °F
Melting Point 16-19 °C(lit.)
Melting Point 18-20 °C
Refractive Index n20/D 1.479(lit.)
Refractive Index n20/D 1.479
Vapor Density 2.7 (vs air)
Vapor Pressure 0.42 mmHg ( 20 °C)
Explode Limits 42 %, 63 °F
MSDS Link Download
Personal Protective Equipment Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
RTECS PV6210000
German water hazard class 1

DETAILS

Description (English)
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.
Description (简体中文)
Caution
容易过度冷却,并在室温下缓慢融化固化的产品放在室温下可以再次液化,对其本身无影响。

REFERENCES