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General Purpose Solvents

DIMETHYL SULPHOXIDE GC Reference Standard

RA003790 CAS 67-68-5

Identity

Product code
RA003790
CAS number
67-68-5
Molecular formula
CH3SO.CH3
Molecular weight
78.13

Classification

Technical Data

Properties

PropertyValueUnit
Physical state at 20 °C Liquid —
Vapour density 2.7 —
Density [g/cm3] 1.1 g/cm3 g/cm3
Solubility in water Completely miscible —
Partition coefficient Log Pow octanol / water at 20°C -2.03 —
Explosion limits - upper [%] 42 % %
Explosion limits -lower [%] 3.50 % %
Colour Clear Colorless —
Odour Garlic-like odor —
Melting point/ Freezing point [°C] 16 - 19 °C °C
Auto-ignition temperature [°C] 215 °C °C
Flash point [°C] 87 °C °C
Boiling point [°C] 189 °C °C
Evaporation rate 4.3 —
Vapour pressure [20°C] 0.55 hPa hPa

These are recorded catalogue property values. Product specification limits, where available, are listed under Specifications.

Specifications

ParameterSpecificationUnit Method
Appearance Clear colourless liquid — —
Purity Min 99.9 % % GC
Potency Reported on COA — —
Identification Conforms to structure — IR
Identification (1H NMR method) Conforms to structure — —
Identification (GC-MS method) Passes test — —
Colour scale Max 10 APHA APHA —
Residue on evaporation Max 0.002 % % —
Water Max 0.1 % % KF

Method names in parentheses (for example "GC method") identify the analytical technique applied to that parameter; they are not product grades.

Packaging

Pack size SKU
20 mL RA003790-PK-20ML
100 mL RA003790-PK-100ML