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DIMETHYL SULPHOXIDE (IN-HOUSE GC STANDARD)

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COAs

Packings

100 ml (00100)

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Article No. GI070 Grade
Purity CAS No. 67-68-5
Molecular Formula CH3SO.CH3 Molecular Weight 78.13
H.S. Code 2930.9099 Shelf Life 36 Months

Physical Properties

Physical state at 20 °C Liquid Colour Clear Colorless
Odour Garlic-like odor Melting point/ Freezing point [°C] 16 - 19 °C
Auto-ignition temperature [°C] 215°C Flash point [°C] 87 °C
Boiling point [°C] 189 °C Evaporation rate 4.3
Vapour pressure [20°C] 0.55 hPa Vapour density 2.7
Density [g/cm3] 1.1 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%

Specifications

Appearance Clear colorless liquid Purity (by GC) Min 99.9%
Water (by KF) Max 0.1% Potency Reported on COA
Identification (by IR) Conforms to structure Identification (by 1H NMR) Conforms to structure
Identification (by GCMS) Conforms to structure Identification (by Mass) Conforms to structure
Specific gravity (at 20°C) 1.099 -1.101 Refractive index (20°C; 589 nm) 1.478 - 1.479
Residue on evaporation Max 0.002%
Revision Date: 20-Jan-2026

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