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General Purpose Solvents

Dimethyl Sulphoxide For UV Spectroscopy

RA000240 CAS 67-68-5 Spectroscopy

Identity

Product code
RA000240
CAS number
67-68-5
Grade
Spectroscopy
Purity
99.8%
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 [% weight] 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 A clear colorless liquid — —
Acidity Max 0.0005 meq/g meq/g —
Alkalinity Max 0.0002 meq/g meq/g —
Purity Min 99.8 % % GC
at 270 nm Min 10 % % —
at 280 nm Min 40 % % —
at 310 nm Min 80 % % —
at 350 nm Min 98 % % —
Water Max 0.1 % % —
Residue on evaporation Max 0.001 % % —

Packaging

Pack size SKU
500 mL RA000240-PK-500ML
1 L RA000240-PK-1L