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General Purpose Solvents

Dimethyl Sulphoxide Molecular Biology

RA000238 CAS 67-68-5 Molecular Biology

Identity

Product code
RA000238
CAS number
67-68-5
Grade
Molecular Biology
Purity
99.5%
Molecular formula
CH3SOCH3
Molecular weight
78.13

Classification

Applications
Molecular Biology

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 — —
Total Silicon Max 0.00002 % % —
Water Max 0.1 % % KF
Calcium (Ca) Max 0.0001 % % —
Copper (Cu) Max 0.00005 % % —
Iron (Fe) Max 0.0001 % % —
Potassium (K) Max 0.00005 % % —
Magnesium (Mg) Max 0.00005 % % —
Sodium (Na) Max 0.0002 % % —
Lead (Pb) Max 0.00002 % % —
Zinc (Zn) Max 0.00002 % % —
Purity Min 99.5 % % GC
Boiling Point 189 °C °C —
Density (d20°C/4°C) 1.100 - 1.104 — —
Refractive index (20°C; 589 nm) (20 °C) 1.478 - 1.479 — —
DNAase/RNAase/Proteases Not detectable — —
Free acid Max 0.001 % % —
Non-volatile matter Max 0.001 % % —
Total Phosphorus Max 0.00001 % % —

9 grades of this substance are listed. Each grade is a separate product with its own specifications, pack sizes and documents.

Packaging

Pack size SKU
100 mL RA000238-PK-100ML
500 mL RA000238-PK-500ML