Dimethyl sulfoxide DMSO (67-68-5)
1. Basic Information
1. Chemical name: Dimethyl sulfoxide
2. Chinese Aliases: Methyl Sulfoxide; Dimethylsulfone; DMSO
3. English name: Dimethyl Sulfoxide
4. Molecular formula: C₂H₆OS
5. Molecular weight: 78.13
6. CAS number: 67-68-5
7. EINECS number: 200-664-3
8. Appearance: Colorless transparent liquid with no obvious odor, hygroscopicity and strong polar solubility
2. Technical Parameters GB/T 21395—2024
Project
Indicators
Type I
Type II
Type III
Appearance
Colorless, transparent liquid or crystal
Dimethyl sulfoxide, w/%
≥99.98
≥99.96
≥99.90
Moisture, w/%
≤0.03
≤0.03
≤0.10
Acid value (as KOH)/(mg/g)
≤0.01
≤0.02
≤0.03
Crystallization point/°C
≥18.3
≥18.3
≥18.1
Transmittance (400 nm)/%
≥99.0
≥99.0
≥98.0
Refractive index
1.4778～1.4800
1.4778～1.4800
1.4775～1.4800
Chromaticity (platinum-cobalt scale) / Hazen units
≤10
Density (25°C)/(g/cm³)
1.0940～1.1030
1.0940～1.1030
1.0930～1.1030
Metal ion content / (μg/kg)
Sodium
≤10
/
/
Magnesium
≤10
/
/
Aluminum
≤10
/
/
Potassium
≤10
/
/
Calcium
≤10
/
/
Chromium
≤10
/
/
Manganese
≤10
/
/
Iron
≤10
/
/
Nickel
≤10
/
/
Copper
≤10
/
/
Zinc
≤10
/
/
Lead
≤10
/
/
(The above parameters are reference values; please refer to the factory inspection report for details.) ）
3. Packaging specifications
1. 225~230kg plastic drums
2. 1,000 kg IBC ton drum
3. 25kg plastic drums or sample packs available (according to customer requirements)