Factory DMSO/ Dimethyl Sulfoxide 67-68-5
CAS No:67-68-5
Appearance:C2H6OS
| Item | Top grade | First grade | Qualified product |
| Appearance | white scaly or crystalline powder | white scaly or crystalline powder with slight colors | |
| molten Chroma(Chroma no. )≤ | 20 | 50 | 100 |
| thermostable Chroma(Chroma no. )≤ | 50 | 150 | - |
| Chroma of vitriol(Chroma no. )≤ | 60 | 100 | 150 |
| crystallization point°C≥ | 130.5 | 130.3 | 130.0 |
| Purity(mass fraction)%≥ | 99.50 | 99.50 | 99.00 |
| Free acid(mass fraction)≤ % | 0.20 | 0.30 | 0.50 |
| Ash(mass fraction)%≤ | 0.05 | - | - |
(1) Purification of river water, lake water and underground water.

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