Product name: Dimethyl Sulfone (MSM)
Synonyms: Methyl sulfonylmethane, MSM, DMSO₂, Methyl sulfone
CAS‑No：67‑71‑0
EINECS：200‑665‑9
Molecular Formula：C2H6O2S
Molecular Weight：94.13 g/mol
Grade: Industrial / Food / Pharma Grade
Typical Assay: ≥99.5%
Appearance: White crystalline powder / flakes, almost odourless1. Physical‑Chemical Properties
| Parameter | Value | Condition |
|---|---|---|
| Melting Point | 107‑109 ℃ | lit. |
| Boiling Point | 238 ℃ | 760 mmHg |
| Density | 1.16 g/cm³ | solid |
| Bulk Density | ~880 kg/m³ | powder form |
| Refractive Index nD | 1.4226 | 20 ℃ |
| Flash Point (closed cup) | 143 ℃ | CC |
| Water Solubility | 150 g/L | 20 ℃, freely soluble |
| Solubility | Soluble in methanol, ethanol, acetone; slightly soluble in ether, chloroform | ‑ |
| LogP | ‑1.07 | estimated |
| Stability | Stable under normal conditions; incompatible with strong oxidizing agents | ‑ |
2. Typical Specifications (Food / Industrial Grade)
| Test Item | Specification |
|---|---|
| Purity | ≥99.5 % |
| Water Content | ≤0.20 % |
| Melting Range | 107‑109 ℃ |
| Heavy metals (Pb) | ≤10 ppm |
| Ash | ≤0.10 % |
| Colour | White, no visible foreign particles |
3. Applications
Dietary supplement raw material (MSM): nutritional health‑care ingredient for joint‑health formulations.
High‑boiling polar solvent: high‑temperature reaction solvent in fine chemical synthesis.
Pharmaceutical intermediate & excipient: API synthesis, cosmetic raw‑material.
Analytical chemistry: reference standard, NMR solvent additive.
4. Storage & Handling
Store in cool, dry, well‑ventilated place, temperature below 30 ℃.
Keep container tightly closed, avoid moisture absorption.
Keep away from strong oxidants, heat sources.
Avoid dust inhalation; wear dust mask, gloves during operation.
5. Packaging & Transport
Package: 25 kg kraft paper bag / PE inner bag; 500 kg big‑bag.
HS Code: 29309070
Transport classification: Not dangerous goods, non‑UN
WGK‑1 (Germany, low water hazard)
Disclaimer: This TDS is for reference only. Actual data subject to batch‑wise COA and SDS.
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