1.Product Name: Dimethyldichlorosilane (DMDCS/M2)
2.Molecular Formula: (CH3)2SiCl2
3.Molecular Weight:129. 1
4.CAS No.: 75-78-5
5. UN No.:1162
6.Boiling Point: 71℃
7.Melting Point:-76℃
8.Flash Point: - 16℃ (Closed cup)
9. Relative Density (water=1):1.07
10.Auto-ignition Temperature: 380℃
11.Relative Vapour density (air=1): 4.4
12. Vapour Pressure:14.5kPa (at 20℃)
13. Explosion Limits Lower[%(V/V)]: 3.4
14. Explosion Limits Upper[%(V/V)]:9.5
15. Water Solubility: Reaction
16. PH: Reacts with water to produce hydrogen chloride.
17.Technological Index
Item | Index |
Appearance | Colorless transparent liquid. |
Content of Dimethyldichlorosilane/% ≥ | 99.5 |
Content of Methyltrichlorosilane/% ≤ | 0.05 |
18.Application and Usage
It is inflammable and easy to explode. It is a base material for manufacturing silicone intermediates, silicone oil, silicone rubber and silicone resins. It can also be used to manufacture super heat-resisting and high strong silicon carban fiber.
19.Package, Storage and Handling
N.W 200KG/Steel drum or ISO Tank.
Storage at ventilate and dry place and prevention from water, heat and fire; It should be kept away from oxidant, acid and alkali. Handling according to hazardous substances and prevention from exposing to sunlight and rain. Be careful when loading and unloading to avoid damages of the package.
20.Others
Chemical Stability: Stable in closed containers under specified storage and handling conditions.
Conditions to Avoid: Incompatible materials, any sources of ignition or heat, exposure to moist air or water, electrical sparks.
Incompatibilities with Other Materials: Strong oxidizing agents, water, alcohols, caustics, ammonia. Attacks many metals in presence of water. （ Reacts violently with water to produce hydrogen chloride. Reacts violently with alcohols, amines causing fire and explosion hazard.）
Hazardous Decomposition Products: The substance decomposes on heating producing toxic and corrosive fumes including hydrogen chloride, phosgene, and chlorine compounds. Reacts violently with water to produce hydrogen chloride.
Hazardous Polymerization: Will not occur.
