A3146712
Dimethyldichlorosilane , CP,96.0% , 75-78-5
Synonym(s):
Dichlorodimethylsilane;Dimethyldichlorosilane;DMDCS;Sylon CT;Silane M2
CAS NO.：75-78-5
Empirical Formula: C2H6Cl2Si
Molecular Weight: 129.06
MDL number: MFCD00000491
EINECS: 200-901-0
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | -76 °C |
| Boiling point: | 70 °C(lit.) |
| Density | 1.333 g/mL at 20 °C |
| vapor pressure | <200 hPa (20 °C) |
| refractive index | n |
| Flash point: | 3 °F |
| storage temp. | Store below +30°C. |
| solubility | sol chlorinated solvents and ethereal solvents; reacts
with protic solvents. |
| form | liquid |
| color | colorless |
| Specific Gravity | 1.0637 |
| explosive limit | 1.75-48.5%(V) |
| Water Solubility | reacts |
| Sensitive | Moisture Sensitive |
| Hydrolytic Sensitivity | 8: reacts rapidly with moisture, water, protic solvents |
| BRN | 605287 |
| Stability: | Stable. Reacts violently with water and alcohols. Highly flammable. Incompatible with strong oxidizing agents, water, alcohols, caustics, ammonia. |
| CAS DataBase Reference | 75-78-5(CAS DataBase Reference) |
| NIST Chemistry Reference | Silane, dichlorodimethyl-(75-78-5) |
| EPA Substance Registry System | Dimethyldichlorosilane (75-78-5) |
Description and Uses
Dichlorodimethylsilane is used to prepare a resin bound siloxane with tertiary alcohols and it is also used as a reagent for synthesis of optically active ansa-mettallocene polymerization catalysts. It acts as a precursor to silicone and polysilane compounds. It is also used in the glass coating to protect it from micro particles. It is involved in the preparation of resin bound siloxane with reactivity towards tertiary alcohols.
Safety
| Symbol(GHS) |     GHS02,GHS05,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H225-H304-H314-H336-H361d-H373-H412 |
| Precautionary statements | P210-P280-P301+P330+P331-P303+P361+P353-P304+P340+P310-P305+P351+P338 |
| Hazard Codes | Xn,Xi,F,N,C |
| Risk Statements | 20-59-36/37/38-11-67-65-63-48/20-38-20/21-50/53-37-35-20/22-14-34 |
| Safety Statements | 60-61-62-36/37-59-45-36/37/39-26-16-7/9-2 |
| RIDADR | UN 2924 3/PG 2 |
| WGK Germany | 3 |
| RTECS | VV3150000 |
| F | 3-10-19-21 |
| Autoignition Temperature | 425 °C |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29310095 |
| Hazardous Substances Data | 75-78-5(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 6056 mg/kg |
