Dichlorodimethylsilane
- CAS No.
- 75-78-5
- Chemical Name:
- Dichlorodimethylsilane
- Synonyms
- DIMETHYLDICHLOROSILANE;Me2SiCl2;DIMETHYLSILICON DICHLORIDE;DMDCS;(CH3)2SiCl2;Dichlorodimethylsilicon;ls130;AW-DMCS;Inerton;SILANE M2
- CBNumber:
- CB8854243
- Molecular Formula:
- C2H6Cl2Si
- Molecular Weight:
- 129.06
- MOL File:
- 75-78-5.mol
- MSDS File:
- SDS
- Modify Date:
- 2024/7/30 14:17:11
| 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 |
| Specific Gravity | 1.0637 |
| color | colorless |
| 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) |
SAFETY
Risk and Safety Statements
| 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 | |||||||||
| Toxicity | LD50 orally in Rabbit: 6056 mg/kg | |||||||||
| NFPA 704 |
|
Dichlorodimethylsilane price More Price(21)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 85126 | Silanization solution I ~5% (dimethyldichlorosilane in heptane), Selectophore? | 75-78-5 | 250ML | ₹5572.7 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 85126 | Silanization solution I ~5% (dimethyldichlorosilane in heptane), Selectophore? | 75-78-5 | 1L | ₹15384.6 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 80430 | Dichlorodimethylsilane produced by Wacker Chemie AG, Burghausen, Germany, ≥99.0% (GC) | 75-78-5 | 500G | ₹3777.93 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 80430 | Dichlorodimethylsilane produced by Wacker Chemie AG, Burghausen, Germany, ≥99.0% (GC) | 75-78-5 | 5KG | ₹24681 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 8.03452 | Dichlorodimethylsilane for synthesis | 75-78-5 | 250ML | ₹5240.01 | 2022-06-14 | Buy |
Dichlorodimethylsilane Chemical Properties,Uses,Production
Chemical Properties
Colorless to brown liquid
Physical properties
mp ?76°C; bp 70–71°C; d 1.064 g cm?3.
Uses
Dichlorodimethylsilane can be used as additive for pinacol cyclization; protecting group for diols and
carbonyl compounds;precursor for a wide variety of siliconbased
reagents.
Dichlorodimethylsilane (1) allows clean
pinacol cyclization of a keto aldehyde to occur without competition
from an aldol reaction (eq 1).
Production Methods
Produced by the action of silicon on methyl chloride in presence of copper catalyst, or by Grignard reaction from methyl chloride and silicon tetrachloride.
General Description
A colorless fuming liquid with a pungent odor. Flash point 16°F. Vapor and liquid may cause burns. Denser than water. Vapors heavier than air.
Reactivity Profile
Chlorosilanes, such as Dichlorodimethylsilane, are compounds in which silicon is bonded to from one to four chlorine atoms with other bonds to hydrogen and/or alkyl groups. Chlorosilanes react with water, moist air, or steam to produce heat and toxic, corrosive fumes of hydrogen chloride. They may also produce flammable gaseous H2. They can serve as chlorination agents. Chlorosilanes react vigorously with both organic and inorganic acids and with bases to generate toxic or flammable gases.
Health Hazard
Inhalation irritates mucous membranes. Severe gastrointestinal damage may occur. Vapors cause severe eye and lung injury. Upon short contact, second and third degree burns may occur.
Fire Hazard
Vapor may explode if ignited in an enclosed area. Reacts vigorously with water to generate hydrogen chloride. Hydrogen chloride and phosgene gases may be formed upon heating or in fire. Runoff to sewer may create fire or explosion hazard.
Safety Profile
Poison by ingestion and intraperitoneal routes. Moderately toxic by inhalation. A skin and severe eye irritant. Violent reaction on contact with water. When heated to decomposition it emits toxic fumes of Cl-. See also CHLOROSILANES.
Purification Methods
Other impurities are chlorinated silanes and methylsilanes. Fractionate it through a 3/8in diameter 7ft Stedman column (p 11) rated at 100 theoretical plates at almost total reflux. See purification of MeSiCl2. Solutions in heptane, 1,1,1-trichloroethane or 1-chloronaphthalene are used for the silanization of glassware and pipettes. [Sauer & Hadsell J Am Chem Soc 70 3590 1948, Beilstein 4 IV 4110.]
Dichlorodimethylsilane Preparation Products And Raw materials
Raw materials
Preparation Products
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|---|---|---|---|---|---|
| GLR Innovations | +91 9891111994 | New Delhi, India | 4542 | 58 | Inquiry |
| Otto Chemie Pvt Ltd | +91-2222070099 +91-2266382599 | Maharashtra, India | 429 | 58 | Inquiry |
| Sisco Research Laboratories Pvt. Ltd. | +91-22-4268 5800 | Mumbai, India | 4317 | 58 | Inquiry |
| Central Drug House(P) Ltd. | 91-11-49404040 | New Delhi, India | 6160 | 58 | Inquiry |
| Grr Fine Chem/Grr Exports | 91-79-40031771 | Gujarat, India | 405 | 58 | Inquiry |
| Clearsynth Labs | 91-22-45045900 | Maharashtra, India | 3889 | 58 | Inquiry |
| Spectrochem Private Limited | 08048372608Ext 246 | Maharashtra, India | 1056 | 58 | Inquiry |
| Otto Chemie Pvt. Ltd. | +91 9820041841 | Mumbai, India | 5873 | 58 | Inquiry |
| A.J Chemicals | 91-9810153283 | New Delhi, India | 6124 | 58 | Inquiry |
| TCI Chemicals (India) Pvt. Ltd. | 1800 425 7889 | New Delhi, India | 6778 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| GLR Innovations | 58 |
| Otto Chemie Pvt Ltd | 58 |
| Sisco Research Laboratories Pvt. Ltd. | 58 |
| Central Drug House(P) Ltd. | 58 |
| Grr Fine Chem/Grr Exports | 58 |
| Clearsynth Labs | 58 |
| Spectrochem Private Limited | 58 |
| Otto Chemie Pvt. Ltd. | 58 |
| A.J Chemicals | 58 |
| TCI Chemicals (India) Pvt. Ltd. | 58 |
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