Molecular Formula | C6H15ClSi |
Molar Mass | 150.72 |
Density | 0.87g/mLat 20°C(lit.) |
Melting Point | 86-89 °C (lit.) |
Boling Point | 125 °C (lit.) |
Flash Point | 73°F |
Water Solubility | Soluble in chloroform and ethyl acetate. Insoluble in water. |
Solubility | very sol nearly all common organic solvents such asTHF, methylene chloride, and DMF. |
Vapor Presure | 60-710Pa at 25℃ |
Appearance | White powder |
Specific Gravity | 1.225 |
Color | white |
Exposure Limit | ACGIH: TWA 20 ppmOSHA: Ceiling 300 ppm; TWA 200 ppmNIOSH: IDLH 500 ppm; TWA 100 ppm(375 mg/m3); STEL 150 ppm(560 mg/m3) |
BRN | 505999 |
Storage Condition | Store below +30°C. |
Sensitive | Moisture Sensitive |
Refractive Index | n20/D 1.46 |
MDL | MFCD00000501 |
Physical and Chemical Properties | Density 0.81 melting point 85-91°C boiling point 125°C flash point 22°C |
Use | Used as pharmaceutical intermediates and for organic synthesis, as a hydroxyl protective agent in organic synthesis |
Risk Codes | R22 - Harmful if swallowed R35 - Causes severe burns R40 - Limited evidence of a carcinogenic effect R34 - Causes burns R10 - Flammable R19 - May form explosive peroxides R11 - Highly Flammable R67 - Vapors may cause drowsiness and dizziness R65 - Harmful: May cause lung damage if swallowed R63 - Possible risk of harm to the unborn child R48/20 - R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R45 - May cause cancer R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R37 - Irritating to the respiratory system R36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S46 - If swallowed, seek medical advice immediately and show this container or label. S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S25 - Avoid contact with eyes. S16 - Keep away from sources of ignition. S28 - After contact with skin, wash immediately with plenty of soap-suds. S27 - Take off immediately all contaminated clothing. S33 - Take precautionary measures against static discharges. S29 - Do not empty into drains. S53 - Avoid exposure - obtain special instructions before use. S36/37 - Wear suitable protective clothing and gloves. |
UN IDs | UN 2925 4.1/PG 2 |
WGK Germany | 2 |
RTECS | VV2000000 |
FLUKA BRAND F CODES | 10-21 |
TSCA | Yes |
HS Code | 29310095 |
Hazard Note | Flammable/Corrosive/Moisture Sensitive |
Hazard Class | 4.1 |
Packing Group | III |
LogP | 2.5 at 20℃ |
NIST chemical information | Information provided by: webbook.nist.gov (external link) |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
use | auxiliary raw materials for the synthesis of prostaglandins, certain antibiotics, hypolipidemic drugs lovastatin and simvastatin used as pharmaceutical intermediates and Used in organic synthesis, as a hydroxyl protective agent in organic synthesis used in drug intermediates and organic synthesis, is a sterically hindered silicone protective agent, widely used in the synthesis of original drugs. It is used as a protective group for the hydroxyl group in the synthesis of ribonucleosides, and is also an oxidant and decyanating agent. silanizer. As a hydroxyl protective agent in organic synthesis, derivatization reagents are used for analysis and preparation. Protect tertiary alcohols. Reacts with alcohols to form silicone ether. Determination of the conformation of cholesterol derivatives. Synthesis of prostaglandins, auxiliary raw materials for certain antibiotics, lipid-lowering drugs Lofostine (Lovastatin) and Neofostine (Simvastatin). |
Production method | The pentane solution of dichlorodimethylsilane is cooled to 0°C, and the pentane solution of tert-butyl lithium is added dropwise under nitrogen and stirring. Maintain 0 ℃, stir for 1.5h, then raise the temperature to 25 ℃, and continue the reaction for 48h. Distillate, collect 125 ℃(97.5kPa) fraction, stand and solidify to obtain tert-butyl dimethylchlorosilane. The yield is 70%. |