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149-74-6

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Identification

Name
Dichloromethylphenylsilane
CAS
149-74-6
Synonyms
DICHLOROMETHYLPHENYLSILANE
METHYLPHENYLDICHLOROSILANE
METHYLPHENYLSILICON DICHLORIDE
PHENYLDICHLOROMETHYLSILANE
PHENYLMETHYLDICHLOROSILANE
CM8930
Dichlor-fenyl-methylsilane
dichloromethylphenyl-silan
Methylphenyldichlorosilane(Dichloromethylphenylsilane)
Methylphenyldichlorosilane,min.97%
Silane, dichloromethylphenyl-
dow corning product z-1221
Methyl(phenyl)dichlorosilane (as hydrochloridy)
Dow Corning(R) product Z-1221, Methyl-phenyl-dichlorosilane
Methylphenyldichlorosilane, min. 97%
Dichloro(phenyl)(methyl)silane
Methyldichlorophenylsilane
EINECS(EC#)
205-746-2
Molecular Formula
C7H8Cl2Si
MDL Number
MFCD00000490
Molecular Weight
191.13
MOL File
149-74-6.mol

Chemical Properties

Appearance
CLEAR COLOURLESS LIQUID
Appearance
Dichloromethylphenylsilane is a flammable, colorless liquid.
mp 
-53°C
bp 
205 °C(lit.)

density 
1.176 g/mL at 25 °C(lit.)

refractive index 
n20/D 1.519(lit.)

Fp 
181 °F

Water Solubility 
reacts
Sensitive 
Moisture Sensitive
BRN 
970975
Uses
Manufacture of silicones.
CAS DataBase Reference
149-74-6(CAS DataBase Reference)
NIST Chemistry Reference
Silane, dichloromethylphenyl-(149-74-6)

Safety Data

Hazard Codes 
C
Risk Statements 
R14:Reacts violently with water.
R34:Causes burns.
Safety Statements 
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 .
S43:In case of fire, use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add-Never use water) .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
RIDADR 
UN 2437 8/PG 2

WGK Germany 
1

RTECS 
VV3530000


10-21
TSCA 
Yes
HazardClass 
8
PackingGroup 
II
HS Code 
29310095
Safety Profile
Poison by inhalation, subcutaneous, and intraperitoneal routes. Corrosive to eyes, skin, and mucous membranes. Flammable liquid. When heated to decomposition it emits toxic fumes of Cl-. See also CHLOROSILANES.
Hazardous Substances Data
149-74-6(Hazardous Substances Data)

Raw materials And Preparation Products

Preparation Products
Dimethoxymethylphenylsilane

Hazard Information

General Description
A colorless liquid. Insoluble in water and denser than water. Flash point between 70-140°F. Corrosive to skin and eyes and may be toxic by inhalation and skin absorption. Used to make other chemicals.
Reactivity Profile
Chlorosilanes, such as METHYLPHENYLDICHLOROSILANE, 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.
Hazard
Flammable, moderate fire risk, reactsstrongly with oxidizing materials. Irritant.
Health Hazard
The chemical is toxic and is an irritant. Contact may cause burns to the skin and eyes.
Potential Exposure
Used in the manufacture of silicones; and as a chemical intermediate for silicone fluids, resins, and elastomers
Fire Hazard
When heated to decomposition, METHYLPHENYLDICHLOROSILANE emits toxic fumes of chlorine-containing compounds. Flammable/combustible material; may be ignited by heat, sparks, or flames. Vapors may travel to a source of ignition and flash back. Container may explode in heat of fire. Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Fire may produce irritating or poisonous gases. Reacts strongly with oxidizing materials.
First aid
If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. If victim is conscious, administer water or milk. Do not induce vomiting.
Shipping
UN2437 Methylphenyldichlorosilane, Hazard class: 8; Labels: 8-Corrosive material
Incompatibilities
Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, and epoxides. Chlorosilanes react vigorously with bases and both organic and inorganic acids generating toxic and/or flammable gases. Chlorosilanes react with water, moist air, or steam to produce heat and toxic, corrosive fumes of hydrogen chloride. They may also produce flammable gaseous hydrogen. Contact with ammonia may form a self-igniting material. Attacks some metals in the presence of moisture

Material Safety Data Sheet(MSDS)

Spectrum Detail

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