Ethylphenyldichlorosilane

  • Ethyl phenyl dichlorosilane
  • Phenylethyldichlorosilane
  • Silane, dichloroethylphenyl
Formula
C8H10Cl2Si
Structure
Description
Colorless liquid. Sharp odor like hydrochloric acid.

Registry Numbers and Inventories.
CAS
1125-27-5
EC (EINECS/ELINCS)
214-407-8
RTECS
VV3270000
RTECS class
Other
UN (DOT)
2435
Beilstein/Gmelin
2936355
Beilstein Reference
4-16-00-01521
Canada DSL/NDSL
NDSL
US TSCA
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C8H10Cl2Si
Formula mass
205.17
Boiling point, °C
225
Vapor pressure, mmHg
0.13 (25 C)
Vapor density (air=1)
7.07
Density
1.1564 g/cm3 (20 C)
Solubility in water
Reacts
Surface tension
25 g/s2
Refractive index
1.5182 (20 C)
Partition coefficient, pKow
5.47
Heat of vaporization
44.3 kJ/mol
Heat of combustion
-4259 kJ/mol

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Use water spray to knock-down vapors. Do not use water on material itself. Neutralize spilled material with crushed limestone, soda ash, or lime.
Stability
No data.

Fire.
Flash Point,°C
86
Fire fighting
Use dry chemical, dry sand, or carbon dioxide. Do not use water on material itself. If large quantities of combustibles are involved, use water in flooding quantities as spray and fog. Use water spray to knock-down vapors. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff. When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Contact with metals may evolve flammable hydrogen gas.
Combustion products
Toxic hydrogen chloride and phosgene fumes may be formed.

Health.
Exposure effects
   Ingestion
Gastrointestinal tissue corrosion was observed in animals given single oral doses and may occur in humans following ingestion.
   Inhalation
Three cases of permanently disabling reactive airway syndrome have been reported in adults exposed for several hours to fumes of sodium hydroxide, trichlorosilane, and silicon tetrachloride.
   Skin
The application of chlorosilanes to shaved rabbit skin produced various degrees of irritation. Complete denaturation and tissue sloughing occurred within one minute after exposure to dichlorodimethylsilane, within two to three minutes after exposure to methyltrichlorosilane, ethyltrichlorosilane, and dichlorodiethylsilane, and within 10 minutes after exposure to tetrachlorosilane.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Dilution: immediately dilute with 4 to 8 ounces (120 to 240 ml) of milk or water (not to exceed 4 ounces/120 ml in a child). Do not induce vomiting.
   Inhalation
Remove victim to fresh air; give artificial respiration if needed; call physician.
   Skin
Flush with water; obtain medical attention if burning has occurred.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
2435
Response guide
Hazard class
8
Packing Group
II
 
USCG CHRIS Code
EPS
 
Std. Transport #
4934245