Phenyl dimethicone

  • 1,3-Diphenyl-1,1,3,3-tetramethyldisiloxane
  • Bis(dimethylphenylsilyl) ether
  • Bis(dimethylphenylsilyl) oxide
  • sym-Diphenyltetramethyldisiloxane
  • 1,1,3,3-Tetramethyl-1,3-diphenyldisiloxane
Formula
C16H22OSi2
Structure
Description
Clear, colorless liquid.
Uses
Component of lotions and creams.

Registry Numbers and Inventories.
CAS
56-33-7
EC (EINECS/ELINCS)
200-265-4
36/37/38
RTECS
JM9236000
RTECS class
Reproductive Effector
Beilstein/Gmelin
2943229
Beilstein Reference
4-16-00-01475
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed

Properties.
Formula
C16H22OSi2
Formula mass
286.56
Density
0.98 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.518

Hazards and Protection.
Storage
Keep tightly closed. Store in a cool dry place.
Protection
Wear respirator, chemical safety goggles, rubber boots, and heavy rubber gloves.
Respirators
Government approved respirator.
Small spills/leaks
Cover with dry lime or soda ash, pick up, keep in a closed container, and hold for waste disposal. Ventilate area and wash spill site after material pickup is complete.
Incompatibilities
Avoid contact with strong oxidizing agents.
Decomposition
Carbon monoxide, Carbon dioxide, Sulfur oxides.

Fire.
Flash Point,°C
156
Fire fighting
Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes. Extinguish using water spray. Carbon dioxide, dry chemical powder, or appropriate foam.
Combustion products
Emits toxic fumes under fire conditions.

Health.
Exposure effects
Vapor or mist is irritating to the eyes, mucous membranes, and upper respiratory tract. May be harmful by inhalation, ingestion, or skin absorption.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
In case of contact, immediately wash skin with soap and copious amounts of water.
   Eyes
In case of contact, immediately flush eyes with copious amounts of water for at least 15 minutes.

Transport.