n-Octyltriethoxysilane

  • A 137
  • Dynasylan-OCTEO
  • Octyltriethoxysilane
  • Prosil-9234
  • Prosil-9202
Formula
C14H32O3Si
Structure
Description
Colorless liquid. Alcohol-like odor.
Uses
Coupling agent.

Registry Numbers and Inventories.
CAS
2943-75-1
EC (EINECS/ELINCS)
220-941-2
EC Class
irritant
R 36/38
RTECS
VV6695500
RTECS class
Other
Beilstein/Gmelin
2325287
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C14H32O3Si
Formula mass
276.50
Melting point, °C
-40
Boiling point, °C
265
Vapor pressure, mmHg
0.75 (20 C)
Density
0.8515 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.42 (20 C)

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Protection
Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container.
Disposal code
3
Stability
Stable under normal shipping and handling conditions.
Incompatibilities
Water, oxidizing agents, acids, bases, moisture.
Decomposition
Carbon monoxide, carbon dioxide, silicon oxide.

Fire.
Flash Point,°C
109
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Use foam, dry chemical, or carbon dioxide.

Health.
Exposure effects
Prolonged or repeated skin contact may cause defatting and dermatitis.
   Ingestion
May cause irritation of the digestive tract. May be harmful if swallowed.
   Inhalation
Causes respiratory tract irritation. May be harmful if inhaled.
   Skin
Causes skin irritation. May be harmful if absorbed through the skin.
   Eyes
Causes eye irritation. Causes redness and pain. Several cases have been reported where poisoning caused swelling of the eyelids, delerium, blurred vision and hallucinations.

First aid
 
   Ingestion
Get medical aid. Wash mouth out with water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
HS Code
2931 00 95