Precipitated silica

  • Silica, amorphous, precipitated and gel
Formula
SiO2
Description
Odorless colorless to white solid

Registry Numbers and Inventories.
CAS
112926-00-8
RTECS
VV7315000
RTECS class
Tumorigen
Beilstein/Gmelin
11462 (G)
Canada DSL/NDSL
DSL
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
O2Si
Formula mass
60.08
Melting point, °C
1625
Density
2.21 g/cm3
Thermal expansion
0.00000853/K

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a dry area.
Handling
Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
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
Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.
Stability
Stable under normal shipping and handling conditions.
Incompatibilities
Strong oxidizing agents.
Decomposition
No data available.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use agent most appropriate to extinguish fire.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure effects
Prolonged exposure to respirable crystalline quartz may cause delayed lung injury/fibrosis (silicosis).
   Ingestion
May cause irritation of the digestive tract.
   Inhalation
Dust is irritating to the respiratory tract.
   Skin
Dust may cause mechanical irritation.
   Eyes
Dust may cause mechanical irritation.

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

Transport.