Silicon dioxide

Synonym(s):Silica;Silicon dioxide;Silica gel;Quartz;SBA-15

CAS NO.：7631-86-9
Empirical Formula: O2Si
Molecular Weight: 60.08
MDL number: MFCD00148343
EINECS: 231-545-4
SAFETY DATA SHEET (SDS)
Update Date: 2024-05-31 17:33:32

What is Silicon dioxide?

The Uses of Silicon dioxide

Silicon(IV) oxide, amorphous is used as carriers, processing aids, anti-caking and free-flow agents in animal feed. Defoamer applications such as paint, food, paper, textile and other industrial applications. Synthetic silicon dioxides are used as a rheology control agent in plastics. It is also used to manufacture adhesives, sealants and silicones.

Background

Silicon dioxide, or silica, is an oxide of silicon with the chemical formula SiO2. It is found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite as transparent and tasteless crystals. Inhalation of fine crystals is toxic to humans leading to respiratory toxicity. In powdered food products and pharmaceutical tablets, silicon dioxide is added as a flow agent to absorb water. Colloidal silica is also used as a wine, beer, and juice fining agent or stabilizer.

What are the applications of Application

Colloidal silica, 30% susp. in H2O is a sodium aluminate stabilizer

Metabolism

Not Available

Properties of Silicon dioxide

Melting point:	>1600 °C(lit.)
Boiling point:	>100 °C(lit.)
Density	2.2-2.6 g/mL at 25 °C
Flash point:	2230°C
storage temp.	2-8°C
solubility	Practically insoluble in water and in mineral acids except hydrofluoric acid. It dissolves in hot solutions of alkali hydroxides.
form	suspension
color	White to yellow
Water Solubility	insoluble
Sensitive	Hygroscopic

Safety information for Silicon dioxide

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H317:Sensitisation, Skin H412:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P272:Contaminated work clothing should not be allowed out of the workplace. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P333+P313:IF SKIN irritation or rash occurs: Get medical advice/attention.