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Name: Silicon dioxide CAS#7631-86-9
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Silicon dioxide CAS#7631-86-9

Basic Information

Stable and reliable performance: It has stable physical and chemical properties, acid, alkali, high temperature and corrosion resistance, suitable for diverse production scenarios.

Efficient and versatile functions: It has excellent adsorption, anti-caking, dispersing, thickening and thixotropic properties with good powder fluidity.

Safe and compliant: Non-toxic and non-irritating, environmentally friendly, compliant with standards for food, pharmaceutical and daily chemical industries.

Standard storage & operation: Store in sealed, dry, cool and ventilated conditions; keep away from corrosive materials. Wear dust-proof protective equipment, avoid moisture and damage, and use within shelf life.

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product description

Product Description of Silicon dioxide CAS#7631-86-9

Silicon dioxide is an inorganic non-metallic powder material. It is fine odorless and tasteless white powder under normal condition. It owns stable physical and chemical properties, hardly reacts with common acid and alkali, and keeps stable during storage.

Product Application of Silicon dioxide CAS#7631-86-9

Widely used in multiple industries, silicon dioxide can be used as anticaking agent, flow aid, adsorbent, thickener, reinforcing filler and matting agent. It is applied in food processing to prevent powder agglomeration, in pharmaceuticals as a safe pharmaceutical excipient, in rubber and plastic products to improve hardness and wear resistance, in daily cosmetics to adjust material texture, in feed industry to maintain material looseness, and in coatings and inks for thickening and matting to optimize coating molding effects, covering various industrial and civil production fields.

Product Information

Parameters

Melting point	>1600 °C(lit.)
Boiling point	>100 °C(lit.)
density	2.2-2.6 g/mL at 25 °C
bulk density	200-800kg/m3
vapor pressure	13.3hPa at 1732℃
refractive index	1.46
Fp	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
pka	6.65-9.8[at 20 ℃]
Specific Gravity	2.2
color	White to yellow
Odor	at 100.00%. odorless
PH	5-8 (100g/l, H2O, 20℃)(slurry)
Resistivity	1∞10*20 (ρ/μΩ.cm)
Water Solubility	insoluble
Sensitive	Hygroscopic
Hydrolytic Sensitivity	6: forms irreversible hydrate
Crystal Structure	Trigonal
Merck	148,493
Exposure limits	NIOSH: IDLH 3000 mg/m3; TWA 6 mg/m3
Stability:	Stable.
Cosmetics Ingredients Functions	BULKING
	ABSORBENT
	OPACIFYING
	ABRASIVE
	VISCOSITY CONTROLLING
	ANTICAKING
InChI	1S/O2Si/c1-3-2
InChIKey	VYPSYNLAJGMNEJ-UHFFFAOYSA-N
SMILES	[Si](=O)=O
CAS DataBase Reference	7631-86-9(CAS DataBase Reference)
NIST Chemistry Reference	Silicon(iv) oxide(7631-86-9)
IARC	3 (Vol. Sup 7, 68) 1997
EPA Substance Registry System	Silica (7631-86-9)
ECETOC JACC REPORT	Silicon dioxide (7631-86-9)

Safety Information

Hazard Codes	Xn,Xi
Risk Statements	36/37/38-36/37-22-43-52/53-36/38
Safety Statements	26-37/39-36-36/37/39-36/37-61
OEB	B
OEL	TWA: 6 mg/m3
WGK Germany	nwg
RTECS	VV8853000

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