Fumed Silica

$24 - $699

Price

Brand	Packaging	Price	Product name
Medical Isotopes, Inc. 72334	25g	$625	SyntheticAmorphousSilica
Sigma-Aldrich 381276	100g	$45.1	Silica
Sigma-Aldrich S5505	100g	$55.7	Silica, fumed
Sigma-Aldrich S5130	100g	$87.7	Silica, fumed
Sigma-Aldrich S5505	500g	$90.2	Silica, fumed
Sigma-Aldrich 381276	500g	$91.6	Silica
Sigma-Aldrich S5130	25g	$71	Silica, fumed
Sigma-Aldrich S5130	500g	$105	Silica, fumed
Strem Chemicals 14-6300	1g	$106	High Surface area Silica nanoparticles, small, particle size ~130-190 nm, surface area ~380 m2/g, (KCC-1 S1)
Strem Chemicals 93-1434	500g	$77	Silicon(IV) oxide, 99+%, 0.012 micron (fumed colloidal silica)

Melting point	>1600°C
Density	2.3 lb/cu.ft at 25 °C (bulk density)(lit.)
refractive index	n20/D 1.46(lit.)
solubility	Practically insoluble in organic solvents, water, and acids, except hydrofluoric acid; soluble in hot solutions of alkali hydroxide. Forms a colloidal dispersion with water. For Aerosil, solubility in water is 150 mg/L at 258℃ (pH 7).
form	powder
Specific Gravity	2.2
Hydrolytic Sensitivity	5: forms reversible hydrate
InChI	InChI=1S/O2Si/c1-3-2
InChIKey	VYPSYNLAJGMNEJ-UHFFFAOYSA-N
SMILES	[Si](=O)=O
CAS DataBase Reference	112945-52-5(CAS DataBase Reference)
EPA Substance Registry System	Silica, amorphous, fumed, cryst.-free (112945-52-5)