< >

Silicon Dioxide CAS#7631 - 86 - 9

Silicon Dioxide CAS#7631 - 86 - 9 Promotion Season Now in Store and Free Sample for Testing with Factory Price

Chemical Name：Silicon Dioxide

CAS No.:77631 - 86 - 9

Molecular Formula：O2Si

Molecular weight:60.08

Sample: Available

Mode of Transportation

1. By Air, fast but expensive.

2. By Sea, usual and economy.

3. By Train, suit for middle Asia countries.

4. By Express, suit for small package.

We only provide highest quality goods available, accompanied by after support!

Contact Now E-Mail Telephone WhatsApp

Product Details

Silicon Dioxide CAS#7631 - 86 - 9

Silicon dioxide occurs almost everywhere on earth. It is one of the most important and abundant oxides on earth, constituting about 60% weight of the earth’s crust as silica itself or in combination with other metal oxides in silicates. It commonly is found as sand in the vast ocean and river shores, their beds, deserts, rocks, and minerals.

Silicon dioxide exists in several structural forms: polymorphic crystalline silica, synthetic quartz crystals, amorphous silica, and vitreous silica. This classification is not complete as there are other forms of silica synthesized for specialized applications.

Silicon Dioxide CAS#7631 - 86 - 9

Product Name:	Silicon dioxide
Synonyms:	SILICA GEL 60 PF254 FOR PREPARATIVE LAYE;LICHROSORB SI 100 (10 MYM) 10 G;TLC-SILICA GEL 60 GF254 MEAN PARTICLE SI;LICHROSORB SI 100 (10 MYM) 100 G;SEA SAND EXTRA PURE 5 KG;SILICA GEL 60 GF254 FOR THIN-LAYER CHROM;SILICA GEL 60 PF254 + 366 FOR PREPARATIV;SEA SAND EXTRA PURE 25 KG
CAS:	7631-86-9
MF:	O2Si
MW:	60.08
EINECS:	231-545-4
Product Categories:	Inorganics;organofunctional catalyst support;Mesoporous Materials;Ceramic Science;Materials Science;Metal &;Nanomaterials;New Products for Materials Research and Engineering;molecular sieves;metal oxide;metals scavenging agent;Silica Gels;Siloxanes;7631-86-9
Mol File:	7631-86-9.mol

Silicon dioxide Chemical Properties

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	14,8493
Exposure limits	NIOSH: IDLH 3000 mg/m3; TWA 6 mg/m3
Stability:	Stable.
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)

Product Usage

Silica is also known as silicone dioxide. Silica has a variety of applications: to control a product’s viscosity, add bulk, and reduce a formulation’s transparency. It can also function as an abrasive. In addition, it can act as a carrier for emollients, and may be used to improve a formulation’s skin feel. Spherical silica is porous and highly absorbent, with absorption capabilities roughly 1.5 times its weight. A typical claim associated with silica is oil control. It is found in sunscreens, scrubs, and wide range of other skin care, makeup, and hair care preparations. It has been successfully used in hypoallergenic and allergy-tested formulations.

Factory and Equipment Show

Factory and Equipment Show