Silicon dioxide Basic information

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:	#N/A;Siloxanes;Inorganics;Silica Gels;organofunctional catalyst support;metals scavenging agent;molecular sieves;metal oxide;Mesoporous Materials;Ceramic Science;Materials Science;Metal &;Nanomaterials;New Products for Materials Research and Engineering
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
refractive index	1.46
Fp	2230°C
storage temp.	Refrigerator (+4°C)
form	suspension
color	White to yellow
PH	5-8 (100g/l, H2O, 20℃)(slurry)
Water Solubility	insoluble
Sensitive	Hygroscopic
Merck	14,8493
Stability:	Stable.
CAS DataBase Reference	7631-86-9(CAS DataBase Reference)
NIST Chemistry Reference	Silicon(iv) oxide(7631-86-9)
EPA Substance Registry System	Silica(7631-86-9)

General Description

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.

Uses

manufacture of glass, water glass, refractories, abrasives, ceramics, enamels; decolorizing and purifying oils, petroleum products, etc.; in scouring- and grinding-compounds, ferrosilicon, molds for castings; as anticaking and defoaming agent.

Superiority：

fast and safe delivery

1) parcel can be sent out in 24 hours after payment.tracking number available

2) secure and discreet shipment.various transportation methods for your choice.

3) customs pass rate ≥99%

4) we have our own agent/remailer/distributor who can help us ship our products very fast and safe,

Crovell Biotech (Hebei) Co., Ltd.

Thanks for your considering of Crovell Biotech (Hebei) Co., Ltd..   Crovell is a fast growing intermediates company,Which located in Shijiazhuang,Hebei Province.

Crovell is specialized in pharmaceutical intermediates, veterinary drug intermediates and dyes intermediates,such as phenylacetamide, dimethylamine hcl, benzyl chloride etc., Crovell also supply various industrial chemicals for customers, such as citric acid,potassium chloride etc.

After ten years development,Crovell has become a Diversified development company,not only involves in chemicals, but also real estate ,clothes ,agricultural products and so on.

So far, Crovell has business in more than 35 countries,most big customers come from europe and America, because among the suppliers in china,Crovell can always make the product quality best, some of the products from Crovell can reach the purity of 99.9+, such as 2-phenylacetamide. This is the important reason for customers who choosing Crovell.

In future, Crovell must become to a more important trade bridge for china and foreign countries especially in pharmaceutical industries.