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7631-86-9 Suppliers

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Product FOB Price Min.Order Supply Ability Supplier
Cas No: 7631-86-9
USD $ 1.0-1.0 / Kilogram 1 Kilogram 1-500 Metric Ton/Year Chemwill Asia Co., Ltd. Contact Supplier
Silicon dioxide
Cas No: 7631-86-9
USD $ 3.0-3.0 / Kilogram 1 Kilogram 1-100 Metric Ton/Month Hangzhou Dayangchem Co., Ltd. Contact Supplier
Cas No: 7631-86-9
No Data No Data 1 Metric Ton/Year Cerametek Materials(ShenZhen)Co., Ltd. Contact Supplier
Fresh In Stock:Fumed Silica A-380 with BEST PRICE
Cas No: 7631-86-9
USD $ 1.0-1.0 / Metric Ton 1 Metric Ton 1000 Metric Ton/Day Scale Chemical Corporation Contact Supplier
Silicon Dioxide for feed additives and Pharmaceuticals
Cas No: 7631-86-9
USD $ 3600.0-3600.0 / Metric Ton 500 Metric Ton 30 Metric Ton/Day Xinxiang Yellow River Fine Chemical Industry Co., Ltd. Contact Supplier
Silicon dioxide
Cas No: 7631-86-9
No Data 1 Metric Ton Metric Ton/Day HUBEI RISON CHEMICAL CO.,LTD. Contact Supplier
Silicon dioxide
Cas No: 7631-86-9
No Data 1 Kilogram 10 Metric Ton/Day Chungking Joyinchem Co., Ltd. Contact Supplier
Silicon dioxide CAS NO.7631-86-9
Cas No: 7631-86-9
USD $ 1.0-3.0 / Kilogram 1 Kilogram 10 Kilogram/Day Hebei yanxi chemical co.,LTD. Contact Supplier
Silicon dioxide CAS NO.7631-86-9
Cas No: 7631-86-9
No Data 10 Gram 100 Metric Ton/Month Hubei Jusheng Technology Co., Ltd., Contact Supplier
High purity Silicon dioxide with high quality and best price cas:7631-86-9
Cas No: 7631-86-9
USD $ 7.0-35.0 / Kilogram 1 Kilogram 99999 Kilogram/Year Hangzhou Dingyan Chem Co., Ltd Contact Supplier

7631-86-9 Usage

Chemical Properties

white crystals or powder


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.

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.


SDS mixture of sodium alkyl sulfates consisting chiefly of sodium lauryl sulfate


ChEBI: A silicon oxide made up of linear triatomic molecules in which a silicon atom is covalently bonded to two oxygens.


Functionalized RAFT agent for controlled radical polymerization; especially suited for the polymerization of styrene; acrylate and acrylamide monomers. Azide group can be used to conjugate to a variety of alkyne-functionalized biomolecules. Chain Transfer Agent (CTA).


Industry Application Role/benefit
Food Powdered foods, such as salt, many spices, etc. Ant-caking agent/ when added to a mixture, prevents its ingredients from binding together
Nutritional health food supplements Source of silicon/maintain healthy strong bones and joints and minimizes aluminum effects on the body
Wine, beer and juice Fining agent
Chemical manufacture Manufacture of silicon compounds and sodium silicate Raw material
Construction Production of portland cement Raw material
Sand casting Main ingredient/high melting point
Glass High purity silica glass Raw material/high temperature and corrosion resistance
Domestic glass and optical devices Essential component
Ceramics Manufacture of ceramic glaze Main constituents/forms glass when heated to bind others ingredients together
Metallurgy Manufacture of silicon alloys Raw material or additive
Pharmaceutical Drug tablets making Flow agent/aids powder flow when tablets are formed
Preventing Alzheimer’s disease Effective components/minimizes aluminum effects on the body which may cause Alzheimer’s disease
Electronics Fiber optic cables Raw material/high level of heat conductivity and low rate of transmission loss
Wire insulation Raw material/high melting point and good insulating property
Semi-conductors Source of silicon
Piezoelectric transducer Main component/can convert mechanical energy to electrical energy and vice-versa
Others Refractory materials Main component/high melting point and high shock resistance
Rubber and plastics Additive/improves wearing capacity
DNA Extraction Source of silicon/has binding properties which help to isolate the strands of DNA
Manufacture of silica gel Source of silicon/hygroscopic property
Defoaming Defoamer component
Silica-based aerogel Source of silicon
Hydraulic fracturing Thickening agent

Purification Methods

Purification of silica for high technology applications uses isopiestic vapour distillation from concentrated volatile acids and is absorbed in high purity water. The impurities remain behind. Preliminary cleaning to remove surface contaminants uses dip etching in HF or a mixture of HCl, H2O2 and deionised water [Phelan & Powell Analyst 109 1299 1984].

7631-86-9 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Aldrich (421553)  Silica   7631-86-9 421553-1L 796.77CNY Detail
Aldrich (420840)  LUDOX®AS-40colloidalsilica  40 wt. % suspension in H2O 7631-86-9 420840-4L 1,200.42CNY Detail
Aldrich (420840)  LUDOX®AS-40colloidalsilica  40 wt. % suspension in H2O 7631-86-9 420840-1L 469.17CNY Detail
Aldrich (420832)  LUDOX®AS-30colloidalsilica  30 wt. % suspension in H2O 7631-86-9 420832-1L 386.10CNY Detail
Aldrich (420778)  LUDOX®TM-50colloidalsilica  50 wt. % suspension in H2O 7631-86-9 420778-4L 1,422.72CNY Detail
Aldrich (420778)  LUDOX®TM-50colloidalsilica  50 wt. % suspension in H2O 7631-86-9 420778-1L 475.02CNY Detail
Aldrich (420786)  LUDOX®TM-40colloidalsilica  40 wt. % suspension in H2O 7631-86-9 420786-18L 4,235.40CNY Detail
Aldrich (420786)  LUDOX®TM-40colloidalsilica  40 wt. % suspension in H2O 7631-86-9 420786-4L 1,440.27CNY Detail
Aldrich (420786)  LUDOX®TM-40colloidalsilica  40 wt. % suspension in H2O 7631-86-9 420786-1L 448.11CNY Detail
Aldrich (420859)  LUDOX®TMAcolloidalsilica  34 wt. % suspension in H2O 7631-86-9 420859-18L 5,012.28CNY Detail
Aldrich (420859)  LUDOX®TMAcolloidalsilica  34 wt. % suspension in H2O 7631-86-9 420859-4L 1,577.16CNY Detail
Aldrich (420859)  LUDOX®TMAcolloidalsilica  34 wt. % suspension in H2O 7631-86-9 420859-1L 524.16CNY Detail



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017


1.1 GHS Product identifier

Product name silicon dioxide

1.2 Other means of identification

Product number -
Other names Silicon dioxide

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:7631-86-9 SDS

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