Silicon dioxide

Base Information

• Chemical Name: Silicon dioxide
• CAS No.: 7631-86-9
• Deprecated CAS: 108727-71-5,11139-72-3,11139-73-4,12125-13-2,122985-48-2,125623-17-8,126879-14-9,126879-30-9,126879-49-0,12737-36-9,12753-63-8,12765-74-1,127689-16-1,12774-28-6,127831-27-0,1340-09-6,136881-80-6,137263-03-7,139074-73-0,145686-91-5,146585-72-0,149779-02-2,152787-33-2,155552-25-3,155575-05-6,179046-03-8,185461-90-9,188357-77-9,206770-31-2,207868-97-1,37220-24-9,37241-25-1,37334-65-9,37340-45-7,37380-93-1,39336-66-8,39372-58-2,39409-25-1,39443-40-8,39456-81-0,50813-13-3,50926-93-7,50935-83-6,51542-57-5,51542-58-6,52350-43-3,53468-64-7,55599-33-2,56645-27-3,56731-06-7,60572-11-4,61673-46-9,62655-73-6,67167-16-2,70536-23-1,70563-35-8,78207-17-7,83589-56-4,83652-92-0,87501-59-5,89493-21-0,9049-77-8,97343-62-9,97709-14-3,107497-59-6,113384-41-1,136303-13-4,138860-82-9,145537-54-8,145808-77-1,152206-35-4,171264-18-9,172306-09-1,173299-41-7,184654-53-3,191289-29-9,203526-86-7,217643-58-8,231629-15-5,247900-77-2,250579-70-5,250579-78-3,264907-28-0,330152-64-2,341028-71-5,368432-40-0,402735-49-3,402828-37-9,402828-39-1,402828-40-4,70536-61-7,98226-40-5,98253-25-9,150633-20-8,761458-29-1,781662-69-9,865611-44-5,942129-91-1,1004994-79-9,1006727-26-9,1007355-41-0,1151767-34-8,1354383-62-2,1365618-91-2,1373553-98-0,1377807-27-6,1396528-08-7,573986-27-3,574743-92-3,636575-18-3,871110-01-9,895163-77-6,900794-70-9,910556-60-4,916674-46-9,102381-58-8,1065194-86-6,1262535-72-7,1364664-19-6,1367454-14-5,1384115-98-3,1431704-97-0,1431704-98-1,1431705-01-9,1675960-65-2,1678497-74-9,1844839-43-5,1848955-43-0,1933499-98-9,2098352-97-5,2098352-98-6,2098352-99-7,2098354-30-2,2135813-99-7,2148930-88-3,2170638-70-5,2174974-17-3,2174974-56-0,2215023-93-9,2215943-42-1,2226478-11-9,1206890-01-8,1259281-12-3,1474086-62-8,173358-69-5,2067262-90-0,2095803-93-1,2300155-82-0,2409669-48-1,2412595-05-0,2412795-58-3,2413104-54-6,2435623-01-9,2454600-76-9,736175-62-5,2699030-77-6,105269-70-3,1317-48-2,122304-48-7,122304-49-8,12425-26-2,1317-79-9,70594-95-5,87347-84-0,12414-70-9,1317-94-8,119573-97-6,37224-34-3,37224-35-4,55126-05-1,221007-06-3,942229-17-6,1355213-18-1,1417404-62-6,67256-35-3,1004994-79-9,1006727-26-9,1007355-41-0,107497-59-6,11139-72-3,11139-73-4,113384-41-1,1151767-34-8,12125-13-2,122985-48-2,125623-17-8,126879-14-9,126879-30-9,126879-49-0,12737-36-9,12753-63-8,12765-74-1,127689-16-1,12774-28-6,127831-27-0,1340-09-6,1354383-62-2,136303-13-4,1365618-91-2,136881-80-6,137263-03-7,1373553-98-0,1377807-27-6,138860-82-9,139074-73-0,1396528-08-7,145537-54-8,145686-91-5,145808-77-1,146585-72-0,149779-02-2,150633-20-8,152206-35-4,152787-33-2,155552-25-3,155575-05-6,171264-18-9,172306-09-1,173299-41-7,179046-03-8,184654-53-3,185461-90-9,188357-77-9,191289-29-9,203526-86-7,206770-31-2,207868-97-1,217643-58-8,231629-15-5,247900-77-2,250579-70-5,250579-78-3,264907-28-0,330152-64-2,341028-71-5,368432-40-0,37220-24-9,37241-25-1,37334-65-9,37340-45-7,37380-93-1,39336-66-8,39372-58-2,39409-25-1,39443-40-8,39456-81-0,402735-49-3,402828-37-9,402828-39-1,402828-40-4,50813-13-3,50926-93-7,50935-83-6,51542-57-5,51542-58-6,52350-43-3,53468-64-7,55599-33-2,56731-06-7,573986-27-3,574743-92-3,60572-11-4,61673-46-9,62655-73-6,636575-18-3,67167-16-2,70536-23-1,70536-61-7,70563-35-8,761458-29-1,781662-69-9,78207-17-7,83589-56-4,83652-92-0,865611-44-5,871110-01-9,87501-59-5,89493-21-0,895163-77-6,900794-70-9,9049-77-8,910556-60-4,916674-46-9,942129-91-1,97343-62-9,97709-14-3,98226-40-5,98253-25-9
• Molecular Formula: SiO2
• Molecular Weight: 60.0843
• Hs Code.: 2811221000
• European Community (EC) Number: 231-545-4,234-368-0,921-597-2,927-048-3
• UNII: ETJ7Z6XBU4
• DSSTox Substance ID: DTXSID1029677
• Nikkaji Number: J43.598H
• Wikipedia: Silica,Silicon dioxide,Onyx
• Wikidata: Q116269
• NCI Thesaurus Code: C29853,C44441,C791
• RXCUI: 9771,314826,1426646
• ChEMBL ID: CHEMBL3188292
• Mol file: 7631-86-9.mol

Synonyms:Silicon dioxide, chemically prepared;Silica (SiO2);Amorphous silica;Silica slurry;Silica, amorphous, fumed;Silicon dioxide (amorphous);

Chemical Property of Silicon dioxide

Chemical Property:

• Appearance/Colour: white crystals or powder
• Vapor Pressure: 13.3hPa at 1732℃
• Melting Point: >1600 °C(lit.)
• Refractive Index: 1.46
• Boiling Point: >100oC(lit.)
• PKA: 6.65-9.8[at 20 ℃]
• Flash Point: 2230 °C
• PSA: 34.14000
• Density: 2.2-2.6 g/mL at 25 °C
• LogP: -0.61840
• Storage Temp.: Refrigerator (+4°C)
• Sensitive.: Hygroscopic
• Solubility.: Practically insoluble in water and in mineral acids except hydrofluoric acid. It dissolves in hot solutions of alkali hydroxides.
• Water Solubility.: insoluble
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 2
• Rotatable Bond Count: 0
• Exact Mass: 59.966755773
• Heavy Atom Count: 3
• Complexity: 18.3

Purity/Quality:

99% ^*data from raw suppliers

Silicon dioxide acid washed ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xn, Xi
• Hazard Codes: Xn,Xi
• Statements: 36/37/38-36/37-22-43-52/53-36/38
• Safety Statements: 26-37/39-36-36/37/39-36/37-61

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Mineral Dusts -> Other Mineral Dusts
• Canonical SMILES: O=[Si]=O
• Recent ClinicalTrials: Efficacy and Safety of Neosil on Chronic Effluvium
• Recent EU Clinical Trials: Phase II, Double-blind, randomized, 1-way cross-over, to investigate the effectiveness of the combination of ascorbic acid (vitamin C) and tocopherol (vitamin E) versus placebo for the treatment of depressive disorders in elderly
• Recent NIPH Clinical Trials: Clinical trials on efficacy and safety of 3 novel combinations of Nobiletin, Kaempferia parviflora and Peucedanum japonicum for urine storage disorder
• Uses: ▼▲ 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 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. Silica (SiO2) (RI: 1.48) is mined from deposits of diatomaceous soft chalk-like rock (keiselghur). This is an important group of extender pigments, which is used in a variety of particle sizes. They are used as a flatting agent to reduce gloss of clear coatings and to impart shear thinning flow properties to coatings. They are relatively expensive. Silicon(IV) oxide, amorphous is used as carriers, processing aids, anti-caking and free-flow agents in animal feed. Defoamer applications such as paint, food, paper, textile and other industrial applications. Synthetic silicon dioxides are used as a rheology control agent in plastics. It is also used to manufacture adhesives, sealants and silicones. 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). SDS mixture of sodium alkyl sulfates consisting chiefly of sodium lauryl sulfate 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.

Technology Process of Silicon dioxide

There total 942 articles about Silicon dioxide which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 25.5%

aluminium carbide (1299-86-1) → aluminum oxide (1333-84-2,1344-28-1) + gibbsite + silica gel (112926-00-8,7631-86-9)

Guidance literature:

at low temp. formed amorphous Al4C3;

Reference yield:

indium(III) oxide + tetrachlorosilane (10026-04-7,53609-55-5) → silica gel (112926-00-8,7631-86-9) + indium(III) chloride (10025-82-8)

Guidance literature:

780-800°C in vac.; Two-fold vacuum sublimation with prior distilling off SiCl4.;

Reference yield:

tetrachlorosilane (10026-04-7,53609-55-5) + neodymium(III) oxide → neodymium trichloride (10024-93-8) + silica gel (112926-00-8,7631-86-9)

Guidance literature:

1000°C in vac.; distilling;

upstream raw materials:

tetrachlorosilane

water

tetramethylorthosilicate

ethenyltrimethylsilane

Downstream raw materials:

caprolactam

2-(hydroxyphenylmethyl)cyclohexan-1-one

4-{4-[3-(1, 3-Dioxo-1, 3-dihydroisoindol-2-yl)-propoxy]-2-methoxy-3,5,6-trimethylbenzoyloxy}-2-methoxy-3,5,6-trimethylbenzoic Acid

5-benzyloxy-1-pentanal

Refernces

• 1、 -. "Non-Cryogenic, Ammonia-Free Reduction of Aryl Compounds". . . Retrieved 2022/03/31.
• 2、 -. "CROSSLINKED ARTIFICIAL NUCLEIC ACID ALNA". . . Retrieved 2022/01/12.