Silicon dioxide CAS#7631-86-9
Silicon dioxide, commonly known as silica, is a naturally occurring compound found in quartz and sand. It is a primary component of most rocks and is widely used in various industries due to its high thermal stability, chemical inertness, and optical clarity. In chemical applications, it is valued for its abrasive, refractory, and adsorptive properties, making it essential in products like glass, ceramics, and electronics.
Silicon dioxide CAS#7631-86-9
| Silicon dioxide Chemical Properties |
| Melting point | >1600???C(lit.) |
| Boiling point | >100???C(lit.) |
| density | 2.2-2.6?g/mL?at 25???C |
| 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 |
| PH | 5-8 (100g/l, H2O, 20??)(slurry) |
| Odor | at 100.00?%. odorless |
| Resistivity | 1??10*20 (??/?̦?.cm) |
| Water Solubility | insoluble |
| Hydrolytic Sensitivity | 6: forms irreversible hydrate |
| Sensitive | Hygroscopic |
| 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) |
| Safety Information |
| Hazard Codes | Xn,Xi |
| Risk Statements | 36/37/38-36/37-22-43-52/53-36/38 |
| Safety Statements | 26-37/39-36-36/37/39-36/37-61 |
| OEB | B |
| OEL | TWA: 6 mg/m3 |
| HS Code | 2811221000 |
| Toxicity | LC inhalation in rat: > 200gm/m3/1H |
| IDLA | 3,000 mg/m3 |
Related Products
Carbon is a fundamental element found in all organic life and a key component of many inorganic materials. It is known for its ability to form long chains and complex structures, which makes it the basis of various compounds, including diamond, graphite, and fullerenes. Carbon is used in a wide range of applications, from manufacturing steel and other alloys to being a key element in batteries and as a pigment in inks and paints.
Chemical Name: Imazalil Sulfate
CAS No.: 58594-72-2
Molecular Formula: C14H14Cl2N2O.H2SO4
Molecular Weight: 395.26
Appearance: Solid
Product name:HYDROXYPROPYL GUAR HYDROXYPROPYLTRIMONIUM CHLORIDE
Purity:99%
Appearance:Light Yellow Powder
Package:Customized according to customer needs.
Sample:Available
Chemical Name: Zinc citrate
Synonyms: Zinc citrate trihydrate
CAS No.: 546-46-3
Molecular Formula: C6H8O7Zn
Molecular Weight: 257.5
Appearance: White powder
Bentonite, sodium-activated, is a type of clay rich in montmorillonite minerals, which undergoes a process to increase its sodium content. This alteration enhances its swelling and adsorptive properties, making it a highly effective thickener and gel-forming agent. Sodium bentonite is widely used in drilling muds, foundry sands, and as a binder in various industrial applications. Its ability to absorb liquids and form stable gels makes it invaluable in cosmetics, agriculture, and as a component in the manufacturing of ceramics and paper products.
Aluminum chlorohydrate is an inorganic compound often used as a coagulant in water treatment processes. It is also known for its astringent properties and is utilized in various personal care products, such as antiperspirants and deodorants, due to its ability to temporarily close sweat glands. It enhances the viscosity and stability of formulations, making it a valuable ingredient in cosmetics and pharmaceuticals.
Kaolin, also known as china clay, is a naturally occurring hydrated aluminum silicate mineral. It is a soft, white, plastic clay that is widely used in ceramics, papermaking, and as a pigment in paints, coatings, and plastics. Kaolin is valued for its fine particle size, purity, and ability to improve the brightness and opacity of materials. Its inert nature and high refractive index make it ideal for various industrial applications, including cosmetics and pharmaceuticals.
Calcium carbonate, with the chemical formula CaCO3, is an inorganic compound found in nature as calcite, aragonite, and vaterite. It is a white solid that is insoluble in water but soluble in acid. Widely used as a filler and coating pigment in paper and plastics, calcium carbonate also serves as a primary ingredient in the production of cement and lime. Known for its high purity and chemical stability, it is utilized in pharmaceuticals, food additives, and as a dietary calcium supplement. Its versatility makes it an essential component in various industrial applications.
Chemical Name: Potassium Castorate
CAS No.: 8013-05-6
Molecular Formula: C57H107K3O12
Molecular Weight: 1101.74718
Appearance: Yellow Liquid
Chemical Name: STODDARD SOLVENT
CAS No.: 64742-88-7
Appearance: Colorless or Light Yellow Liquid
Copper(II) sulfate, with the chemical formula CuSO4, is a blue crystalline compound that is soluble in water. It is commonly used in agriculture as a fungicide and in the textile industry as a dye fixative. Copper(II) sulfate is also utilized in the manufacture of pigments, batteries, and as an algaecide in water treatment. Its distinctive blue color and reactivity make it a versatile chemical in various industrial applications, including chemical analysis and electroplating.
Chemical Name: Ammonium Iron(II) Sulfate
Synonyms: Diammonium iron bis(sulphate); iron (ii) ammonium sulfate
CAS No.: 10045-89-3
Molecular Formula: FeH5NO4S
Molecular Weight: 170.95
