Silica (Silicon dioxide) is a kind of acidic oxides, normal temperature is solid, chemical formula for the SiO ₂.
Silicon dioxide is insoluble in water, insoluble in acids, but soluble in hydrofluoric acid and hot concentrated phosphoric acid.
- Product Details
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Quick Details
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EINECS No.:
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231-130-8
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Place of Origin:
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Henan, China
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Product name:
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silica silicon dioxide china manufacturer powder amorphous
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Particle size:
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0nm, 50nm, 100-200nm, 500nm, 1um, etc
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Melting point:
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1610 °C(lit.)
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density:
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2.6 g/mL at 25 °C(lit.)
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MW:
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60.0843
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Boiling point:
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2230 °C
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Specific Gravity:
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2.2-2.6
Quick Details
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CAS No.:
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Silicon dioxide CAS 14808-60-7
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Purity:
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99.9% min
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MF:
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SiO2
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EINECS No.:
-
231-130-8
-
Place of Origin:
-
Henan, China
-
Product name:
-
silica silicon dioxide china manufacturer powder amorphous
-
Particle size:
-
0nm, 50nm, 100-200nm, 500nm, 1um, etc
-
Melting point:
-
1610 °C(lit.)
-
density:
-
2.6 g/mL at 25 °C(lit.)
-
MW:
-
60.0843
-
Boiling point:
-
2230 °C
-
Specific Gravity:
-
2.2-2.6
Product Description
silicon dioxide
Specification
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Silica(dry basis) %
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≥ 96
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Heating loss (105°C) %
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4.0-8.0
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Loss on ignition (1000±25°C)%
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≤7.0
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PH-value (10%aqueous solution)
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5.0-8.0
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DBP Oil Absorption Value cm3/g
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2.0-3.5
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45um sieve Residue %
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≤ 0.5
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Soluble salt (Na2SO4)%
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≤ 1.5
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Cu ，mg/kg
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≤ 30
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Mn ，mg/kg
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≤ 50
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Fe ， mg/kg
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≤300
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Average grain diameter d50 µm
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4-10
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Chemical properties is stable after reaction with water is acidic oxides, not general acid reaction with gaseous hydrogen fluoride and silica reaction gas tetrafluoride with hot strong alkali solution or molten alkali reacts with a variety of metal oxide silicate and water reaction to generate silicate used in the manufacture of quartz glass at high temperature refractory fiber optical instrument chemical vessels common glass, ceramic, etc. The properties of silicon dioxide inert, it is not with except fluorine hf halogen halide hydrogen sulfuric acid and nitric acid perchloric acid effect (except hot concentrated phosphoric acid).
Application
glass
Flat glass, float glass, glass products (glass cans, glass bottles, glass tubes, etc.), optical glass, glass fiber, glass
instruments, conductive glass, glass cloth and anti-ray special glass and other main raw materials
Flat glass, float glass, glass products (glass cans, glass bottles, glass tubes, etc.), optical glass, glass fiber, glass
instruments, conductive glass, glass cloth and anti-ray special glass and other main raw materials
Ceramics and refractories
The blank and glaze materials of porcelain, the raw materials of high silicon brick, ordinary silicon brick and silicon carbide
used in kiln
The blank and glaze materials of porcelain, the raw materials of high silicon brick, ordinary silicon brick and silicon carbide
used in kiln
metallurgical
Silicon metals, ferrosilicon alloys and aluminum alloys, etc. Raw materials or additives, fluxes
Silicon metals, ferrosilicon alloys and aluminum alloys, etc. Raw materials or additives, fluxes
building
Concrete, cementitious materials, road building materials, artificial marble, cement physical properties testing materials (i.e.,cement standard sand), etc
chemical
Raw materials such as silicon compounds and sodium silicate, fillers for sulfuric acid towers, amorphous silica powders
mechanical
Main raw materials for molding sand, abrasive materials (sandblasting, hard abrasive paper, sandpaper, emery cloth, etc.)
electronic
High purity monocrystalline silicon (non-metal), communication fiber, etc
Concrete, cementitious materials, road building materials, artificial marble, cement physical properties testing materials (i.e.,cement standard sand), etc
chemical
Raw materials such as silicon compounds and sodium silicate, fillers for sulfuric acid towers, amorphous silica powders
mechanical
Main raw materials for molding sand, abrasive materials (sandblasting, hard abrasive paper, sandpaper, emery cloth, etc.)
electronic
High purity monocrystalline silicon (non-metal), communication fiber, etc
Rubber, plastics
Packing (to improve wear resistance)
coating
Packing (can improve the weather resistance of paint)
Packing (to improve wear resistance)
coating
Packing (can improve the weather resistance of paint)
Packing & Delivery
Silicon dioxide SiO2 powder should be stored in dry, cool and sealing of the environment, can not be exposure to air, in addition should avoid the heavy pressure, according to ordinary goods transportation.
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