Highlight:
sodium fluorosilicate
, sodium hexafluorosilicate
99% Purity Sodium Fluorosilicate Powder , Water Fluoridation Cement Na2sif6
99% Sodium silicate fluoride powder is useful in water fluoridation and additives in cements
►Description
Sodium Fluorosilicate is a fine, white, odorless, powdered solid. Toxic by
ingestion, inhalation and skin absorption.
|
Properties
|
|
Chemical formula
|
Na2[SiF6] |
|
Molar mass
|
188 g/mol |
|
Appearance
|
white granular powder |
|
Odor
|
odorless |
|
Density
|
2.7 g/cm3 |
| Solubility in water |
0.64 g/100 mL (20 °C)
1.27 g/100 mL (50 °C)
2.45 g/100 mL (100 °C) |
|
Solubility
|
insoluble in alcohol |
|
Refractive index (nD)
|
1.312 |
|
Structure
|
|
Crystal structure
|
hexagonal |
|
Hazards
|
|
Lethal dose or concentration (LD, LC):
|
| LDLo (lowest published) |
70 mg/kg (mouse, oral)
125 mg/kg (rabbit, oral)
|
|
Related compounds
|
| Other cations |
Ammonium hexafluorosilicate
Fluorosilicic acid |
| |
|
|
|
|
|
HAZARD CLASS
|
6.1
|
1. Appearance :White, crystalline powder.
2. Production method:Sodium fluorosilicate is made by neutralizing fluorosilicic
acid with sodium chloride or sodium sulfate.
3. Features:It is odorless and tasteless. Its relative density is 2.68;
it has moisture absorption capability. It can be dissolved in a solvent such as ethyl
ether but insoluble in alcohol. The solubility in acid is greater than that in water.
It can be decomposed in alkaline solution, generating sodium fluoride and silica.
After searing (300 ℃), it is decomposed into sodium fluoride and silicon
tetrafluoride. It is poisonous!
►Specification
| Na2Si6 |
Item |
Specification |
| Na2SiF6 |
≥99% |
| Fe |
≤0.02% |
| Loss of Weight on drying at 105°C |
≤0.40% |
| Insoluble in Water |
≤0.50% |
| Free Acid(HCL) |
≤0.15% |
| Heavy Metal(Pb) |
≤0.05%
|
►Chemical Properties
It appears as colorless hexagonal crystals. It is odorless and tasteless. It has
hygroscopicity. It can be dissolved in a solvent such as ethyl ether but insoluble in
alcohol with its solubility in acid is being greater than in the water.
►eference quality standards
105 ℃ Loss of weight upon drying% 0.17%
Sodium fluorosilicate (based on dry mass) 99.50
Free acid (calculated based on HCL) 0.0075
Water insoluble matter 0.12%
Heavy metals (Pb) content% <0.02
►Application
• Water fluoridation
• Additives in cement
• Opal glass
• Ore flotation
• Other fluoride chemical (like sodium fluoride, magnesium silicofluoride, cryolite,
aluminum fluoride)
• Productionin the field of laundry souring
• Manufacturing enamels
• Manufacturing coated papers
• Wood preservative
• Foam production
►Packing
50kg /plastic bag ,or customized
►MOQ
1-20 ton
►Storage characteristics
Treasury: ventilation, low-temperature and drying; store it separately from food and
acid.
Your message must be between 20-3,000 characters!
