High Purity Sodium Fluorosilicate | Water Treatment Manufacture

Sodium fluorosilicate appears as white crystal, crystalline powder, or colorless hexagonal crystals. 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 an ethyl ether but is insoluble in alcohol. The solubility in acid is more excellent than that in water. It can be decomposed in an alkaline solution, generating sodium fluoride and silica. After searing (300 ℃), it is decomposed into sodium fluoride and silicon tetrafluoride.

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Flammability And Hazard Characteristics

It is non-combustible with fire releasing toxic fluoride and sodium oxide, silica smoke; when it is reacted with an acid, it can generate poisonous hydrogen fluoride.

Storage Characteristics

Treasury: ventilation, low-temperature, and drying; store it separately from food and acid.

Technical Specification

Items	Index
Sodium fluorosilicate (%)	99.0 MIN
Fluorine (as F, %)	59.7 MIN
Water insoluble matter	0.50 MAX
Loss of weight (105℃)	0.30 MAX
Free acid (as HCl, %)	0.10 MAX
Chloride (as Cl-, %)	0.10 MAX
Sulphate (as SO₄^2-, %)	0.25 MAX
Iron (as Fe, %)	0.02 MAX
Heavy metal (as Pb, %)	0.01 MAX
Particale Size Distribution:
Passing through 420 micron (40 mesh) sieve	98 MIN
Passing through 250 micron (60 mesh) sieve	90 MIN
Passing through 150 micron (100 mesh) sieve	90 MIN
Passing through 74 micron (200 mesh) sieve	50 MIN
Passing through 44 micron (325 mesh) sieve	25 MAX
Packing	25 kg plastics bag

Toxicity

This product is toxic with a stimulating effect on the respiratory organ. People of mistakenly oral poisoning will get severe symptoms of damage to the gastrointestinal tract with the lethal dose being 0.4~4g. During the working of the operator, they should wear the necessary protective equipment to prevent poisoning. Production equipment should be sealed and the workshop should be well ventilated.

Water Treatment Sodium Silicofluoride, Sodium Fluorosilicate, SSF, Na2SiF6.

Sodium fluorosilicate can be called sodium silicofluoride, or sodium hexafluorosilicate, SSF. The price of sodium fluorosilicate can be based on product capacity, and the purity that the buyer need.