FCY 99% SSF Largest manufacturer in China for sodium fluorosilicate

1. sodium fluorosiliate 99% min for water treament,meet AWWA 2. export 1500mt/month to worldwide 3. CAS: 16893-85-9

Name: Sodium Fluorosilicate ,Sodium Silicofluoride,  

Formula: Na2SiF6

Molecular: 188.06

Execute standard: National standard/GB 23936-2009

Executive:

White crystalline powder,odorless, relative density: 2.679 g/cm3, hygroscopic.Soluble in ether, insoluble in alcohol. Decomposed in alkaline solution, forming NAF AND SiO2. In the searing heat(abpve 300°C),it is broken down into NaF and SiO4;toxic.

AWWA/NSF/UL Grade Portable Water Treatment

Chemical Analysis	Typical
Assay (Na2SiF6)	≥98.5%
Fluorine(F)	≥59.43%
Moisture as H2O	≤0.5%
Water Insoluble Matter	≤0.5%
Heavy Metals,as Lead (Pb)	50ppm Max

Specific impurity limits in milligrams per kilogram of Na2SiF6

Impurity	Limit-mg/kg	Impurity	Limit-mg/kg
Antomy	990	Mercury	346
Arsenic	495	Molybenum	3,465
Cadmium	198	Nickel	3,960
Chromium	2,475	Selenium	495
Lead	495

 

Physical Properties

 

Description: Dry crystalline non-hygroscopic salt, meeting AWWA StandardB-702,and the NSF/ANSI Standard 60 for Fluoride Fluorosiicate.

Specification Gravity (H2O=1):  2.679

Boiling Proint:  Decomposes at 500 °C (932 .F)  

Molecular Weight:  188.05

Solubility in Water:

          0.76 grams/100 ml of water @ 25°C    

          2.45 grams/100 ml of water @ 100 °C

Guaranteed Screens: 

          ≥89% through 40 mesh

          ≤25% through 325 mesh

Ph (1% Solution):  3.0-4.5

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