Potassium Silicofluoride 98%min K2SiF6

Potassium Silicofluoride K2SiF6 CAS No. 16871-90-2

Synonyms	Potassium Hexafluorosilicate, Potassium Silicofluoride, Potassium Fluorosilicate, Potassium Fluosilicate
Molecular Formula	K₂SiF₆
Mol. Wt	220.26
Cas No.	16871-90-2
UN No.	2655
EMS No.	F-A, S-A
EINECS No.	240-896-2
Physical state	White crystal or powder.
Odor	Odorless and tasteless slightly acidic.
Solubility	Slightly soluble in water. It is soluble in hydrochloric acid, and its solubility increases slightly with the increase of temperature. Insoluble in alcohol.
Relative density	2.665 g/mL at 25 °C(lit.)
Regular package	25kg/bag, or according to customer's requirements.
Storage	Moisture sensitive. Keep container tightly closed in a dry and well-ventilated place. Do not store in glass.
Transportation	Hazardous chemical, UN No.: 2655, Hazard Class: 6.1, Packing Group: III

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FAQ:

1. What's your payment terms?

T/T AD or Irrevocable L/C.

2. What's your delivery time?

Usually we will arrange the shipment within 7 to 15 days.

3. How about the packing?

Usually we provide the packing as 25kg per bag, if you have special requirements on them, we will according to you.

4. How about the validity of the products?

According to the products you ordered.

5. What documents will you get?

Usually we provide Commerical Invoice, Packing List, Bill of loading, COA , and Origin certificate. If you have any special requirements, let us know.

6. What is loading port?

Usually the loading port is Shanghai, Ningbo, Guangzhou or Shenzhen.

The Quality Specification of Potassium Silicofluoride

Product Name	Potassium Silicofluoride
Molecular Formula	K₂SiF₆
Molecular Weight	220.26
Index Name	Index
K₂SiF₆	≥ 98%
Free Acid ( HF )	≤ 0.15%
Water Insoluble	≤ 0.5%
Fe	≤ 0.001%
Pb	≤ 0.5%
Cl	≤ 0.15%
SO₄	≤ 0.1%
H₂O	≤ 0.5%
Granularity ( +60 mesh )	≤ 90%

Potassium silicofluoride is commonly used in metal finishing, ceramics, and glass production.

It is also used as a source of fluoride for water fluoridation. Specific uses include:

1. Metal finishing

Potassium silicofluoride is used as an etchant for aluminum and its alloys in metal finishing.

2. Ceramics

Potassium silicofluoride is used as an ingredient in ceramic glazes to

improve the hardness and durability of the finished product.

3. Glass production

Potassium silicofluoride is used as a flux in glass production.

It helps to lower the melting point of silica and other ingredients,

allowing them to be melted at lower temperatures.

4. Water fluoridation

Potassium silicofluoride is also used in water fluoridation programs

as a source of fluoride. Fluoride is added to drinking water to help prevent tooth decay.

5. Pesticides and insecticides

Potassium silicofluoride is used in the manufacturing of pesticides and insecticides as

a source of fluoride ion. Fluoride ion has a toxic effect on many pests and insects,

which makes it an effective ingredient in these products. Potassium silicofluoride is used in

the manufacturing process to supply the required amount of fluoride ion to the pesticide

or insecticide mixture.

6. Aluminum production

Potassium silicofluoride is used in the aluminum production industry as a basic component

of synthetic cryolite, which is an important flux used to dissolve aluminum oxide.

Synthetic cryolite is made by the reaction of sodium aluminum fluoride with

potassium hydrogen fluoride or potassium silicofluoride.

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Potassium Fluorosilicate , Potassium Silicofluoride, 98%min, K2SiF6, CAS No. 16871-90-2