Sodium fluorosilicate

Sodium fluorosilicate Basic Information

Product name: Sodium fluorosilicate

 

CAS: 16893-85-9

 

Molecular Formula: Na2SiF6

 

Molecule weight: 188.055

 

 

Properties

Density: 2.68 g/mL at 25 ° C (lit.)

 

Precise mass: 187.94700

 

LogP 2.14040

 

Appearance: white crystalline powder

 

Refractive index: 1.310

 

Storage

1. It shall be stored in a ventilated, cool and dry warehouse

2. Do not store and transport together with food, feed and acid

 

Stability

1. Stable under normal temperature and pressure

Materials to avoid: moisture/moisture oxides. Soluble in ether and other solvents, insoluble in alcohol. The solubility in acid is higher than that in water. It is decomposed in alkali liquor to produce fluoride and silicon dioxide. After burning (above 300 ℃), it is decomposed into sodium fluoride and silicon tetrafluoride. Poisonous!

2. The solubility of sodium fluosilicate in acid is higher than that in water. It is decomposed in alkali liquor to produce fluoride and silicon dioxide. After burning (above 300 ℃), it decomposes to produce sodium fluoride and silicon tetrafluoride. Toxic

3. This product is toxic and has an irritant effect on respiratory organs. People who are poisoned by taking it orally will have severe gastrointestinal damage symptoms.

 

Safety information

Symbol GHS06

GHS06

Signal word Danger

Hazard statement: H301+H311+H331

Warning statement: P261-P280-P301+P310-P311

Personal protective equipment Eyeshields; Faceshields; Gloves; type P2 (EN 143) respirator cartridges

Hazard Code (Europe) T: Toxic

Risk Statement (Europe) R23/24/25

Safety statement (Europe) S26-S45

Dangerous goods transport code UN 2674 6.1/PG 3

WGK Germany 2

RTECS No. VV8410000

Packing grade III

Hazard category 6.1

 

Application

• It is used as insecticide, adhesive, ceramics, glass, enamel, wood anti-corrosion, medicine, water treatment, leather, rubber, sodium fluoride, etc
• It is used as an analytical reagent, antiseptic, bactericide, and also in the enamel industry
• Used as glass and enamel opacifying agent, aluminum alloy welding flux, wood anti-corrosion, insecticide, acid resistant cement moisture absorbent, drinking water fluoride agent, etc
• Used as opacifying agent and flux for glass and enamel, wood preservative, agricultural insecticide, moisture absorbent for acid resistant cement. It is used as coagulant in natural latex products, as additive in electrodeposited zinc, nickel and iron ternary coatings, and as plastic filler. In addition, it is also used for the fluorination treatment of pharmaceutical and drinking water, and the manufacture of artificial cryolite and sodium fluoride.
• Melt and decompose silicate. Alloy of beryllium and aluminum, enamel of ceramics, making opal glass, and treating wheat winter rust with sodium fluorosilicate, plant ash and water (1:2:300) can reduce the disease rate. Wool products are mothproof and wood preservation.