ChemicalBook CAS DataBase List 16871-90-2

16871-90-2

Name	Potassium fluorosilicate
CAS	16871-90-2
EINECS(EC#)	240-896-2
Molecular Formula	F6K2Si
MDL Number	MFCD00040666
Molecular Weight	220.27
MOL File	16871-90-2.mol

Synonyms

POTASSIUM FLUOROSILICATE POTASSIUM HEXAFLUOROSILICATE POTASSIUM SILICOFLUORIDE dipotassiumhexafluorosilicate(2-) hexafluoro-silicate(2-dipotassium potassiumfluosilicate Silicate(2-),hexafluoro-,dipotassium dipotassium hexafluorosilicate POTASSIUM SILICAFLUORIDE POTASSIUM FLUOROSILICATE 95% MIN POTASSIUM HEXAFLUOROSILICATE POWDER Potassiumhexafluorosilicate,99% Potassium hexafluorosilicate 98% Potassiumhexafluorosilicate98% Kaliumhexafluorsilikat Potassium hexafluorosilicate, 99.999% (metals basis) Dipotassium hexafluorosilicate (a little fluorine) potassium flurosilicate

Chemical Properties

Appearance	White, odorless, crystalline powder. D 3.0. Slightly soluble in water; soluble in hydrochlo- ric acid.
Melting point	°Cd ec.)
Boiling point	dec
density	2.665 g/mL at 25 °C(lit.)
vapor pressure	0.01Pa
refractive index	1.3991
solubility	insoluble in ethanol
form	Powder
color	White
Specific Gravity	2.665
Odor	Odorless
Water Solubility	Slightly soluble in water.
Hydrolytic Sensitivity	0: forms stable aqueous solutions
Sensitive	Moisture Sensitive
Merck	14,7638
Solubility Product Constant (Ksp)	pKsp: 6.06
Exposure limits	ACGIH: TWA 2.5 mg/m3 NIOSH: IDLH 250 mg/m3
Cosmetics Ingredients Functions	ORAL CARE ANTIPLAQUE
InChI	1S/F6Si.2K/c1-7(2,3,4,5)6;;/q-2;2*+1
InChIKey	UUHPPUWEDCVPCO-UHFFFAOYSA-N
SMILES	[K+].[K+].F[Si--](F)(F)(F)(F)F
LogP	0.001
CAS DataBase Reference	16871-90-2(CAS DataBase Reference)
EPA Substance Registry System	16871-90-2(EPA Substance)

Safety Data

Symbol(GHS)	GHS06
Signal word	Danger
Hazard statements	H301+H311+H331
Precautionary statements	P280-P301+P310+P330-P302+P352+P312-P304+P340+P311
Hazard Codes	T,Xi
Risk Statements	R23/24/25:Toxic by inhalation, in contact with skin and if swallowed . less more
Safety Statements	S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . less more
RIDADR	UN 2655 6.1/PG 3
WGK Germany	2
RTECS	VV8400000
F	21
Hazard Note	Irritant
TSCA	Yes
REACH Registrations	Active
HazardClass	6.1
PackingGroup	III
HS Code	2826908090
Storage Class	6.1D - Non-combustible acute toxic Cat.3 toxic hazardous materials or hazardous materials causing chronic effects
Hazard Classifications	Acute Tox. 3 Dermal Acute Tox. 3 Inhalation Acute Tox. 3 Oral
Safety Profile	A poison by ingestion and subcutaneous routes. Ingestion can cause vomiting and dtarrhea. A strong irritant. Incompatible with hydrofluoric acid. When heated to decomposition it emits toxic fumes of SiF4, K3SiF7, and KF. less more

Raw materials And Preparation Products

Hazard Information

General Description

A white, odorless crystalline powder. Denser than water. Contact may cause irritation to skin, eyes, and mucous membranes. May be toxic by ingestion. Used to make other chemicals.

Reactivity Profile

POTASSIUM FLUOROSILICATE(16871-90-2) has weak oxidizing or reducing powers. Redox reactions can however still occur. The majority of compounds in this class are slightly soluble or insoluble in water. If soluble in water, then the solutions are usually neither strongly acidic nor strongly basic. These compounds are not water-reactive.

Air & Water Reactions

Slightly soluble in water.

Hazard

Toxic by ingestion and inhalation, strong irritant to tissue.

Health Hazard

Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways.

Chemical Properties

White, odorless, crystalline powder. D 3.0. Slightly soluble in water; soluble in hydrochlo- ric acid.

Uses

In the manufacture of opalescent glass, in porcelain enamels, in insecticides. Also used in aluminum metallurgy.

Uses

Potassium hexafluorosilicate is used in the production of porceleins. It is also used for the preservation of timber. It is involved in the manufacturing of ceramics, aluminum and magnesium smelting. In addition, it is used as an intermediate in the manufacturing of optical glass.

Industrial uses

Potassium fluorosilicate is a white to yellowish powder, poorly soluble in water (0.68% at 20 °C). Because of its poor solubility, it is not commonly used as a modifying reagent.

Purification Methods

Crystallise it several times from conductivity water (100mL/g) between 100o and 0o.

Material Safety Data Sheet(MSDS)

Questions And Answer

Spectrum Detail

Well-known Reagent Company Product Information

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16871-90-2

Chemical Properties

Safety Data

Raw materials And Preparation Products

Raw materials

Preparation Products

Hazard Information

General Description

Reactivity Profile

Air & Water Reactions

Hazard

Health Hazard

Fire Hazard

Chemical Properties

Uses

Uses

Industrial uses

Purification Methods

Material Safety Data Sheet(MSDS)

Questions And Answer

Description

References

Spectrum Detail

Well-known Reagent Company Product Information

Supplier

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