Ammonium fluorosilicate

Ammonium fluorosilicate
Names
	IUPAC name Ammonium hexafluorosilicate
	Other names Ammonium fluorosilicate; Ammonium fluosilicate; Ammonium silicofluoride
Identifiers
CAS Number	16919-19-0 ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	26182 ;
ECHA InfoCard	100.037.229
EC Number	240-968-3;
PubChem CID	28145;
RTECS number	VV7800000;
UNII	1X545W620G ;
UN number	2854
CompTox Dashboard (EPA)	DTXSID6047076 ;
	InChI InChI=1S/F6Si.2H3N/c1-7(2,3,4,5)6;;/h;21H3/q-2;;/p+2 Key: ITHIMUMYFVCXSL-UHFFFAOYSA-P ; InChI=1/F6Si.2H3N/c1-7(2,3,4,5)6;;/h;21H3/q-2;;/p+2 Key: ITHIMUMYFVCXSL-SKRXCDHZAK;
	SMILES F[Si-2](F)(F)(F)(F)F.[NH4+].[NH4+]; [NH4+].[NH4+].F[Si--](F)(F)(F)(F)F;
Properties
Chemical formula	(NH4)2[SiF6]
Appearance	White crystals
Density	2.0 g cm−3
Melting point	100 °C (212 °F; 373 K) (decomposes)
Solubility	dissolves in water and alcohol
Related compounds
Other cations	Hexafluorosilicic acid; Sodium fluorosilicate
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H311, H315, H319, H331, H335, H372
Precautionary statements	P260, P261, P264, P270, P271, P280, P301+P310, P302+P352, P304+P340, P305+P351+P338, P312, P314, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, P501
NFPA 704 (fire diamond)	3 0 0 ACID
Safety data sheet (SDS)	ChemicalBook MSDS
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Ammonium fluorosilicate (also known as ammonium hexafluorosilicate, ammonium fluosilicate or ammonium silicofluoride) has the formula (NH₄)₂SiF₆. It is a toxic chemical, like all salts of fluorosilicic acid. It is made of white crystals, which have at least three polymorphs and appears in nature as rare minerals cryptohalite or bararite.