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Ammonium hexafluorosilicate

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Ammonium hexafluorosilicate

EINECS 240-968-3
CAS No. 16919-19-0 Density 2.01 g/cm3
PSA 0.00000 LogP 2.89280
Solubility soluble in water Melting Point °Cd ec.)
Formula F6Si.2H4N Boiling Point
Molecular Weight 178.15 Flash Point
Transport Information UN 2854 6.1/PG 3 Appearance white slightly adhering crystalline powder
Safety 26-45 Risk Codes 23/24/25
Molecular Structure Molecular Structure of 16919-19-0 (Silicate(2-),hexafluoro-, ammonium (1:2)) Hazard Symbols ToxicT

Ammoniumfluosilicate (6CI);Silicate(2-), hexafluoro-, diammonium (8CI,9CI);Ammonium fluorosilicate ((NH4)2SiF6);Ammonium hexafluorosilicate ((NH4)2SiF6);Ammonium siliconfluoride ((NH4)2SiF6);Diammonium hexafluorosilicate ((NH4)2SiF6);LPE 6;NSC 310005;


Ammonium hexafluorosilicate Specification

The Silicate(2-),hexafluoro-, ammonium (1:2), with its CAS registry number 16919-19-0, has the IUPAC name of diazanium hexafluorosilicon(2-). For being a kind of white slightly adhering crystalline powder, it is soluble in water and its product categories are including Industrial/Fine Chemicals; Inorganic Chemicals; Inorganics; Ammonium Salts; Metal and Ceramic Science; Salts.

The characteristics of this chemical are as below: (1)H-Bond Donor: 2; (2)H-Bond Acceptor: 7; (3)Exact Mass: 178.036094; (4)MonoIsotopic Mass: 178.036094; (5)Topological Polar Surface Area: 2; (6)Heavy Atom Count: 9; (7)Complexity: 62.7; (8)Covalently-Bonded Unit Count: 3; (9)Density: 2.01.

The production method of this chemical: Flousper powder could react with silica sand and sulfuric acid to produce fluosilicic acid, and then neutralize with ammonia till have the PH value 8; Next filter when heated and then remove the insoluble impurity; Lastly, go through the process of condensation, crystallization, centrifugal separation and drying to get this products, according to the chemical equation: H2SiF6+2NH4OH→(NH4)2SiF6+2H2O.

As to its usage, it is widely applied in many ways. It could be used as the disinfectant in brewing industry, glass etching agent, wood preservative agent, mothproofing agent in textiles; And it could also be used as the analysis reagent.

When you are dealing with this chemical, you should be cautious. For being a kind of toxic chemical, it may at low levels cause damage to health and it is harmful if by inhalation, in contact with skin and if swallowed. Therefore, if in case of contact with eyes, rinse immediately with plenty of water and seek medical advice, and if in case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).

Additionally, you could convert the following datas into the molecular structure:
(1)Canonical SMILES: [NH4+].[NH4+].F[Si-2](F)(F)(F)(F)F
(2)InChI: InChI=1S/F6Si.2H3N/c1-7(2,3,4,5)6;;/h;2*1H3/q-2;;/p+2

Below are the toxicity information of this chemical:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
frog LDLo subcutaneous 224mg/kg (224mg/kg)   Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales. Vol. 124, Pg. 133, 1937.
guinea pig LDLo oral 150mg/kg (150mg/kg)   Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales. Vol. 124, Pg. 133, 1937.


Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 53(11), Pg. 80, 1988.
rat LDLo oral 100mg/kg (100mg/kg)   National Academy of Sciences, National Research Council, Chemical-Biological Coordination Center, Review. Vol. 5, Pg. 27, 1953.

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