硅氟化铵

Description

Ammonium silicofluoride · CAS 16919-19-0 · F6Si.2H4N. UNII 1X545W620G. Melting Point: 230 °C; Solubility: 18.16 G/100 CC WATER @ 17 °C; Solubility: 55.5 G/100 CC WATER @ 100 °C.

Identification

CAS Registry Number	16919-19-0
PubChem CID	28145
Molecular formula	F6Si.2H4N
IUPAC name	diazanium;hexafluorosilicon(2-)
UNII (FDA)	1X545W620G

Computed Descriptors

Molecular Weight	178.153
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	7
Rotatable Bond Count	0
Exact Mass	178.03609377
Monoisotopic Mass	178.03609377
Topological Polar Surface Area	2
Heavy Atom Count	9
Formal Charge	0
Complexity	62.7

Physical & Chemical Properties

Melting Point	230 °C
Solubility	18.16 G/100 CC WATER @ 17 °C
Solubility	55.5 G/100 CC WATER @ 100 °C
Density	2.011 g/cu cm
Density	2.19 @25 °C

Physical description & handling notes

• Ammonium fluorosilicate appears as a white crystalline solid. Noncombustible. Corrodes aluminum. Used as a disinfectant, in etching glass, metal casting, and electroplating.
• White solid; [Hawley] Colorless crystals, soluble in water; [MSDSonline]
• CRYSTALLINE POWDER
• White cubic or trigonal crystals.
• ODORLESS
• TWO MODIFICATIONS @ ROOM TEMP: STABLE, CUBIC PHASE; METASTABLE, TRIGONAL PHASE

Regulatory Status

Regulatory & Food Contact	FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS CIR / INCI: Oral care; Antiplaque

GHS Hazard Classification

Reported hazard statements	H301, H311, H331, H412 (11.1%), H315, H319, H335, H372

Documented Uses

• Used as an insecticide, miticide, mothproofing agent, wood preservative, and disinfectant (brewing industry); Also used in soldering flux, laundry sours, glass etching, light metal casting, electroplating, and dental prophylaxis; [HSDB]
• Metal Preparation and Pouring [Category: Foundry]
• Electroplating [Category: Plate]
• Soldering [Category: Heat or Machine]
• Applying Wood Preservatives [Category: Other]
• Using Disinfectants or Biocides [Category: Clean]

Synonyms

Ammonium hexafluorosilicate; 16919-19-0; Ammonium fluosilicate; Ammonium fluorosilicate; AMMONIUM SILICOFLUORIDE; Diammonium hexafluorosilicate; Ammonium silicon fluoride; Caswell No. 043; Diammonium fluosilicate; Diammonium silicon hexafluoride; Diammonium fluorosilicate; Diammonium hexafluorosilicate(2-); LPE 6; Silicate(2-), hexafluoro-, diammonium; HSDB 472; DTXSID6047076

Frequently Asked Questions

What are the CAS number and molecular formula of Ammonium silicofluoride?

CAS 16919-19-0; molecular formula F6Si.2H4N; molecular weight — g/mol.

What other names is Ammonium silicofluoride known by?

Ammonium hexafluorosilicate, 16919-19-0, Ammonium fluosilicate, Ammonium fluorosilicate, AMMONIUM SILICOFLUORIDE, Diammonium hexafluorosilicate.

What is the regulatory status of Ammonium silicofluoride?

Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; CIR / INCI: Oral care; Antiplaque.

Is Ammonium silicofluoride classified as hazardous?

Hazard statements reported: H301, H311, H331, H412, H315.

What are the key physical properties of Ammonium silicofluoride?

Melting Point: 230 °C; Solubility: 18.16 G/100 CC WATER @ 17 °C; Solubility: 55.5 G/100 CC WATER @ 100 °C; Density: 2.011 g/cu cm.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.