Agent Name

Ammonium fluosilicate

CAS Number

16919-19-0

Formula

F6-Si.2H4-N

Major Category

Metals

Synonyms

Ammonium fluorosilicate; Ammonium hexafluorosilicate; Ammonium silicofluoride; Ammonium silicon fluoride; Diammonium fluorosilicate; Diammonium fluosilicate; Diammonium fluosilicate ((NH4)2SiF6); Diammonium hexafluorosilicate; Diammonium hexafluorosilicate(2-); Diammonium silicon hexafluoride; Fluorosilicic acid, ammonium salt; LPE 6; Silicate(2-), hexafluoro-, diammonium; Silicate, hexafluoro-, diammonium; [ChemIDplus] UN2854

Category

Metals, Inorganic Compounds

Description

White solid; [Hawley] Colorless crystals, soluble in water; [MSDSonline]

Sources/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]

Comments

A strong skin and eye irritant; [Hawley] Toxic by inhalation, ingestion, and skin contact; [eChemPortal: ESIS] LD50 (mouse) = 70 mg/kg; Causes ataxia and flaccid paralysis without anesthesia; [RTECS) "Toxic and irritating hydrogen fluoride, silicon tetrafluoride and oxides of nitrogen may form in fires." [CHRIS] See "FLUORIDES."

Exposure Assessment
BEI

Fluorides in urine = 2 mg/L prior to shift or 3 mg/L at end of shift; (Repeated measurements recommended.)

TLV (ACGIH)

2.5 mg/m3, as F

PEL (OSHA)

2.5 mg/m3, as F

MAK

1 mg/m3, inhalable fraction, as F

IDLH (NIOSH)

, as F

Links to Other NLM Databases
Health Studies

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Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Processes

Industrial Processes with risk of exposure: