Magnesium hexafluorosilicate

Synonyms

Fluosilicate de magnesium [French]; Fluosilicic acid magnesium salt; Hexafluorosilicate(2-) magnesium (1:1); Magnesium fluosilicate; Magnesium hexafluorosilicate(2-); Magnesium silicofluoride (MgSiF6); Silicon fluoride magnesium salt; Silicate(2-), hexafluoro-, magnesium (1:1); Magnesium fluorosilicate; [ChemIDplus] FLUOROSILICATO DE MAGNESIO; SILICO FLUORURO DE MAGNESIO; [IUCLID] UN2853

Category

Other Mineral Dusts

Description

Solid; [CAMEO] White powder; [Gelest MSDS]

Sources/Uses

Used for mothproofing textiles; [Merck Index] Used to make other chemicals; [CAMEO]

Comments

Toxic by ingestion; May cause serious eye injury [Classifications by the EC] Not a skin irritant in rabbits (80% aqueous solution); Hematological and clinical chemistry changes, adverse dental effects, mineralization in bone tissue, interstitial nephritis, hyperkeratosis of the stomach, increased relative liver and kidney weights, and increased relative testes and adrenal weights in males observed in 4-week oral study of rats at 3,000 ppm dietary (approximately 300 mg/kg/day); [IUCLID] An eye irritant; Corrosive to mucous membranes; Inhalation may cause corrosive injuries to upper respiratory tract and lungs; May cause osteofluorosis; [Gelest MSDS] See "Magnesium." See "Fluorosilicic acid." See "Calcium hexafluorosilicate."

Biomedical References

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

2.5 mg/m3, as F

2.5 mg/m3, as F

1 mg/m3, inhalable fraction, as F

250 mg/m3, as F

LC50 (rat) = 3,600 mg/m3/4hr

Yes

Skin burns

Processes

Industrial Processes with risk of exposure:

• Textiles (Printing, Dyeing, or Finishing)