Magnesium hexafluorosilicate

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  • Identifiers

    CAS number
    18972-56-0

    Molecular formula
    F6MgSi

    SMILES
    F[Si-2](F)(F)(F)(F)F.[Mg+2]

    Safety labels

    Acute Toxic
    Acute Toxic

  • Odor profile

  • Properties

    Molecular weight
    166.38 g/mol

  • Synonyms

    • Magnesium hexafluorosilicate
    • Magnesium fluorosilicate
    • Caswell No. 532
    • Hexafluorosilicate(2-) magnesium (1:1)
    • Fluosilicate de magnesium [French]
    • Fluosilicate de magnesium
    • Silicate(2-), hexafluoro-, magnesium (1:1)
    • EINECS 241-022-2
    • UN2853
    • EPA Pesticide Chemical Code 075304
    • UNII-H37V80D2JS
    • DTXSID70884950
    • MAGNESIUM HEXAFLUOROSILICATE [MI]
    • EC 241-022-2
    • MAGNESIUM SILICOFLUORIDE, (SOLID)
    • MAGNESIUM SILICOFLUORIDE, [SOLID]
    • RefChem:155211
    • Magnesium hexafluorosilicate(2)
    • FLUOROSILICATO DE MAGNESIO
    • hexafluorosilicate, magnesium salt
    • DTXCID301024367
    • SILICO FLUORURO DE MAGNESIO
    • Silicate(2-), hexafluoro-, magnesium
    • MAGNESIUM FLUOROSILICATE [INCI]
    • Hexafluorosilicate(2) magnesium (1:1)
    • Silicate(2), hexafluoro, magnesium (1:1)
    • MAGNESIUM HEXAFLUOROSILICATE (MGSIF6)
    • 241-022-2
    • 18972-56-0
    • Magnesium fluosilicate
    • 16949-65-8
    • 12449-55-7
    • magnesium;hexafluorosilicon(2-)
    • H37V80D2JS
    • Magnesium manganese fluoride (MgMn2F6) (8CI)
    • MAGNESIUM SILICOFLUORIDE
    • Fluosilicic acid magnesium salt
    • Silicon fluoride magnesium salt
    • Magnesium hexafluorosilicate(2-)
    • Magnesium silicofluoride (MgSiF6)
    • F6MgSi
    • Magnesiumhexafluorosilicat
    • INWUJAAIUAAHJA-UHFFFAOYSA-N
    • Magnesium hexafluoridosilicate(2-)
    • AKOS015903678
    • Magnesium hexafluorosilicate, AldrichCPR
    • NS00086684
    • Magnesium fluorosilicate [UN2853] [Poison]
    • Q11129312
    • 16949-65-8

  • Applications

    Magnesium hexafluorosilicate, CAS 18972-56-0, is used as a fluoride source and a chemical intermediate for fluorination syntheses in specialty chemical applications. It is often regarded as a precursor for fluorinated compounds and may participate in inorganic and organic fluorination processes. In metal finishing and plating, it serves as a flux or surface-treatment additive to aid oxide removal and improve adhesion. In the glass and ceramic industries, MgSiF6 functions as an etchant and a fluoride source for surface treatments. In electronics manufacturing, it can be used in cleaning and surface-etching steps prior to metallization or coating. Uses and handling are subject to local regulations and formulation limits.

    gpt-5-nano

1 4

IFRA standard 51

Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
 No restriction
Category 2
Products applied to the axillae
 No restriction Category 7B
Leave-on products applied to the hair with some hand contact
 No restriction
Category 3
Products applied to the face/body using fingertips
 No restriction Category 8
Products with significant anogenital exposure
 No restriction
Category 4
Products related to fine fragrance
 No restriction Category 9
Products with body and hand exposure, primarily rinse off
 No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 No restriction Category 10A
Household care products with mostly hand contact
 No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 No restriction
Category 5D
Baby Creams, baby Oils and baby talc
 No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 No restriction
Category 6
Products with oral and lip exposure
 No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction