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Hydrous Magnesium Silicate (Talc)

  • Abrasives
  • CAS 14807-96-6
  • IUPAC: Magnesium silicate hydroxide

Hydrous Magnesium Silicate (Talc) (CAS 14807-96-6) appears in 2 of the 1,812 car-care products CarCareTruth tracks (as of June 2026).

Inert mineral filler at typical 3–7% concentration in solvent-based coatings. Inhalation of fine talc dust can cause respiratory irritation, but in a liquid aerosol formulation the exposure pathway is negligible — talc remains bound in the coating film. Cosmetic-grade talc (non-fibrous, asbestos-free) is not classified as a carcinogen; industrial talc containing fibrous silicates is a separate classification not applicable to certified cosmetic/coating-grade material.

Hydrous magnesium silicate (CAS 14807-96-6), commonly known as talc, is a naturally occurring phyllosilicate mineral used as a filler and bodying agent in coatings and paints. In solvent-based aerosol rust converters, it provides thixotropic body that helps the product adhere to vertical surfaces and reduces sagging.

At typical use concentrations of 3–7% in a liquid aerosol formulation, talc presents no meaningful inhalation hazard during use — the particle remains suspended in the solvent carrier and is deposited as part of the cured film. The GHS classification concerns for talc relate primarily to industrial dry-powder handling scenarios, not consumer liquid aerosol applications.

Health & environment profile

VOC
no
Prop 65 listed
no
Asthmagen
no
EPA Safer Choice
no
Aquatic toxicity
no
Biodegradable
no
Bioaccumulative
no
Persistent
yes
Ozone depleting
no
Microplastic
no
PFAS
no
Env. score
4/5
Purpose: Mineral filler/extender; provides body and improved sag resistance in paint and coating formulations

Common questions about Hydrous Magnesium Silicate (Talc)

What is Hydrous Magnesium Silicate (Talc) used for in car care?
Mineral filler/extender; provides body and improved sag resistance in paint and coating formulations
Is Hydrous Magnesium Silicate (Talc) a VOC?
No. Hydrous Magnesium Silicate (Talc) is not classified as a volatile organic compound (VOC).
Is Hydrous Magnesium Silicate (Talc) on California's Proposition 65 list?
No. Hydrous Magnesium Silicate (Talc) is not on California's Proposition 65 list.

2 products contain this

Related

Health and environment notes translate the manufacturer Safety Data Sheet, the GHS classification, and authoritative regulatory listings (California Prop 65, EPA). Not medical advice. They describe the ingredient itself; whether a hazard applies to a finished product depends on its concentration and how it's used.