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CarCareTruthProducts · Ranked

Hydrated Silica

  • Abrasives
  • CAS 7631-86-9

Hydrated Silica (CAS 7631-86-9) appears in 3 of the 1,812 car-care products CarCareTruth tracks (as of June 2026).

Amorphous silica is generally low-hazard (unlike crystalline silica, which is a respiratory carcinogen). Inhalation of dry powder dust at industrial volumes is not desirable but not classified as carcinogenic for the amorphous form. In formulated liquid products the dust hazard is absent.

Hydrated silica is a synthetic amorphous silica with bound water molecules. It is widely used in toothpastes, polishes, and cleaner-waxes as a very fine, non-crystalline mineral abrasive.

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: Synthetic amorphous silica with bound water; very fine mild abrasive in cleaner-waxes, AIO products, and some polishes for light-correction work

Common questions about Hydrated Silica

What is Hydrated Silica used for in car care?
Synthetic amorphous silica with bound water; very fine mild abrasive in cleaner-waxes, AIO products, and some polishes for light-correction work
Is Hydrated Silica a VOC?
No. Hydrated Silica is not classified as a volatile organic compound (VOC).
Is Hydrated Silica on California's Proposition 65 list?
No. Hydrated Silica is not on California's Proposition 65 list.

3 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.