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CarCareTruth

Water

  • Water
  • CAS 7732-18-5
  • IUPAC: oxidane

Water (CAS 7732-18-5) appears in 236 of the 2,122 car-care products CarCareTruth tracks (as of August 2026). It is on the EPA Safer Choice list.

Water carries no GHS hazard classification, is not on California's Prop 65 list, and has no carcinogen, asthmagen, or reproductive-toxicity classification. It is the safest and most common ingredient in car care.

The most common ingredient in car care — and the safest. Water is the carrier for most shampoos, spray sealants, tire dressings, and interior cleaners. Water-based products are generally preferred over solvent-based ones for both health and environmental reasons.

Health & environment profile

VOC
no
Prop 65 listed
no
Asthmagen
no
EPA Safer Choice
yes
Aquatic toxicity
no
Biodegradable
yes
Bioaccumulative
no
Persistent
no
Ozone depleting
no
Microplastic
no
PFAS
no
Env. score
5/5
Purpose: Universal solvent and carrier

Common questions about Water

What is Water used for in car care?
Universal solvent and carrier
Is Water a VOC?
No. Water is not classified as a volatile organic compound (VOC).
Is Water on California's Proposition 65 list?
No. Water is not on California's Proposition 65 list.
Is Water EPA Safer Choice certified?
Yes. Water is on the EPA Safer Choice list.

236 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.