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CarCareTruthProducts · Ranked

Titanium Dioxide

  • Dyes & colorants
  • CAS 13463-67-7
  • IUPAC: Titanium dioxide

Titanium Dioxide (CAS 13463-67-7) appears in 5 of the 1,812 car-care products CarCareTruth tracks (as of June 2026), 2 of which carry a DANGER signal word on their published Safety Data Sheet. It is listed on California's Proposition 65.

California Prop 65 listed for cancer risk via the airborne inhalation route (airborne, unbound particles of respirable size — IARC Group 2B reclassified to Group 1 for inhaled dusts in 2024 for occupational settings). In consumer product formulations (liquid/paste/wipe), titanium dioxide is bound in the matrix and presents no respirable dust exposure pathway. Prop 65 warning in consumer products is a regulatory artifact of the classification framework rather than a practical inhalation risk during typical use.

Titanium dioxide (TiO2, CAS 13463-67-7) is a white inorganic pigment used universally in coatings, sunscreens, and UV-protective formulations. In headlight UV sealant wipes, it serves as both a UV-blocking agent and opacifying pigment. It is chemically inert in typical consumer use and presents no meaningful aquatic toxicity in particle form.

The California Prop 65 listing applies specifically to airborne, unbound particles of respirable size — an occupational inhalation hazard from dry powder handling, not from consumer use of liquid or wipe products where TiO2 is bound in the formula matrix. SDS §15 lists TiO2 under Prop 65 for these products because the listing is ingredient-level and applies regardless of physical state in the consumer product. Products containing TiO2 technically require Prop 65 labeling, even when the actual inhalation pathway doesn't exist in consumer use.

Note: this slug is distinct from titanium-dioxide-pigment used in automotive paint and coating products. The underlying chemical is identical (CAS 13463-67-7); the separate slug reflects different product context and purpose text.

Health & environment profile

VOC
no
Prop 65 listed
yes
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: UV-blocking pigment and whitener in UV sealant and coating formulations; provides opacity and UV absorption in headlight sealant wipes

Common questions about Titanium Dioxide

What is Titanium Dioxide used for in car care?
UV-blocking pigment and whitener in UV sealant and coating formulations; provides opacity and UV absorption in headlight sealant wipes
Is Titanium Dioxide a VOC?
No. Titanium Dioxide is not classified as a volatile organic compound (VOC).
Is Titanium Dioxide on California's Proposition 65 list?
Yes. Titanium Dioxide appears on California's Proposition 65 list.

5 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.