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
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
AGS Lith-Ease White Lithium Grease 8 ozProp 65white-lithium-grease
Armor All Ultra Shine Headlight Restoration WipesProp 65headlight-restoration
Liquid Wrench L616 White Lithium GreaseProp 65white-lithium-grease
Meguiar's Cleaner Wax, Liquid (A1216)Prop 65liquid-wax
Sta-Lube Super White Multi-Purpose Lithium GreaseProp 65white-lithium-grease
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.