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CarCareTruthProducts · Ranked

Pine Oil

  • Terpene solvents
  • CAS 8002-09-3
  • IUPAC: Pine oil (terpene alcohol mixture, predominantly α-terpineol)

Pine Oil (CAS 8002-09-3) appears in 1 of the 1,812 car-care products CarCareTruth tracks (as of June 2026). It is classified as a VOC.

Skin and eye irritant; documented skin sensitizer in mixtures. Inhalation of vapors causes headache, nausea, and CNS effects. Pine oil is acutely toxic to aquatic organisms but biodegrades readily in soil and water.

Pine oil is a steam-distilled fraction of pine wood, dominated by α-terpineol and related monoterpene alcohols. It has been used as a cleaning solvent and disinfectant for over a century, and is a common ingredient in penetrating oils because its low surface tension and natural wicking action help the formula reach corroded threads that heavier petroleum carriers cannot enter.

The chemistry is reactive in a similar way to turpentine: terpene alcohols oxidize on exposure to air to form sensitizing peroxides. Repeated bare-hand contact can produce an allergic skin reaction (H317 in many mixtures). Inhaled vapors cause headache, dizziness, and CNS depression at high concentration — typical complaints from using terpene-based penetrating oils indoors.

Pine oil biodegrades readily and is not bioaccumulative, but its aquatic toxicity at concentration is documented. The combination of natural origin, biodegradability, and aquatic toxicity is common across terpene chemistry — biodegradable does not mean harmless to surface waters in the short term.

Health & environment profile

VOC
yes
Prop 65 listed
no
Asthmagen
no
EPA Safer Choice
no
Aquatic toxicity
yes
Biodegradable
yes
Bioaccumulative
no
Persistent
no
Ozone depleting
no
Microplastic
no
PFAS
no
Env. score
4/5
Purpose: Terpene co-solvent and natural penetrant — wicks into corroded threads via low surface tension

Common questions about Pine Oil

What is Pine Oil used for in car care?
Terpene co-solvent and natural penetrant — wicks into corroded threads via low surface tension
Is Pine Oil a VOC?
Yes. Pine Oil is classified as a volatile organic compound (VOC).
Is Pine Oil on California's Proposition 65 list?
No. Pine Oil is not on California's Proposition 65 list.
Is Pine Oil biodegradable?
Yes. Pine Oil has a confirmed biodegradable profile.

1 product 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.