No. PEG-9 is not classified as a volatile organic compound (VOC).

Is PEG-9 on California's Proposition 65 list?

No. PEG-9 is not on California's Proposition 65 list.

Is PEG-9 biodegradable?

Yes. PEG-9 has a confirmed biodegradable profile.

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PEG-9

Nonionic surfactants
CAS 25322-68-3
IUPAC: Polyethylene glycol, average n=9

CarCareTruth tracks PEG-9 (CAS 25322-68-3) as a car-care ingredient. It is readily biodegradable.

Not classified as hazardous under GHS at typical consumer concentrations. PEG-9 is a short-chain polyethylene glycol used as a nonionic emulsifier. No H-codes in standard formulation use. May cause mild irritation to eyes or skin at high concentrations — not relevant at trace emulsifier levels in water-based formulas.

PEG-9 (polyethylene glycol, n=9) is a nonionic emulsifier commonly used in water-based detailing chemicals, personal care products, and silicone emulsions. At trace concentrations in a silicone-water emulsion like VRP, it stabilizes the dispersion without contributing hazard classifications.

PEG-9 is considered readily biodegradable under OECD 301 protocols and has no bioaccumulation potential. It does not trigger aquatic toxicity concerns at typical use concentrations. No GHS H-codes apply at the concentrations present in consumer car care formulations.

Health & environment profile

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

Purpose: Nonionic emulsifier and surfactant; stabilizes oil-in-water emulsions

Common questions about PEG-9

What is PEG-9 used for in car care?: Nonionic emulsifier and surfactant; stabilizes oil-in-water emulsions
Is PEG-9 a VOC?: No. PEG-9 is not classified as a volatile organic compound (VOC).
Is PEG-9 on California's Proposition 65 list?: No. PEG-9 is not on California's Proposition 65 list.
Is PEG-9 biodegradable?: Yes. PEG-9 has a confirmed biodegradable profile.

No products on file contain this (yet)

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.