Is HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde) on California's Proposition 65 list?

No. HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde) is not on California's Proposition 65 list.

Is HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde) biodegradable?

Yes. HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde) has a confirmed biodegradable profile.

HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde)

Fragrances
CAS 31906-04-4
IUPAC: 4-(4-hydroxy-4-methylpentyl)cyclohex-3-ene-1-carbaldehyde

HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde) (CAS 31906-04-4) appears in 1 of the 2,122 car-care products CarCareTruth tracks (as of August 2026). It is classified as a VOC.

Health & environment profile

VOC: yes
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

Purpose: Synthetic fragrance ingredient with lily-of-the-valley scent; used in cleaning product fragrance blends

Common questions about HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde)

What is HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde) used for in car care?: Synthetic fragrance ingredient with lily-of-the-valley scent; used in cleaning product fragrance blends
Is HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde) a VOC?: Yes. HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde) is classified as a volatile organic compound (VOC).
Is HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde) on California's Proposition 65 list?: No. HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde) is not on California's Proposition 65 list.
Is HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde) biodegradable?: Yes. HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde) has a confirmed biodegradable profile.

1 product contain this

Malco OXY Carpet & Upholstery Cleaner
fabric-upholstery-cleaner

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.