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Cucurbituril

  • Polymers
  • CAS 2102021-72-5

Cucurbituril (CAS 2102021-72-5) appears in 1 of the 1,812 car-care products CarCareTruth tracks (as of June 2026).

Not classified as hazardous under OSHA HCS. SDS §3 does not require disclosure at normal formulation concentrations. No GHS H-codes assigned. Cucurbituril oligomers are generally considered low-hazard at consumer-product concentrations.

Cucurbituril (CAS 2102021-72-5) is a family of macrocyclic barrel-shaped glycoluril oligomers that form a hydrophobic cavity capable of encapsulating volatile organic molecules. In odor-elimination products, it physically traps the hydrophobic volatile compounds responsible for perceived odors inside its molecular cage, preventing them from reaching olfactory receptors. The mechanism is physical entrapment rather than chemical reaction, enzyme activity, or antimicrobial kill. Chemical Guys markets this chemistry as "Goodbye Technology." Not classified as hazardous under OSHA HCS at consumer-product concentrations.

Health & environment profile

VOC
no
Prop 65 listed
no
Asthmagen
no
EPA Safer Choice
no
Aquatic toxicity
no
Biodegradable
no
Bioaccumulative
no
Persistent
no
Ozone depleting
no
Microplastic
no
PFAS
no
Env. score
5/5
Purpose: Odor-elimination active — macrocyclic barrel-shaped polymer that physically traps hydrophobic volatile odor molecules inside its cavity

Common questions about Cucurbituril

What is Cucurbituril used for in car care?
Odor-elimination active — macrocyclic barrel-shaped polymer that physically traps hydrophobic volatile odor molecules inside its cavity
Is Cucurbituril a VOC?
No. Cucurbituril is not classified as a volatile organic compound (VOC).
Is Cucurbituril on California's Proposition 65 list?
No. Cucurbituril is not on California's Proposition 65 list.

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.