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Dipropylene Glycol (DPG)

  • Humectants
  • CAS 25265-71-8
  • IUPAC: 1,1'-oxydipropan-2-ol (mixture of isomers)

Dipropylene Glycol (DPG) (CAS 25265-71-8) appears in 2 of the 1,812 car-care products CarCareTruth tracks (as of June 2026). It is readily biodegradable.

Low toxicity glycol. Not classified as a health hazard under GHS at typical use concentrations. Widely used as a fragrance carrier and co-solvent in personal care, household, and cleaning products. No significant skin, eye, or inhalation hazard at concentrations found in cleaning formulations.

Dipropylene glycol (DPG) is a colorless, practically odorless glycol used primarily as a fragrance carrier and co-solvent in cleaning and personal care products. It improves fragrance dispersion and product shelf stability. At trace concentrations in carpet cleaning formulations, no significant health or environmental hazard is expected. Readily biodegradable and not classified as aquatically toxic.

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: Fragrance carrier and co-solvent — improves fragrance dispersion and product stability

Common questions about Dipropylene Glycol (DPG)

What is Dipropylene Glycol (DPG) used for in car care?
Fragrance carrier and co-solvent — improves fragrance dispersion and product stability
Is Dipropylene Glycol (DPG) a VOC?
No. Dipropylene Glycol (DPG) is not classified as a volatile organic compound (VOC).
Is Dipropylene Glycol (DPG) on California's Proposition 65 list?
No. Dipropylene Glycol (DPG) is not on California's Proposition 65 list.
Is Dipropylene Glycol (DPG) biodegradable?
Yes. Dipropylene Glycol (DPG) has a confirmed biodegradable profile.

2 products 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.