Medium concernPlasticizer
Diisononyl phthalate
PhthalateEndocrine disruptorPossible carcinogen
What it is
A high-molecular-weight branched phthalate adopted as a replacement for DEHP in flexible PVC.
What it does
Flexibilises PVC in wire insulation, flooring, and some children’s products.
Why it’s a concern
California Proposition 65 lists DINP as a substance known to cause cancer based on liver tumours in rodents, though the mechanism may be species-specific. The US Consumer Product Safety Commission permanently banned DINP above 0.1% in children’s toys in 2017 due to reproductive toxicity concerns at higher exposures.
Also known as
DINP
CAS numbers
28553-12-068515-48-0
Commonly found in
vinyl flooringgarden hosestoys
Safer alternatives
- DINCH
- citrate plasticizers
- non-PVC materials
Related chemical families
Sources
- California Prop 65
- US CPSC Final Rule 2017