High concernPlasticizer
Diisobutyl phthalate
PhthalateEndocrine disruptorReproductive toxicant
What it is
A branched short-chain phthalate ester often used as a lower-cost substitute for DBP.
What it does
Plasticiser in nitrocellulose, PVC, and adhesives. Found as a contaminant in personal care products.
Why it’s a concern
DiBP is classified in the EU as a reproductive toxicant category 1B and is on the REACH SVHC list. Toxicity profile closely parallels DBP: fetal testis effects, reduced testosterone, altered reproductive tract development in male rodents.
Also known as
DiBP
CAS numbers
84-69-5
Commonly found in
adhesivesinksplastics
Safer alternatives
- DINCH
- citrate plasticizers
Related chemical families
Sources
- ECHA REACH SVHC