DIHP (Diisoheptyl Phthalate)CAS 71888-89-6
Medium-chain phthalate used as a flexible-PVC plasticizer — REACH SVHC for reproductive toxicity.
Toxic Chemical Databases
Substance-specific listings — these flags are for DIHP alone, not for the broader family.
Chemical Type
Branched C7 Phthalate
Chemical Description
DIHP is the branched-chain C7 phthalate, intermediate in chain length between DBP and DEHP. EU REACH added it to the SVHC Candidate List on the basis of reproductive toxicity demonstrated in read-across to BBP and DEHP. Significantly smaller market than the dominant phthalates.
Biological Activity
Severity scores specific to this substance, NOT the parent family average. Differences between siblings are real and meaningful.
Top Health Consequences
- Reproductive toxicity by read-across to DEHP/BBP
- REACH SVHC Candidate Listed
- Anti-androgen activity in animal models
Pathways of Exposure
- Ingestion of house dust
- Dermal absorption
Building Materials with DIHP
Listed alphabetically — product categories where this specific substance appears.
Flexible PVC Applications
Specialty Plasticizer Uses
How We Keep DIHP Out of a House
We do not knowingly install anything containing DIHP. Our specifications name the chemistry we refuse, every submittal is screened against it, and substitutions are rejected — which is how a toxin free home stays that way through construction.
If you want a house specified this way from the start, or an existing house assessed for what is already in it, that is the work we do. Earth Bound Homes builds in Los Gatos, San Jose, Santa Clara County and across the San Francisco Bay Area.