Health › Orthophthalates › DnOP

DnOP (Di-n-Octyl Phthalate)CAS 117-84-0

Linear C8 isomer of DEHP — weaker reproductive activity but cumulative-risk concern in mixed exposures.

Other Orthophthalates substances:DEHPDBPBBPDCHPDIDPDi-(C10-rich, branched C9-C11 alkyl) PhthalateDIHPDi-(C9-rich branched C8-C10-alkyl) PhthalateDIBPDINP-2DnPP
Building products and consumer items containing Orthophthalates family members
DnOP belongs to the Orthophthalates family — products shown above commonly contain one or more substances from this family

Toxic Chemical Databases

Substance-specific listings — these flags are for DnOP alone, not for the broader family.

LBC Red List
Listed
Prop 65
Not Listed
IARC
Not Listed
NTP RoC
Not Listed
GSPI
Listed
REACH SVHC
Not Listed
TSCA
Listed

Chemical Type

Straight-Chain C8 Phthalate

Chemical Description

DnOP is the linear-chain analog of branched DEHP. Linear phthalates generally show weaker anti-androgen activity in repro assays, but cumulative-exposure modeling treats them together with the active phthalates. Used in flexible PVC, plasticized rubber, and some adhesives. CPSC permanently restricts it from children's products based on cumulative-risk modeling.

Biological Activity

Severity scores specific to this substance, NOT the parent family average. Differences between siblings are real and meaningful.

Endocrine
5/10
Reproductive
5/10
Developmental
5/10
Liver/Kidney
6/10
Cancer
4/10
Neurological
3/10
Cardiovascular
4/10
Immune
3/10
Respiratory
3/10
Skin
3/10

Top Health Consequences

Pathways of Exposure

Building Materials with DnOP

Listed alphabetically — product categories where this specific substance appears.

Want to screen a specific product? Drop the manufacturer's SDS into our SDS Toxic Chemical Screener — it screens this substance (CAS 117-84-0) against all seven databases shown above.