Plasticizers
REACH
Dioctyl phthalate
CAS Number
117-84-0
EC Number
204-214-7
Abbreviation
DNOP
What is Dioctyl phthalate?
Dioctyl phthalate (CAS 117-84-0), commonly abbreviated as DNOP, is a primary plasticizer used to impart flexibility and durability to PVC and other polymer systems.
Where is Dioctyl phthalate used?
- Wire and cable insulation: flexible PVC compounding where low volatility is required
- Flooring and industrial sheeting: softness and elongation in finished materials
- Coatings and sealants: plasticizing modifier controlling film flexibility and adhesion
- Nail lacquers: film-forming plasticizer, though regulatory pressure has driven reformulation in many markets
- Adhesives: viscosity control
- It functions by reducing the glass transition temperature of the base resin.
Good to know: Buyers should verify current regulatory compliance requirements for their target market before sourcing; restrictions vary by region and application.
Commercial specifications
- Purity specifications generally at 99% or above
- Typically in ISO tank containers, drums, and IBCs
Other Names (Synonyms)
Dioctyl benzene-1,2-dicarboxylate|di-n-octyl phthalate|DNOP
What are the physical properties of Dioctyl phthalate?
Melting Point -25 °C
Boiling Point 220 °C @ Press: 4 Torr
Density 0.978 g/cm³ @ Temp: 20 °C
Flash Point 219 °C
Color Colourless
Form Oily Liquid
Water Solubility Insoluble in water.
Vapor Pressure 5(x 10 -8 mmHg) at 82 °C, 500 at 132 °C (Gross and Colony, 1973)
Refractive Index n 20/D 1.485
How is Dioctyl phthalate classified and handled safely? Learn More
Warning
GHS08· Health Hazard GHS07· Irritant
Hazard Statements
H313 May be harmful in contact with skin
H317 May cause an allergic skin reaction
H320 Causes eye irritation
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P233 Keep container tightly closed.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
Which trade and regulatory codes apply to Dioctyl phthalate?
HS Code 29173200
Storage Class 10 - Combustible liquids
WGK (Germany) 2