Plasticizers
REACH
Dihexyl phthalate
CAS Number
84-75-3
EC Number
201-559-5
What is Dihexyl phthalate?
Dihexyl phthalate (CAS 84-75-3) is a phthalate-based plasticizer used to impart flexibility and processability to polymer systems. Also known as di-n-hexyl phthalate.
Where is Dihexyl phthalate used?
- PVC compounding: primary plasticizer for flexible films, tubing and profiles with moderate volatility and good low-temperature performance
- Automotive sealants and underbody coatings: flexibility across a broad service temperature range
- Adhesives and elastomers: hardness control and improved substrate adhesion
- Coatings: processing aid to adjust viscosity and film-forming characteristics in solvent-borne systems
- In industrial bonding applications it maintains durability.
Good to know: Buyers should confirm purity specifications and compliance documentation directly with the supplier, particularly where end-use applications involve regulated polymer contact materials or specific safety standards.
Commercial specifications
- Standard bulk and drummed packaging
Other Names (Synonyms)
Dihexyl 1,2-benzenedicarboxylate|benzene-1,2-dicarboxylic acid dihexyl ester|Di-n-hexyl phthalate|dihexyl benzene-1,2-dicarboxylate|1,2-Benzenedicarboxylic acid, dihexyl ester|Phthalic acid, dihexyl ester|N-Dihexyl phthalate|Bis(n-hexyl) phthalate
What are the physical properties of Dihexyl phthalate?
Melting Point -58 °C
Boiling Point 210 °C @ Press: 5 Torr
Density 0.995 g/cm³
Flash Point 185-187°C/0.5mm
Color Colorless to Almost colorless
Form clear liquid
Water Solubility Soluble in water (0.24 mg/L).
Refractive Index 1.4870
How is Dihexyl phthalate classified and handled safely? Learn More
Danger
GHS08· Health Hazard GHS07· Irritant GHS09· Environmental Hazard
Hazard Statements
H302 Harmful if swallowed [Warning Acute toxicity, oral]
H371 May cause damage to organs [Warning Specific target organ toxicity, single exposure]
H400 Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
H410 Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]
Which trade and regulatory codes apply to Dihexyl phthalate?
HS Code 29173490
UN Number 3082
Storage Class 6.1C - Combustible acute toxic Cat.3
toxic compounds or compounds which causing chronic effects
WGK (Germany) 3