Plasticizers
REACH
Dibutyl phthalate
CAS Number
84-74-2
EC Number
201-557-4
Abbreviation
DBP
What is Dibutyl phthalate?
Dibutyl phthalate (CAS 84-74-2), commonly abbreviated as DBP, is a phthalate ester plasticizer used in polymer processing, coatings, and specialty chemical formulations.
Where is Dibutyl phthalate used?
- PVC and polymer compounding: imparts flexibility
- Films, tubing, and molded components: reduces brittleness
- Printing inks and nitrocellulose lacquers: solvent carrier and film-forming aid, improving adhesion and coating durability
- Automotive underbody coatings and sealants: maintains elasticity under mechanical stress and temperature variation
- Personal care manufacturing: film plasticizer
- Nail lacquers: prevents cracking, though regulatory restrictions have significantly reduced its use in cosmetic applications across major markets
Good to know: Buyers should verify regional regulatory compliance before sourcing, as DBP is subject to restriction under REACH and various cosmetic regulations.
Commercial specifications
- Drum and IBC quantities, with bulk tanker options for large-volume industrial procurement
Other Names (Synonyms)
phthalic acid dibutyl ester|phthalic acid di-n-butyl ester|o-benzenedicarboxylic acid dibutyl ester|nutyl phthalate|n-butyl phthalate|dibutyl-o-phthalate|dibutyl 1,2-benzenedicarboxylate|di-n-butyl phthalate|DBP
What are the physical properties of Dibutyl phthalate?
Melting Point -35 °C
Boiling Point 340 °C
Density 1.0465 g/cm³ @ Temp: 20 °C
Flash Point 340 °F
Appearance clear liquid
Color APHA: ≤10
Odor odorless
Form Liquid
Water Solubility Slightly soluble. 0.0013 g/100 mL
Vapor Pressure 1 mm Hg ( 147 °C)
Refractive Index n 20/D 1.492(lit.)
pH 7 (20°C, 10mg/L)
Log P 4.46-4.57 at 20-30℃
How is Dibutyl phthalate classified and handled safely? Learn More
Danger
GHS08· Health Hazard GHS09· Environmental Hazard GHS07· Irritant
Hazard Statements
H303 May be harmful if swallowed
H316 Causes mild skin irritation
H317 May cause an allergic skin reaction
H320 Causes eye irritation
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
Which trade and regulatory codes apply to Dibutyl phthalate?
HS Code 29173100
UN Number 3082
ADR Class 9
Packing Group III
Storage Class 6.1C - Combustible acute toxic Cat.3
toxic compounds or compounds which causing chronic effects
WGK (Germany) 2