Overview
Dibutyl phthalate (CAS 84-74-2 ), commonly abbreviated as DBP, is a phthalate ester plasticizer used across polymer processing, coatings, and specialty chemical formulations.
It functions primarily as a plasticizer and solvent carrier, improving flexibility and workability in a range of industrial systems. In PVC and polymer compounding, DBP imparts flexibility.
It reduces brittleness in films, tubing, and molded components. Printing inks and nitrocellulose lacquers rely on DBP as a solvent carrier and film-forming aid, improving adhesion and coating durability.
Automotive underbody coatings and sealants incorporate DBP to maintain elasticity under mechanical stress and temperature variation. In personal care manufacturing, it has been used as a film plasticizer.
It was used in nail lacquers to prevent cracking, though regulatory restrictions have significantly reduced its use in cosmetic applications across major markets. It is supplied as a clear, oily liquid.
The product is available in drum and IBC quantities, with bulk tanker options available for large-volume industrial procurement. Technical grade is the standard commercial specification.
This grade is used for industrial and polymer applications. Buyers should verify regional regulatory compliance before sourcing, as DBP is subject to restriction under REACH and various cosmetic regulations.
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Physical Properties
| 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℃ |
Safety & Handling
Danger GHS08 GHS09 GHS07 Hazard Statements H303 May be harmful if swallowed H316 Causes mild skin irritation H317 May cause an allergic skin reaction H320 Causes eye irritation H335 May cause respiratory irritation H360 May damage fertility or the unborn child H361 Suspected of damaging fertility or the unborn child H370 Causes damage to organs H372 Causes damage to organs through prolonged or repeated exposure H373 May causes damage to organs through prolonged or repeated exposure H400 Very toxic to aquatic life H411 Toxic to aquatic life with long lasting effects 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. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P391 Collect spillage. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P308+P316 Get emergency medical help immediately. P332+P317 Get emergency medical help. P333+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| 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 |
Other Names
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Chemical Properties
- CAS Number
- 84-74-2
- EC Number
- 201-557-4
- Mol. Weight
- 278.34
- HS Code
- 29173100
- Category
- Catalysts & Catalyst Precursors