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Dibutyl Phthalate Used as Pasticizer for Nitrocellulose

Short Description:

Name: Dibutyl phthalate

CAS Number: 84-74-2

Molecular formula: C16H22O4

Molecular weight: 278.34

EINECS Number: 201-557-4

Melting point: -35 °C (lit.)

Boiling point: 340 °C (lit.)

Density: 1.043 g/mL at 25 °C (lit.)

Product Detail

Product Tags

Product Detail

Name  Dibutyl phthalate
CAS Number  84-74-2
Molecular formula  C16H22O4
Molecular weight  278.34
EINECS Number  201-557-4
Melting point  -35 °C (lit.)
Boiling point  340 °C (lit.)
Density  1.043 g/mL at 25 °C (lit.)
Vapor Density  9.6 (vs air)
Vapor pressure  1 mm Hg ( 147 °C)
Refractive index  n20/D 1.492(lit.)
Flash point  340 °F
Storage conditions  2-8°C
Solubility  Very soluble in alcohol, ether, acetone, benzene
Form  Liquid
Color  APHA:≤10
Specific gravity  1.049 (20/20℃)
Relative polarity  0.272




Dibutyl phthalate, also known as dibutyl phthalate or dibutyl phthalate, English: Dibutylphthalate, is a colorless transparent oily liquid with a specific gravity of 1.045 (21°C) and a boiling point of 340°C, insoluble in water, water-soluble and volatile The properties are very low, but it is easily soluble in organic solvents such as ethanol, ether, acetone and benzene, and is also miscible with most hydrocarbons. Dibutyl phthalate (DBP), dioctyl phthalate (DOP) and diisobutyl phthalate (DIBP) are the three most common plasticizers, which are plastics, synthetic rubber and artificial leather, etc. commonly used plasticizers. It is obtained by thermal esterification of phthalic anhydride and n-butanol.

Chemical Properties

Colorless transparent oily liquid with slightly aromatic odor. Soluble in common organic solvents and hydrocarbons.


-Used as a plasticizer for nitrocellulose, cellulose acetate, polyvinyl chloride, etc. This product is a plasticizer. It has strong dissolving power to various resins.

-Used for PVC processing, it can impart good softness to products. Because of its relatively cheap and good processability, it is very widely used, almost equivalent to DOP. However, the volatility and water extraction are relatively large, so the durability of the product is poor, and its use should be gradually restricted. This product is an excellent plasticizer of nitrocellulose and has strong gelling ability.

-Used for nitrocellulose coatings, has a very good softening effect. Excellent stability, flex resistance, adhesion and water resistance. In addition, the product can be used as a plasticizer for polyvinyl acetate, alkyd resin, ethyl cellulose and neoprene, and can also be used in the manufacture of paints, adhesives, artificial leather, printing inks, safety glass, celluloid, dyes , pesticides, fragrance solvents, fabric lubricants, etc.

- As a plasticizer for cellulose ester, salt and natural rubber, polystyrene; to make polyvinyl chloride and its copolymers cold-resistant for organic synthesis, ion selective electrode additives, solvents, insecticides, plasticizers , Gas chromatography stationary liquid (maximum use temperature 100 ℃, solvent is acetone, benzene, dichloromethane, ethanol), selective retention and separation of aromatic compounds, unsaturated compounds, terpene compounds and various oxygen-containing compounds (alcohols, aldehydes, ketones, esters, etc.).

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