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Crystal Fda Approved Plasticizer Dibutyl Phthalate

  • 84-74-2

  • Industrial grade

  • C16H22O4

  • 278.34300

  • 2917341090

  • dimethyl benzene-1,2-dicarboxylate;

  • phthalic acid dibutyl ester; 1,2-dibutyl 1,2-benzenedicarboxylate; Dibutyl phthalate; phthalic acid di-n-butyl ester; dibutylphosphonic acid butyl ester;


1. Introduction of Dibutyl Phthalate

Dibutyl phthalate, also known as Dibutyl fat, English :Dibutyl phthalate, colorless transparent oil liquid, specific gravity 1.045 (21 deG C), boiling point 340 DEG C, insoluble in water, water soluble and volatile are very low, but soluble in ethanol, ether, acetone and benzene and other organic solvents can also be soluble with most hydrocarbons. Dibutyl phthalate (DBP), dioctyl phthalate (DOP) and diiso-butyl phthalate (DIBP) are three of the most common plasticizers, which are commonly used in plastics, synthetic rubber and artificial leather. It is prepared by heating phthalic anhydride and n-butanol esterification.

Chemical Name

Dibutyl Phthalate



Molecular Formula


Molecular Weight


2. Properties of Dibutyl Phthalate

Appearance & Physical State

Colorless transparent oily liquid

Boiling Point


Flash Point


Vapour pressure

1 mm Hg ( 147 °C)

Melting point

-35 ℃

Decomposition temperature

no data available


Insoluble in water, soluble in alcohol, ether, acetone and benzene



Security term

S16:Keep away from sources of ignition.

SS45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)36/37:Wear suitable protective clothing and gloves.

S53Avoid exposure - obtain special instructions before use.

S61Avoid release to the environment. Refer to special instructions / safety data sheets.

Risk term

R50Very toxic to aquatic organisms.

R61May cause harm to the unborn child.

R62Risk of impaired fertility.

The impact on the environment

Health hazard

For people: the most sensitive people can smell the threshold concentration of 0.00026mg/L. The threshold concentration of this product is 0.00016mg/L for the light reflex action of eyes, and 0.00011 ~ 0.00012mg/L for the bioelectrical activity of brain. Polyneuritis, spinal neuritis, and multiple neuritis in the brain may occur in workers who produce plasticizers.

Action on skin and eyes: a small amount can be absorbed through the whole skin. Skin and eye mucous membrane contact with this product once, does not cause irritation, but repeated contact can be seen serious irritation. According to some experimental data, it may cause mild sensitization.

Emergency treatment and disposal methods

Site ventilation, eliminate all fire hidden danger. Emergency personnel must wear protective equipment to enter the site. Adsorb the leakage with vermiculite, dry sand, soil or similar sorbent and collect it in an airtight container.

Work site to strengthen ventilation, strictly prohibit fireworks. Operators wear clean and intact protective equipment (preferably made of butyl, neoprene, nitrile or synthetic rubber), wear anti-chemical goggles and choose appropriate breathing apparatus. Wear an industrial Type A gas mask when high concentrations of the product are in the air, and use A filter when fog is present. Use filter type A gas mask. When synthesizing and applying the product, especially when heating the product or plastics containing the product, seal to prevent steam and mist from escaping. The respiratory and gastrointestinal systems should be checked regularly.

In case of contact with eyes or skin, rinse immediately with running water. After inhalation, move the oral patient to fresh air, and give oxygen or artificial respiration if necessary. After ingestion, gargle, drink plenty of water and seek medical advice. Personal Protection and preventive measures:

Fire extinguishing method: dry powder, carbon dioxide, foam fire.

Waste disposal method: incineration.

Operation precautions: closed operation, strengthen ventilation. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that the operator wear a self-priming filter gas mask (half mask), chemical safety glasses, protective clothing and rubber oil-resistant gloves. Keep away from fire and heat source. No smoking in workplace. Use explosion-proof ventilation systems and equipment. Prevent steam leakage into the workplace air. Avoid contact with oxidants and acids. Handling should be carried lightly to prevent damage to packaging and containers. Equipped with the corresponding variety and quantity of fire fighting equipment and leakage emergency treatment equipment. Empty containers may contain hazardous materials.

Storage precautions: Store in a cool and ventilated warehouse. Keep away from fire and heat source. Should be separated from oxidizer, acid storage, do not mix storage. Equipped with the appropriate variety and quantity of fire equipment. The storage area shall be equipped with leakage emergency treatment equipment and suitable storage materials.


Dibutyl phthalate is a plasticizer with strong solubility in many resins. Mainly used for polyvinyl chloride processing, which can give good softness to the products. Because of its relative low price and good processing, it is widely used in China, almost equal to DOP. However, the volatile and water extraction is large, so the durability of products is poor, and its use should be gradually limited. It can also be used to manufacture paints, adhesives, artificial leather, printing inks, safety glass, celluloid, dyes, pesticides, spice solvents, fabric lubricants and so on.

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