Diisodecyl phthalate (DIDP) is a plasticizer with superior low volatility, heat aging resistance, and soap water extraction resistance, and it is used for wide range of flexible PVC. Since the change of tensile strength or elongation is low after heating, it can be used for the products that are used at relatively high temperature.

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Characteristics

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This can be used for the products that are used at relatively high temperature. It is also used widely in the fields that require low volatility and soap water extraction resistance. Compared to DOP, DIDP has lower initial viscosity, and viscosity increase is low during storage, so it is valid for viscosity adjustment and durability to plastisol.

DIDP

Chemical name Diisodecyl phthalate (DIDP)
CAS number 26761-40-0
Existing chemical number 3-1307
Formula C28H46O4
Molecular weight 447
Structural formula
Functional group/compound classification Benzene ring, ester bond
Melting point (°C) -50
Boiling point (°C, 101.3kPa) 420
Specific gravity (20/20°C) 0.968
Flash point (°C, open) 234
Ignition point (°C) 386
Aqueous solubility (ppm/20°C) 0.2
Fire Service Act Hazardous material, Class 4 Petroleum No. 4
Poisonous and Deleterious Substances Control Law Not applicable

Applications

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DIDP is appropriate for plasticizer of wide range of the flexible PVCs that requires heat resistance.

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