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p-Phenylenediamine (PPD)


Product Description and Uses

PPD is used as a component of engineering polymers and composites, aramid fibers, rubber chemicals, textile dyes and pigments. PPD is selected for the outstanding properties it imparts, including high temperature stability, high strength, and chemical and electrical resistance.

PPD is offered molten in bulk or in free-flowing flakes. Three grades are available to meet your specific needs. PPD AD (derived from an aniline process) is preferred for most uses, including resin and polymer applications.

PPD AD General uses
PPD AD Ultra Pure  Special high purity 
PPD AD Molten 

General uses, bulk 





p-Phenylenediamine is soluble in water, alcohol, and ether and only slightly soluble in chloroform. All grades of PPD are sensitive to air and/or moisture, and the presence of either tends to hasten color deterioration. It may darken on storage. This effect is less pronounced in the high purity grade.

DuPont does not recommend and will not knowingly offer or sell p-phenylenediamine (PPD) for uses involving prolonged skin contact. Such uses may involve, but are not limited to, products formulated with henna for tattoo applications or other skin coloration effects. This use of PPD in prolonged skin contact application has the potential to induce allergic skin reactions in sensitive individuals.

Persons proposing to use PPD in any formulation involving any more than incidental skin contact must rely on their own medical and legal judgment without any representation on our part. They must accept full responsibility for the safety and effectiveness of their formulations.


Specifications and other information on PPD are easily obtained by contacting us.

Typical Physical Properties*

Property      Typical Value 

Molecular Weight 

Specific Gravity at 1600C (3200F)     1.04 
Boiling Point (760 mmHg)    0C (0F)  274 (525)
Melting Point Range  
0C (0F)  142 (288) 
pH Information      9.45 (Water Extract)
Odor     Slight Aromatic  
Formula      C6H4(NH2)2  






















* These properties are drawn from various DuPont and other literature sources. DuPont does not make any warranty, express or implied, that future production will demonstrate these typical properties.

Shipping Information

PPD flakes are supplied in fiber drums and 500-kg bulk bags. Other sizes are available on request. Molten PPD is supplied in tank trucks, tank cars, and ISO tanks.