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An intermediate used in the synthesis of engineering polymers, para-aramid fibers, polyimides, hair dyes, rubber chemicals, textile dyes and pigments. p-PDA is selected for the outstanding properties it imparts, including high temperature stability, high strength and chemical and electrical resistance.
Advantages Of P-Phenylenediamine
Using the independently developed liquid-phase catalytic hydrogenation reduction production technology, the process is clean and environment-friendly, and the quality and output are stable.
25kgs Fiber Drum, other packages are available on request.
Specification Of P-Phenylenediamine
Property | Unit | Min. | Max. |
Appearance | White flake | ||
Initial melting point | °C(≥) | 138.00 | |
p-Phenylene diamine | %(≥) | 99.90 | |
o-Phenylene diamine | mg/kg(≤) | 400 | |
m-Phenylene diamine | mg/kg(≤) | 400 | |
Aniline | mg/kg | – | |
p-Chloroaniline | mg/kg(≤) | 100 | |
Manufacturing
