1,4-Phenylenediamine
CAS 106-50-3
EC 203-404-7
Formula C6H8N2
MW 108.14 g/mol
Amines Personal Care & CosmeticsTextile, Leather & PaperPlastics & Polymers Surface Modification & WettingCross-linking & CuringFlame Retardancy
Description
1,4-Phenylenediamine (CAS 106-50-3), commonly abbreviated as pPDA and sold under trade names including Benzofur D, JAROCOL PPD, and Developer PF, is an aromatic diamine classified under EC 203-404-7. It carries no assigned E-code and is categorised within the amine chemical family.
In textile and leather dyeing, pPDA functions as an oxidative colorant by undergoing coupling reactions with dye intermediates to produce deep, durable blacks and browns on fibre surfaces. In polymer manufacturing, its bifunctional amine groups react with epoxies and isocyanates to form crosslinked networks, improving thermal and mechanical resistance in finished materials.
This material is supplied as a white to slightly red crystalline powder or flakes and is subject to REACH registration requirements within the EU. Procurement teams should confirm SDS compliance and substance restrictions under SVHC candidate list reviews before ordering. Standard industrial packaging formats apply; contact our team for available grades and lot documentation.
In textile and leather dyeing, pPDA functions as an oxidative colorant by undergoing coupling reactions with dye intermediates to produce deep, durable blacks and browns on fibre surfaces. In polymer manufacturing, its bifunctional amine groups react with epoxies and isocyanates to form crosslinked networks, improving thermal and mechanical resistance in finished materials.
This material is supplied as a white to slightly red crystalline powder or flakes and is subject to REACH registration requirements within the EU. Procurement teams should confirm SDS compliance and substance restrictions under SVHC candidate list reviews before ordering. Standard industrial packaging formats apply; contact our team for available grades and lot documentation.
Physical Properties
| Melting Point | 145-147 °C |
| Boiling Point | 267 °C |
| Density | 1.1 g/cm³ |
| Flash Point | 156 °C |
| Appearance | p-Phenylenediamines are white to slightly red crystalline solids. They have been described as gray “light brown” which may result from exposure to air. |
| Color | White, gray, or purple to brown |
| Form | Powder or Flakes |
| Water Solubility | 47 g/L (25 ºC) |
| Vapor Pressure | 1.08 mm Hg ( 100 °C) |
| Refractive Index | 1.6339 (estimate) |
| pH | 9 (50g/l, H2O, 20℃) |
| Log P | -0.84 at 20℃ |
Safety & Handling (Learn More)
Danger GHS06 GHS09 GHS07 GHS08 GHS05
H
H301H311H315H317H318H319H320H331H333H334H370H372H373H400H410H301+H311+H331
P
P233P260P261P262P264P270P271P272P273P280P284P316P317P319P321P330P391P403P405P501P264+P265P301+P316P302+P352P304+P317P304+P340P308+P316P332+P317P333+P317P337+P317P342+P316P361+P364P362+P364P403+P233P305+P351+P338P305+P354+P338
Trade & Regulatory
| HS Code | 29215119 |
| UN Number | 1673 |
| ADR Class | 6.1 |
| Packing Group | III |
| Storage Class | 6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects |
| WGK (Germany) | 3 |
Other Names
P-Phenylenediaminebenzene-1,4-diaminePPDpPDA4-AminoanilineBenzofur DC.I. 76060JAROCOL PPD
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Raw Materials
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