p-Phenylenediamine(PPD)

Basic Information

CAS No.	106-50-3
EC No.	203-404-7
Linear Formula	H2NC6H4NH2
Molecular Weight	108.14 g/mol
Appearance	White to purplish-red crystals
Melting Point	138-140 °C (lit.)
Boiling point	267 °C (lit.)
Density	1.14 g/cm³ (lit.)
RIDADR	UN 1673 Class 6.1 Packing Group III
Chemical Structure

Key Applications

• Hair dye intermediate: Essential developer in oxidative coloring for permanent shades.

• Rubber antioxidant: Used to protect vulcanized rubber from aging and cracking.

• Dye synthesis: Precursor for azo dyes in textiles and leather.

• Polymer curing agent: Applied in epoxy resins and polyurethanes.

• Photographic developer: Employed in black-and-white film processing.

• High purity specifications and strict batch consistency: Verified through comprehensive analysis.

• Efficient international shipping and bulk supply capability: Accommodates global volume demands.

• Compliance with international safety and transportation standards: Includes full SDS and COA provision.

• Assistance with packaging selection and shipment planning: Tailored to ensure product integrity.

Hazards Classification

GHS Classification: Acute toxicity (oral) Category 3 (GHS06); Acute toxicity (dermal) Category 3 (GHS06); Acute toxicity (inhalation) Category 3 (GHS06); Skin sensitization Category 1 (GHS07); Hazardous to the aquatic environment, acute Category 1 (GHS09).

Hazard Statements: H301 + H311 + H331 Toxic if swallowed, in contact with skin or if inhaled; H317 May cause an allergic skin reaction; H400 Very toxic to aquatic life.

UN Number: 1673

Hazard Class: 6.1 (Toxic substances)

Packing Group: III

Toxic solid that can cause sensitization. Store in tightly sealed containers in a cool, dry place protected from air and light. Handle in ventilated areas with full PPE to avoid inhalation and contact.