Quick Search
p-Phenylenediamine is an aromatic amine compound widely used in hair dyes, rubber chemicals, textile dyes, and as an intermediate in the synthesis of various industrial products.
p-Phenylenediamine belongs to the group of phenylenediamine isomers, characterized by two amino groups positioned para (1,4) on the benzene ring.
p-Phenylenediamine is valued for its strong reactivity with oxidizing agents, enabling its role in permanent hair color formulations and polymer chemistry.
CAS Number: 106-50-3
EC Number: 203-404-7
Molecular Formula: C6H8N2
Molecular Weight: 108.14 g/mol
Synonyms: p-Phenylenediamine, PPD, 1,4-Phenylenediamine, 4-Aminoaniline, para-Phenylenediamine, Oxidation dye intermediate PPD, Hair dye base p-phenylenediamine, Rubber antioxidant PPD, p-Aminoaniline, p-Diaminobenzene, 1,4-Benzenediamine, Textile dye intermediate PPD, Permanent hair color ingredient PPD, Polymer intermediate p-phenylenediamine, Antioxidant chemical PPD
APPLICATIONS
p-Phenylenediamine is widely used in the cosmetic industry as a primary intermediate in permanent hair dye formulations.
p-Phenylenediamine is employed in oxidative hair coloring systems to achieve natural-looking dark shades.
p-Phenylenediamine is applied in beard dyes and eyebrow coloring products.
p-Phenylenediamine is incorporated into rubber manufacturing as an antioxidant.
p-Phenylenediamine is used in rubber processing to protect against oxidative degradation.
p-Phenylenediamine is applied in tire and industrial rubber products for long-term durability.
p-Phenylenediamine is utilized in textile dyeing as an intermediate.
p-Phenylenediamine is used to produce azo dyes and other synthetic colorants.
p-Phenylenediamine is applied in fabric printing inks.
p-Phenylenediamine is employed in polymer chemistry as a curing agent.
p-Phenylenediamine is used in epoxy resin curing formulations.
p-Phenylenediamine is applied in polyurethane and adhesive systems.
p-Phenylenediamine is incorporated into photographic developing agents.
p-Phenylenediamine is used in color-developing chemicals in photographic processing.
p-Phenylenediamine is applied in film and paper development.
p-Phenylenediamine is utilized in agrochemical synthesis.
p-Phenylenediamine is used in the production of herbicides and insecticides.
p-Phenylenediamine is applied in fungicide intermediate production.
p-Phenylenediamine is employed in pharmaceuticals as an intermediate.
p-Phenylenediamine is used in drug synthesis for antihistamines and other compounds.
p-Phenylenediamine is applied in veterinary medicine intermediates.
p-Phenylenediamine is included in specialty coatings.
p-Phenylenediamine is used in polymeric coatings for enhanced adhesion.
p-Phenylenediamine is applied in specialty inks for industrial use.
p-Phenylenediamine is incorporated into advanced materials.
p-Phenylenediamine is used in nanomaterials research.
p-Phenylenediamine is applied in conductive polymer formulations.
P-Phenylenediamine is used in the production of hair dyes.
P-Phenylenediamine is incorporated into oxidative hair coloring formulations for long-lasting results.
P-Phenylenediamine is applied in combination with couplers to achieve natural shades.
P-Phenylenediamine is used in the rubber industry.
P-Phenylenediamine is incorporated into rubber antioxidants.
P-Phenylenediamine is applied in vulcanization accelerators for tire manufacturing.
P-Phenylenediamine is used in the synthesis of dyes and pigments.
P-Phenylenediamine is incorporated into azo dye production for textiles.
P-Phenylenediamine is applied in the manufacture of disperse and reactive dyes.
P-Phenylenediamine is used in photographic chemicals.
P-Phenylenediamine is incorporated into developing agents.
P-Phenylenediamine is applied in stabilizers for film processing.
P-Phenylenediamine is used in the pharmaceutical industry.
P-Phenylenediamine is incorporated into intermediates for drug synthesis.
P-Phenylenediamine is applied in the production of local anesthetics and antimalarials.
P-Phenylenediamine is used in epoxy curing agents.
P-Phenylenediamine is incorporated into resin systems.
P-Phenylenediamine is applied in adhesives and coatings for enhanced performance.
P-Phenylenediamine is used in polymer chemistry.
P-Phenylenediamine is incorporated into engineering plastics as a stabilizer.
P-Phenylenediamine is applied in specialty polymers for electronics.
P-Phenylenediamine is used in agrochemical synthesis.
P-Phenylenediamine is incorporated into pesticide intermediates.
P-Phenylenediamine is applied in herbicide formulations.
P-Phenylenediamine is used in textile dyeing processes.
P-Phenylenediamine is incorporated into permanent fabric dye systems.
P-Phenylenediamine is applied in synthetic fiber coloration.
P-Phenylenediamine is used in research laboratories.
P-Phenylenediamine is incorporated into organic synthesis as a building block.
P-Phenylenediamine is applied in model studies of aromatic amines.
P-Phenylenediamine is used in leather dyeing.
P-Phenylenediamine is incorporated into formulations for deep black shades.
P-Phenylenediamine is applied in finishing treatments for natural leather.
P-Phenylenediamine is used in antioxidants for fuels and lubricants.
P-Phenylenediamine is incorporated into formulations to prevent oxidation.
P-Phenylenediamine is applied in stabilizers for petroleum products.
DESCRIPTION
P-Phenylenediamine is an aromatic amine with two amino groups positioned para to each other on a benzene ring.
P-Phenylenediamine appears as a white to slightly purple crystalline solid that darkens upon air exposure.
P-Phenylenediamine is slightly soluble in water and readily soluble in alcohol and ether.
P-Phenylenediamine is highly reactive and easily oxidized, especially in alkaline conditions.
P-Phenylenediamine is a primary intermediate in permanent hair dyes due to its oxidative coupling properties.
P-Phenylenediamine is toxic and may cause allergic reactions upon skin contact.
P-Phenylenediamine is industrially produced by the reduction of p-nitroaniline.
P-Phenylenediamine undergoes oxidation to form colored compounds, making it useful in dyes.
P-Phenylenediamine is regulated in cosmetics due to safety concerns and maximum allowable concentrations.
P-Phenylenediamine is widely used in hair dyes, rubber processing, dye synthesis, and as a chemical intermediate.
p-Phenylenediamine is a white to light purple crystalline solid that darkens upon exposure to air.
p-Phenylenediamine has a faint amine-like odor.
p-Phenylenediamine is soluble in water, ethanol, and ether.
p-Phenylenediamine is easily oxidized, forming dark-colored products in the presence of oxygen.
p-Phenylenediamine is a strong reducing agent in oxidative dye chemistry.
p-Phenylenediamine is stable under recommended storage but sensitive to light and air.
p-Phenylenediamine is classified as a skin sensitizer and may cause allergic reactions.
p-Phenylenediamine is potentially toxic upon ingestion or prolonged exposure.
p-Phenylenediamine is biodegradable in the environment but may present aquatic toxicity.
p-Phenylenediamine requires strict handling and protective measures in cosmetic and industrial use.
PROPERTIES
Chemical Formula: C6H8N2
Molecular Weight: 108.14 g/mol
Common Name: p-Phenylenediamine (PPD)
Appearance: White to light purple crystalline solid (darkens with air)
Odor: Faint amine-like odor
Density: ~1.16 g/cm³
Melting Point: 140–145°C
Boiling Point: Sublimes (decomposes before boiling)
Flash Point: ~150°C (closed cup)
Solubility: Soluble in water, ethanol, ether
Reactivity: Readily oxidizes with air; reacts strongly with oxidizing agents
Chemical Stability: Stable when stored away from light and oxygen
Storage Temperature: Store at 2–8°C in airtight containers, protected from light
FIRST AID
Inhalation:
If p-Phenylenediamine dust or vapors are inhaled, move person to fresh air immediately.
Seek medical attention if coughing, dizziness, or respiratory distress occurs.
Provide oxygen if breathing difficulties develop.
Skin Contact:
Wash thoroughly with soap and plenty of water after contact with p-Phenylenediamine.
Seek immediate medical attention if rash, irritation, or burns occur.
Remove contaminated clothing and wash before reuse.
Eye Contact:
Rinse eyes with water for at least 15 minutes.
Seek immediate medical attention if redness, pain, or vision disturbances occur.
Remove contact lenses if present and continue rinsing.
Ingestion:
If p-Phenylenediamine is swallowed, rinse mouth thoroughly with water.
Do not induce vomiting unless directed by medical personnel.
Seek immediate medical attention.
Note to Physicians:
Treat symptomatically.
Monitor for allergic sensitization and respiratory irritation.
Provide supportive care as required.
HANDLING AND STORAGE
Handling:
Personal Protection:
Wear gloves, goggles, and protective clothing when handling p-Phenylenediamine.
Use respiratory protection in areas with inadequate ventilation.
Ventilation:
Provide local exhaust ventilation to minimize dust and vapor exposure.
Avoid accumulation of oxidized byproducts.
Avoidance:
Avoid contact with skin, eyes, and clothing.
Do not eat, drink, or smoke during handling.
Wash hands thoroughly after handling.
Spill and Leak Procedures:
Sweep up spilled material carefully, avoiding dust generation.
Collect into sealed containers for proper disposal.
Dispose of according to local regulations.
Storage:
Store p-Phenylenediamine in a cool, dry, and well-ventilated area.
Keep containers tightly closed and protected from light and oxygen.
Avoid contact with strong oxidizers and acids.
Handling Cautions:
Prevent exposure that could lead to sensitization.
Maintain strict labeling and secure handling due to toxicological risks.
Ensure regulatory compliance when used in cosmetics and industrial processes.
