General Description
Dark red plates, needles or reddish-purple powder. Melting point 125-127°C.
Reactivity Profile
4-AMINO-2-NITROPHENOL(119-34-6) may react with strong oxidizing agents, strong bases, acid chlorides and acid anhydrides .
Air & Water Reactions
Sensitive to oxidation upon prolonged exposure to air. Insoluble in water.
Potential Exposure
In dye formulation for furs and hair
Fire Hazard
Flash point data for this chemical are not available. 4-AMINO-2-NITROPHENOL is probably combustible.
First aid
Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Medical observation is recommended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consider administering a drug or other inhalation therapy.
Shipping
UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required. UN3143 Dyes, solid, toxic, n.o.s. or Dye intermediates, solid, toxic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required
Incompatibilities
Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. It is unknown if this nitro compound is explosive; some are flammable and explosive, and the contact with alkali increases thermal sensitivity of these materials.
Chemical Properties
4-Amino-2-nitrophenol is a dark red crystalline or reddish-purple solid.
Chemical Properties
DARK BROWN FINE CRYSTALLINE POWDER
Uses
4-Amino-2-nitrophenol has been used in dyeing human hair
and animal fur. The typical concentration in the “semipermanent”
hair dyes was estimated to be on the order of
0.1–1.0%.
Uses
4-Amino-2-nitrophenol was used in determination of aminonitrophenols in hair dyes by differential pulse voltammetry and HPLC with electrochemical detection. It is commonly used as semipermanent (nonoxidative) hair colorant and toner in permanent (oxidative) hair dye products.
Definition
ChEBI: 4-Amino-2-nitrophenol is a member of 2-nitrophenols.
Carcinogenicity
Under the conditions of the bioassay, the compound was
carcinogenic in male rats inducing transitional cell carcinomas
of the urinary bladder (controls 0/15, lowdose 0/46, high
dose 11/39). The same tumor was also observed in three
dosed female rats and may have been associated with the
administration of the chemical. No evidence of carcinogenic
activity was found in the mice.
