IUPAC: 5-(4-nitrophenyl)-1H-pyrazol-3-amine (78583-83-2)
Synonyms: 5-(4-nitrophenyl)-2H-pyrazol-3-ylamine ; 5-(4-nitro-phenyl)-1(2)H-pyrazol-3-ylamine ; 5-(4-nitrophenyl)-1H-pyrazol-3-amine ; 5-(4-nitrophenyl)-2h-pyrazol-3-ylamine 5-(4-nitrophenyl)-1h-pyrazol-3-amine 5-(4-nitro-phenyl)-2h-pyrazol-3-ylamine ; 3-(4-nitrophenyl)-1h-pyrazol-5 ; 5-(4-nitrophenyl)-2h-pyrazol-3-ylamine 
CAS: 78583-83-2
MF: C₉H₈N₄O₂
MW: 204.19
MS:
Product Categories: pharmacetical;API intermediates
Mol File: 78583-83-2.mol
MP: 255-259°C
Surface Tension: 76.8 dyne/cm  Density: 1.454 g/cm3 
Flash Point: 274.4 °C  Enthalpy of Vaporization: 80.52 kJ/mol 
Boiling Point: 530 °C at 760 mmHg  Vapour Pressure: 2.55E-11 mmHg at 25°C  
 

1.5-(4-nitrophenyl)-1H-pyrazol-3-amine (78583-83-2) is irritating to skin, eyes, and respiratory system.
2.May have harmful effects if inhaled or swallowed.
3.Avoid prolonged exposure.
4.Do not breathe vapor.
5.Use caution when handling.
6.Exposure to any chemical should limited.

1.Extinguishing media: carbon dioxide, dry chemical powder, alcohol or polymer foam.
Special fire-fighting procedures: Wear self-contained breathing apparatus and protective
clothing to prevent contact with skin and eyes.
Unusual fire and explosion hazards/decomposition of product: emits toxic fumes under fire
conditions.
2.Wash thoroughly after handling.
Do not breathe dust or vapor.
Have safety shower and eye wash available.
Do not get 5-(4-nitrophenyl)-1H-pyrazol-3-amine (78583-83-2) in eyes, on skin, on clothing.
Keep container tightly closed.
Store in a cool, dry, well-ventilated area.
Ensure adequate ventilation during use.
Use only in a chemical fume hood.
3.Avoid sources of ignition.
Steps to be taken if 5-(4-nitrophenyl)-1H-pyrazol-3-amine (78583-83-2) is released or spilled: Wear appropriate respirator, rubber boots
and heavy rubber gloves. Scoop up and place in an appropriate container. Ventilate area and
wash spill site after pickup is complete. Wash skin immediately with plenty of water. Absorb on
sand or vermiculite and place in closed containers for disposal.
4.Dissolve in or mix the material with a combustible solvent and burn in a chemical incinerator
equipped with an afterburner and scrubber. Observe all Federal, State and local laws.