Melting point :156 °C (dec.)(lit.)
Boiling point :276.04°C (rough estimate)
Density :1.00
refractive index :1.6910 (estimate)
storage temp. :Explosives area
pka :3.81±0.20(Predicted)
color :Orange-red leaflets or needles
Water Solubility :soluble in hot water
Merck :14,6624
BRN :608107
CAS DataBase Reference :100-16-3(CAS DataBase Reference)
NIST Chemistry Reference :P-nitrophenyl hydrazine(100-16-3)
EPA Substance Registry System :Hydrazine, (4-nitrophenyl)- (100-16-3)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H228 Flammable solid Flammable solids Category 1 Category 2 Danger Warning P210, P240,P241, P280, P370+P378 H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H312 Harmful in contact with skin Acute toxicity,dermal Category 4 Warning P280,P302+P352, P312, P322, P363,P501 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P240 Ground/bond container and receiving equipment. P241 Use explosion-proof electrical/ventilating/lighting/…/equipment. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P270 Do not eat, drink or smoke when using this product. P272 Contaminated work clothing should not be allowed out of the workplace. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P302+P352 IF ON SKIN: wash with plenty of soap and water. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P312 Call a POISON CENTER or doctor/physician if you feel unwell. P321 Specific treatment (see … on this label). P322 Specific measures (see …on this label). P330 Rinse mouth. P332+P313 IF SKIN irritation occurs: Get medical advice/attention. P333+P313 IF SKIN irritation or rash occurs: Get medical advice/attention. P362 Take off contaminated clothing and wash before reuse. P363 Wash contaminated clothing before reuse. P370+P378 In case of fire: Use … for extinction. P501 Dispose of contents/container to..…