Melting point :132-144°C
Boiling point :229.19°C (rough estimate)
Density :1.3147 (rough estimate)
vapor pressure :0.003Pa at 20℃
refractive index :1.5423 (estimate)
solubility :soluble in Methanol
form :powder to crystal
pka :pK1:6.48 (25°C)
color :Pale-yellow, orthorhombic needles
Water Solubility :<0.1 g/100 mL at 21 ºC
Merck :14,6642
Stability :Stability Flammable. Incompatible with strong oxidizing agents. Explodes when heated, or in contact with acids or alkalies.
LogP :1.1 at 20℃
CAS DataBase Reference :104-91-6(CAS DataBase Reference)
NIST Chemistry Reference :Phenol, 4-nitroso-(104-91-6)
EPA Substance Registry System :p-Nitrosophenol (104-91-6)

Symbol(GHS):
Signal word:	Danger
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 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310 H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501 H411 Toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 2
Precautionary statements:	P241 Use explosion-proof electrical/ventilating/lighting/…/equipment. 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.