Melting point :131-133 °C
Boiling point :391.35°C (rough estimate)
Density :1.1077 (rough estimate)
vapor pressure :0Pa at 25℃
refractive index :1.5800 (estimate)
storage temp. :Sealed in dry,Room Temperature
solubility :DMSO (Slightly), Ethyl Acetate (Slightly)
form :Powder
pka :13.50±0.40(Predicted)
Colour Index :12055
color :Orange to red or brown
Water Solubility :0.5 g/L (30 ºC)
Stability :Incompatible with strong oxidizing agents.
LogP :5.51
CAS DataBase Reference :842-07-9(CAS DataBase Reference)
IARC :3 (Vol. 8, Sup 7) 1987
NIST Chemistry Reference :2-Naphthalenol, 1-(phenylazo)-(842-07-9)
EPA Substance Registry System :C.I. Solvent Yellow 14 (842-07-9)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501 H351 Suspected of causing cancer Carcinogenicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501 H413 May cause long lasting harmful effects to aquatic life Hazardous to the aquatic environment, long-term hazard Category 4
Precautionary statements:	P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P302+P352 IF ON SKIN: wash with plenty of soap and water. P308+P313 IF exposed or concerned: Get medical advice/attention.