Melting point :218-221 °C(lit.)
Boiling point :283.17°C (rough estimate)
Density :1.43 g/cm3 (23℃)
refractive index :1.7160 (estimate)
Flash point :>150°C
storage temp. :Sealed in dry,Room Temperature
solubility :0.072g/l practically insoluble
form :Fine Crystalline Powder
pka :3.02±0.30(Predicted)
color :Yellow to beige-brown
Water Solubility :PRACTICALLY INSOLUBLE
λmax :395nm(H2O (pH 3.5))(lit.)
Merck :14,4835
BRN :744100
CAS DataBase Reference :92-70-6(CAS DataBase Reference)
NIST Chemistry Reference :2-Naphthalenecarboxylic acid, 3-hydroxy-(92-70-6)
EPA Substance Registry System :3-Hydroxy-2-naphthoic acid (92-70-6)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P273 Avoid release to the environment. 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. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.