Melting point :259-261 °C (dec.) (lit.)
Boiling point :246.06°C (rough estimate)
Density :1.0924 (rough estimate)
vapor pressure :0-0Pa at 25℃
refractive index :1.5418 (estimate)
Flash point :252°C
storage temp. :Inert atmosphere,Room Temperature
solubility :0.6g/l
form :Solid
pka :9.28±0.40(Predicted)
color :Pale Beige to Very Dark Brown
PH :6 (0.5g/l, H2O, 20℃)
Water Solubility :Soluble in water.
BRN :2044951
Cosmetics Ingredients Functions :HAIR DYEING
InChI :1S/C10H8O2/c11-9-5-1-3-7-8(9)4-2-6-10(7)12/h1-6,11-12H
InChIKey :BOKGTLAJQHTOKE-UHFFFAOYSA-N
SMILES :Oc1cccc2c(O)cccc12
LogP :1.7-1.82 at 23℃
CAS DataBase Reference :83-56-7(CAS DataBase Reference)
NIST Chemistry Reference :1,5-Naphthalenediol(83-56-7)
EPA Substance Registry System :1,5-Naphthalenediol (83-56-7)

Symbol(GHS):
Signal word:	Warning
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 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
Precautionary statements:	P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P270 Do not eat, drink or smoke when using this product. 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. P337+P313 IF eye irritation persists: Get medical advice/attention.