Melting point :80-82 °C(lit.)
Boiling point :218 °C(lit.)
Density :1.242 g/cm3
vapor density :4.4 (vs air)
vapor pressure :0.03 mm Hg ( 25 °C)
refractive index :1.58075 (589.3 nm 98℃)
Flash point :174 °F
storage temp. :2-8°C
solubility :Chloroform (Slightly), Methanol (Slightly)
form :Crystals or Crystalline Powder
color :White
explosive limit :0.9-5.9%(V)
Stability :Stable. Incompatible with oxidizing agents. Flammable.
CAS DataBase Reference :1146-65-2(CAS DataBase Reference)
EPA Substance Registry System :Naphthalene-d8 (1146-65-2)

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 H351 Suspected of causing cancer Carcinogenicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501 H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P240 Ground/bond container and receiving equipment. P273 Avoid release to the environment. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P308+P313 IF exposed or concerned: Get medical advice/attention.