Melting point :86 °C
Boiling point :297 °C(lit.)
Density :1.575
vapor pressure :8.15 x 10^-4 mmHg at 35 °C (Hine et al., 1963)
refractive index :1.4660 (estimate)
Flash point :150 °C
storage temp. :2-8°C
solubility :Chloroform (Sparingly), DMSO (Slightly), Methanol (Very Slightly)
form :solid
Specific Gravity :1.368
color :White to yellowish crystals
Water Solubility :500 mg/L (20 ºC)
Merck :14,3273
BRN :1105654
Dielectric constant :2.8（20.0℃）
Exposure limits :NIOSH REL: TWA 1, IDLH 50; OSHA PEL: TWA 1; ACGIH TLV: TWA 0.15 ppm for all isomers (adopted).
Stability :Stable. Incompatible with reducing agents, oxidizing agents, strong bases. May explode if heated.
CAS DataBase Reference :99-65-0(CAS DataBase Reference)
NIST Chemistry Reference :Benzene, 1,3-dinitro-(99-65-0)
EPA Substance Registry System :m-Dinitrobenzene (99-65-0)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, 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:	P262 Do not get in eyes, on skin, or on clothing. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P314 Get medical advice/attention if you feel unwell.