Melting point :70 °C (dec.) (lit.)
Boiling point :684.9 °C(lit.)
Density :3.004 g/mL at 25 °C (lit.)
vapor pressure :2.7hPa at 15℃
Flash point :690°C
storage temp. :Store at RT.
solubility :H₂O: soluble
form :powder
pka :2.46(at 25℃)
color :White to almost white or light pink
Specific Gravity :3.004
PH :3.15(1 mM solution);2.47(10 mM solution);1.9(100 mM solution)
Water Solubility :167 g/100 mL (20 ºC)
Sensitive :Hygroscopic
Merck :14,8430
Exposure limits :ACGIH: TWA 0.2 mg/m3
NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3 Stability :Stable.
CAS DataBase Reference :7783-00-8(CAS DataBase Reference)
EPA Substance Registry System :Selenious acid (H2SeO3) (7783-00-8)

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:	P273 Avoid release to the environment. P314 Get medical advice/attention if you feel unwell.