Melting point :58°C
Boiling point :260°C
Density :1.407 g/mL at 25 °C
refractive index :n20/D 1.5174(lit.)
Flash point :>230 °F
solubility :Miscible with sulfuric acid. Immiscible with ammonia.
form :Liquid
pka :4.19±0.10(Predicted)
color :Colorless
PH :2.74(1 mM solution);1.83(10 mM solution);0.97(100 mM solution)
Water Solubility :g/100g H2O: 426 (0°C), 567 (20°C), 1328 (30°C) [LAN05]; decomposed by alcohol [HAW93]
Merck :14,8429
Exposure limits :ACGIH: TWA 0.2 mg/m3
NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3 Stability :Stable, but decomposes on heating. Non-flammable. Incompatible with metals, combustible materials. Hygroscopic.
CAS DataBase Reference :7783-08-6(CAS DataBase Reference)
EPA Substance Registry System :Selenic acid (7783-08-6)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310 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. P280 Wear protective gloves/protective clothing/eye protection/face protection. P314 Get medical advice/attention if you feel unwell.