|Selenium Dioxide||≥98.0 %||0.981|
|Hydrochloric acid insoluble||≤ 0.02 %||0.000015|
|Fe||≤ 0.002 %||0.000008|
|Loss on drying||≤ 1.0 %||0.3%|
|Selenate and sulphate||≤ 0.1 %||0.0007|
|Water dissolution test||eligible||eligible|
|Selenium dioxide Chemical Properties|
|Melting point||315 °C (subl.)(lit.)|
|Boiling point||684.9 °C(lit.)|
|density||4.81 g/mL at 25 °C(lit.)|
|vapor pressure||1 mm Hg ( 157 °C)|
|refractive index||nD20 <1.76|
|storage temp.||Store below +30°C.|
|PH||2 (10g/l, H2O, 20℃)|
|Water Solubility||38.4 g/100 mL (14 ºC)|
|Stability:||Stable. Incompatible with organic materials, strong acids, ammonia, nitric acid, halogen acids. Protect from moisture.|
|CAS DataBase Reference||7446-08-4(CAS DataBase Reference)|
|NIST Chemistry Reference||Selenium dioxide(7446-08-4)|
|EPA Substance Registry System||Selenium dioxide (7446-08-4)|
|RIDADR||UN 3440 6.1/PG 3|
|HS Code||2811 29 90|
|Hazardous Substances Data||7446-08-4(Hazardous Substances Data)|
|Toxicity||LD50 orally in Rabbit: 68.1 mg/kg|
Selenium dioxide CAS:7446-08-4
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