Selenous Acid 93% Extrapure
Confirms to USP
Selenious acid
Product Code. |
02291 |
Grade |
|
Purity |
93% |
CAS No. |
7783-00-8 |
Molecular Formula |
H2SeO3 |
Molecular Weight |
128.97 |
H.S.Code |
2811.19900 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
White crystalline |
pH value |
7 |
| Melting point/ Freezing point [°C] |
70 °C |
Density [g/cm3] |
3.004 |
Solubility in water [% weight] |
Soluble in cold water |
Packaging
Specification
| Appearance | White crystalline powder |
| Assay (as H2SeO3) | 93 - 101% |
| Residue on ignition (as SO4) | Max 0.01% |
| Selenate and sulphate | Passes USP test |
| Insoluble matter | 1 gm in 5 ml water gives clear solution |
Safety Information and Hazard Symbols
Symbol: GHS06, GHS08, GHS09
Signal Word: Danger
UN No.: 3283
IMCO Class No.: 6.1
Packing Group: II
Hazardous Statement: H301-H331-H373-H410
Precaution Statement: P261-P273-P301 + P310-P311-P501