Selenous acid
ALDRICH/229857 - 99.999% trace metals basis
Synonym: Selenious acid
CAS Number: 7783-00-8
Empirical Formula (Hill Notation): H2O3Se
Molecular Weight: 128.97
EC Number: 231-974-7
MDL Number: MFCD00011331
Linear Formula: H2SeO3
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 229857-500G
| assay | 99.999% trace metals basis |
| density | 3.004 g/mL at 25 °C (lit.) |
| form | solid |
| InChI | 1S/H2O3Se/c1-4(2)3/h(H2,1 |
| InChI key | MCAHWIHFGHIESP-UHFFFAOYSA |
| mp | 70 °C (dec.) (lit.) |
| Quality Level | 200  |
| SMILES string | O[Se](O)=O |
| Application: |
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| General description: | Selenous acid is a dibasic acid. It is the oxoacid of selenium and can be formed by adding selenium dioxide gas to water. Selenous acid shows analogy to sulfurous acid. As a crystalline solid, the molecules are arranged in a pyramid and in a solution it behaves as a diprotic acid. |
| Packaging: | 50, 500 g in glass bottle |
| Packaging: | Packaged in High-Density Polyethylene (HDPE) |
).| Symbol |    GHS06,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H301 + H331 - H373 - H410 |
| Precautionary statements | P260 - P264 - P273 - P301 + P310 - P304 + P340 + P311 - P314 |
| Hazard Codes | T,N |
| Risk Statements | 23/25-33-50/53 |
| Safety Statements | 20/21-28-45-60-61 |
| RIDADR | UN 3283 6.1 / PGII |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | 99.999% trace metals basis |
| mp | 70 °C (dec.) (lit.) |
| Density | 3.004 g/mL at 25 °C (lit.) |
| UNSPSC | 12352300 |