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About This Item
Linear Formula:
H2SeO3
CAS Number:
Molecular Weight:
128.97
EC Number:
MDL number:
UNSPSC Code:
12352301
PubChem Substance ID:
NACRES:
NA.22
Recommended Products
Quality Level
Assay
98%
form
solid
mp
70 °C (dec.) (lit.)
density
3.004 g/mL at 25 °C (lit.)
SMILES string
O[Se](O)=O
InChI
1S/H2O3Se/c1-4(2)3/h(H2,1,2,3)
InChI key
MCAHWIHFGHIESP-UHFFFAOYSA-N
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Application
Selenous acid can be used as a reagent to synthesize:
- α-Ketoacectals by reacting with acetophenones and triethylorthoformate in the presence of boron trifluoride etherate as a catalyst.
- 4-Formyl-7-methylcoumarin using 4,7-dimethylcoumarin in the presence of xylene as a solvent.
- Selenium substituted quinoxaline derivatives from 2,3-dichloro quionoxaline.
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - STOT RE 2
Storage Class Code
6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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