Selenous acid, 97%, Thermo Scientific Chemicals

Product Code	Brand	Quantity
11397417	Thermo Scientific Alfa Aesar 012574.06	5 g
11377417	Thermo Scientific Alfa Aesar 012574.18	50 g
11387417	Thermo Scientific Alfa Aesar 012574.30	250 g

Description

As an oxidizing agent, as a reagent for alkaloidsSelenous acid is used in steel guns, wherein it changes the color of the steel from silver-grey to blue-grey. It serves as an important component of the Mecke reagent, which is utilized for drug testing. It acts as a source of selenium. It acts as a reagent for alkaloids and an oxidizing agent. Further, it is used in labeling radiopharmaceuticals. It is involved in the organic synthesis for the preparation of glyoxal.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Chemical Identifiers

• CAS: 7783-00-8
• Molecular Weight (g/mol): 128.98
• InChI Key: MCAHWIHFGHIESP-UHFFFAOYSA-N
• PubChem CID: 1091
• IUPAC Name: selenous acid

• Molecular Formula: H2O3Se
• MDL Number: MFCD00011331
• Synonym: selenious acid, selenious acid h2seo3, monohydrated selenium dioxide, unii-f6a27p4q4r, selenium dioxide, monohydrated, ccris 5530, selenious acid usp, selenious acid,selenous acid,monohydrated selenium dioxide, selenium, reference standard solution
• ChEBI: CHEBI:26642
• SMILES: O[Se](O)=O

Specifications

• Color: Colorless
• Melting Point: 70°C (decomposition)
• Odor: Odorless
• Assay Percent Range: 97%
• Physical Form: -4 Mesh Crystalline
• Synonym: selenious acid, selenious acid h2seo3, monohydrated selenium dioxide, unii-f6a27p4q4r, selenium dioxide, monohydrated, ccris 5530, selenious acid usp, selenious acid,selenous acid,monohydrated selenium dioxide, selenium, reference standard solution
• InChI Key: MCAHWIHFGHIESP-UHFFFAOYSA-N
• IUPAC Name: selenous acid
• PubChem CID: 1091
• Formula Weight: 128.97

• CAS: 7783-00-8
• Density: 3.004g/cm³ at 20°C
• Sensitivity: Hygroscopic
• Molecular Formula: H2O3Se
• MDL Number: MFCD00011331
• Solubility Information: Freely soluble in water,alcohol. Insoluble in ammoniaSoluble in water and ethanol.
• SMILES: O[Se](O)=O
• Molecular Weight (g/mol): 128.98
• ChEBI: CHEBI:26642
• Chemical Name or Material: Selenous acid

Safety and Handling

P260-P264b-P270-P271-P301+P310-P304+P340-P311-P314-P330-P501c

H301+H331-H373

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missing translation for 'einecsNumber' : 231-974-7

missing translation for 'tsca' : Yes

Recommended Storage : Ambient temperatures

Product Identifier

• Selenous acid

Signal Word

• Danger

Hazard Category

• Acute toxicity Category 3
• LONG-TERM AQUATIC HAZARD Chronic 1
• ACUTE AQUATIC Acute 1
• Specific target organ toxicity after repeated exposure Category 2

Hazard Statement

• H301-Toxic if swallowed.
• H331-Toxic if inhaled.
• H373-May cause damage to organs.
• H400-Very toxic to aquatic life.
• H410-Very toxic to aquatic life with long lasting effects.

Precautionary Statement

• P260-Do not breathe dust/fume/gas/mist/vapours/spray.
• P273-Avoid release to the environment.
• P301+P310-IF SWALLOWED: Immediately call a POISON CENTER/doctor /
• P304+P340-IF INHALED: Remove person to fresh air and keep comfortable for breathing.

Supplemental information

• MIXTURE LIST-Contains : Selenous acid

RUO – Research Use Only