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7783-00-8 - Selenous acid, 97% - Selenious acid - 12574 - Alfa Aesar

12574 Selenous acid, 97%

CAS-Nummer
7783-00-8
Synonyme
Selenious acid

Größe Preis ($) Menge Verfügbarkeit
5g 22,05
50g 51,05
250g 186,88
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Selenous acid, 97%

MDL
MFCD00011331
EINECS
231-974-7

Chemische Eigenschaften

Formel
H2SeO3
Molmasse
128.97
Form
-4 Mesh
Schmelzpunkt
70° dec.
Sensitivität
Hygroscopic
Löslichkeit
Freely soluble in water, alcohol. Insoluble in ammoniaSoluble in water and ethanol.

Anwendungen

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.

Bemerkungen

3.004Hygroscopic. Incompatible with strong reducing agents, organic materials and powdered metals.

Literaturverweise

Kharkongor, I.; Myrboh, B. One-pot synthesis of α-ketoacetals from aryl methyl ketones in the presence of selenous acid catalyzed by boron triflouride etherate. Tetrahedron Lett. 2015, 56 (29), 4359-4362.

Pathe, G. K.; Ahmed, N. SeO2 in water: a mild and efficient promoter for deprotection of acetyl, methoxymethyl and tetrahydropyranyl ethers and sequel oxidation of methyl/methylene carbons of alpha carbonyl carbon. RSC Adv. 2015, 5 (73), 59114-59119.

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H301-H331-H373-H400-H410

Toxic if swallowed. Toxic if inhaled. May cause damage to organs through prolonged or repeated exposure. Very toxic to aquatic life. Very toxic to aquatic life with long lasting effects.

Sicherheitshinweise: P260-P261-P273-P301+P310-P304+P340-P311-P321-P405-P403+P233-P501a

Do not breathe dust/fume/gas/mist/vapours/spray. Avoid breathing dust/fume/gas/mist/vapours/spray. Avoid release to the environment. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Call a POISON CENTER or doctor/physician. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

Merck
14,8430
Gefahrenklasse
6.1
Verpackungsgruppe
II
Harmonized Tariff Code
2811.19
TSCA
Yes

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