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

12574 Selenous acid, 97%

Codice CAS
7783-00-8
Sinonimi
Selenious acid

Dimensioni Prezzo ($) Quantità Disponibilità
5g 11,00
50g 50,10
250g 199,00
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Selenous acid, 97%

MDL
MFCD00011331
EINECS
231-974-7

Proprietà chimiche

Formula
H2SeO3
Peso formula
128.97
Modulo
-4 Mesh
Punto di fusione
70° dec.
Sensibilità
Hygroscopic
Solubilità
Freely soluble in water, alcohol. Insoluble in ammoniaSoluble in water and ethanol.

Applicazioni

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.

Note

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

Letteratura

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.

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): 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.

Dichiarazioni precauzionali: 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.

Altri riferimenti

Merck
14,8430
Classe di rischio
6.1
Gruppo di imballaggio
II
Codice tariffe armonizzato
2811.19
TSCA
Yes

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