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1333-82-0 - Chromium(VI) oxide, 99.9% (metals basis) - 10691 - Alfa Aesar

10691 Chromium(VI) oxide, 99.9% (metals basis)

CAS-Nummer
1333-82-0
Synonyme

Größe Preis ($) Menge Verfügbarkeit
25g 55,70
100g 122,00
500g 414,00
Zum Warenkorb hinzufügen Zur Angebotsanfrage hinzufügen Artikel anzeigen

Chromium(VI) oxide, 99.9% (metals basis)

MDL
MFCD00010952
EINECS
215-607-8

Chemische Eigenschaften

Formel
CrO3
Molmasse
99.99
Form
Crystalline
Schmelzpunkt
196°
Siedepunkt
250° dec.
Dichte
2.7
Sensitivität
Hygroscopic
Löslichkeit
Very soluble in water. Soluble in sulfuric, nitric acid, acetic acid, and acetone.

Anwendungen

Chromium(VI) oxide is widely used in chromium electroplating, and as protective coatings in corrosion/oxidation resistance of metals. It is also employed in CDs and DVDs. It is useful as an oxidant in Jones oxidation in acetic acid or acetone. It is used in the oxidation of primary alcohols into carboxylic acids, and secondary alcohols into ketones. With phosphoric acid, it is used as a stripping agent for anodic coatings of all types and in the production of syntheric rubies.

Bemerkungen

Decomposes on heating to Chromic Oxide and Oxygen which support combustion. Its crystals are deliquescent. Not combustible but enhances combustion of other substances. A strong oxidizing agent.

Literaturverweise

Calabrese, D. R.; Wenning, B.; Finlay, J. A.; Callow, M. E.; Callow, J. A.; Fischer, D.; Ober, K. C. Amphiphilic oligopeptides grafted to PDMS-based diblock copolymers for use in antifouling and fouling release coatings. Polym. Advan. Technol. 2015, 26 (7), 829-836.

Wang, C.; Hu, H.; Xu, J.; Kan, W. One-pot synthesis of indolizine via 1,3-dipolar cycloaddition using a sub-equivalent amount of K2Cr2O7 as an efficient oxidant under base free conditions. RSC Adv. 2015, 5, 41255-41258.

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H271-H301-H310-H330-H314-H318-H334-H317-H340-H350-H361-H372

May cause fire or explosion; strong oxidizer. Toxic if swallowed. Fatal in contact with skin. Fatal if inhaled. Causes severe skin burns and eye damage. Causes serious eye damage. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause an allergic skin reaction. May cause genetic defects. May cause cancer. Suspected of damaging fertility or the unborn child. Causes damage to organs through prolonged or repeated exposure.

Sicherheitshinweise: P221-P283-P301+P310a-P303+P361+P353-P304+P340-P305+P351+P338-P320-P405-P501a

Take any precaution to avoid mixing with combustibles. Wear fire/flame resistant/retardant clothing. IF SWALLOWED: Immediately call a POISON CENTER/doctor IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Specific treatment is urgent (see label). Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

Merck
14,2235
Gefahrenklasse
5.1
Verpackungsgruppe
II
Harmonized Tariff Code
2819.10
TSCA
Yes
RTECS
GB6650000

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