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1305-78-8 - Calcium oxide, Puratronic®, 99.998% (metals basis, excluding other alkaline earth and alkali metals 130ppm max) - 10684 - Alfa Aesar

10684 Calcium oxide, Puratronic®, 99.998% (metals basis, excluding other alkaline earth and alkali metals 130ppm max)

Numéro CAS
1305-78-8
Synonymes

Dimensions Prix ($) Quantité Disponibilité
2g 34,00
10g 116,00
50g 404,00
250g 1716,00
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Calcium oxide, Puratronic®, 99.998% (metals basis, excluding other alkaline earth and alkali metals 130ppm max)

MDL
MFCD00010911
EINECS
215-138-9

Propriétés chimiques

Formule
CaO
Poids formulaire
56.08
Forme
Powder
Point de fusion
2572°
Point d'ébullition
2850°
Densité
3.37
Indice de réfraction
1.8300
Sensibilité
Air & Moisture Sensitive
Solubilité
Slightly soluble in water. Insoluble in ethanol. Soluble in glycerol.

Applications

Calcium oxide has wide-ranging utility in industry. It is used in making porcelain, cements, mortars, and glass. It is also employed in flue-gas desulfurization in power plants, purifying sugar, drying the solvents/reagents, preparing bleaching powder, calcium carbide, and calcium cyanamide. It also finds use in water softeners, chemical recovery at Kraft pulp mills, biodiesel production, and in petroleum industry for the detection of traces of water. In agriculture it is used to restore the pH of acidic soils (liming). It is useful as a basic catalyst & acid scavenger in several organic transformations, for example, in Arndt-Eistert Synthesis of alpha-diazoketones, synthesis of heterocycles and oximes.

Notes

Reaction of calcium oxide with water is highly exothermic, & can ignite combustible materials. The aqueous solution of calcium oxide spontaneously reacts with carbon dioxide from air to form calcium carbonate.

Références bibliographiques

Ibrahim, H.; Ahmed, A. S.; Bugaje, I.; Mohammed-Dabo; Ugwumma, C. D. Synthesis of Bulk Calcium Oxide (Cao) Catalyst and its Efficacyfor Biodiesel Production. J. Energ. Tech. Pol. 2013, 3 (12), 14-16.

Pramanik, S.; Kamal K. K. Nanohydroxyapatite Synthesized from Calcium Oxide and its Characterization. Int. J. Adv. Manuf. Tech. 2013, 66 (5-8), 1181-1189.

Safaei-Ghomi, J.; Ghasemzadeh, M. A.; Mehrabi, M. Calcium oxide nanoparticles catalyzed one-step multicomponent synthesis of highly substituted pyridines in aqueous ethanol media. Scientia Iranica 2013, 20 (3), 549-554.

Pace, V.; Verniest, G.; Sinisterra, J.-V.; Alcántara, A. R.; De Kimpe, N. Improved Arndt-Eistert Synthesis of α-Diazoketones Requiring Minimal Diazomethane in the Presence of Calcium Oxide as Acid Scavenger. J. Org. Chem. 2010, 75, 5760-5763.

Mentions de danger et de prudence du SGH

Mentions de danger (UE): H318-H315-H335

Causes serious eye damage. Causes skin irritation. May cause respiratory irritation.

Mentions de prudence: P261-P280-P305+P351+P338-P304+P340-P310-P362-P312-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Immediately call a POISON CENTER or doctor/physician. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. 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.

Autres références

Merck
14,1686
Classe de danger
8
Groupe d'emballage
III
Code tarifaire harmonisé
2825.90
TSCA
Yes
RTECS
EW3100000

Recommandé

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    Aluminum oxide, Puratronic®, 99.995% (metals basis)
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  • 10688

    Chromium(III) oxide, Puratronic®, 99.97% (metals basis)
  • 10716

    Iron(III) oxide, Puratronic®, 99.998% (metals basis)
  • 10800

    Magnesium oxide, Puratronic®, 99.995% (metals basis)

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