Aluminum chlorate

Structural formula
${\displaystyle \mathrm {\ {\Biggl [}} }$ ${\displaystyle \mathrm {\ \!\ {\Biggr ]}_{3}^{-}} }$
General
Surname	Aluminum chlorate
Molecular formula	Al (ClO 3 ) 3
External identifiers / databases
CAS number 15477-33-5 EC number 239-499-7 ECHA InfoCard 100,035,893 PubChem 161130 ChemSpider 141550 Wikidata Q447553
properties
Molar mass	277.33 g mol −1
Physical state	firmly
Melting point	decomposition
solubility	easily soluble in water and ethanol
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Aluminum chlorate is an aluminum salt of chloric acid with the empirical formula Al (ClO ₃ ) ₃ that was used as a medicinal substance.

Presentation and use

The aluminum chlorate is produced in an aqueous solution by reacting barium chlorate with aluminum sulfate , whereby the barium sulfate , which is difficult to dissolve, precipitates:

${\displaystyle \mathrm {3\ Ba(ClO_{3})_{2}+Al_{2}(SO_{4})_{3}\longrightarrow } }$ ${\displaystyle \mathrm {2\ Al(ClO_{3})_{3}+3\ BaSO_{4}\downarrow } }$

The substance was not isolated from it, but the solution was processed further. 25% aluminum chlorate solution was previously used medicinally as an astringent , antiseptic and antimicrobial liquid for mouth rinsing, hemostasis and the treatment of wounds and ulcers. Its use as an antiseptic is based on the mistaken idea that chlorates split off oxygen , which would then kill bacteria. The use of aluminum chlorate has since been abandoned because of the considerable toxicity of chlorates and their ineffectiveness as antiseptics. Today astringents used aluminum chloride or potassium aluminum sulfate in place of Alminiumchlorats.

properties

Aluminum chlorate forms colorless crystals that are readily soluble in water, which easily decompose to aluminum chloride and oxygen when heated and stored for longer periods above 35 ° C. The hexahydrate Al (ClO ₃ ) ₃  · 6 H ₂ O and the nonahydrate Al (ClO ₃ ) ₃  · 9 H ₂ O are known; the latter is formed by careful evaporation from aqueous solution. Like all chlorates , aluminum chlorate is a strong oxidizing agent that can react explosively with flammable substances.

Individual evidence

1. ↑ ^{a b c} Dale L. Perry, Sidney L. Phillips. Handbook of Inorganic Compounds , 1995, CRC Press, ISBN 0849386713 .
2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
3. ↑ leo-bw.de: Friedrich Mallebrein , accessed on January 4, 2015.
4. ↑ Franz von Bruchhausen: Hagers Handbook of Pharmaceutical Practice , p. 141, 1997, Springer Verlag, ISBN 3540526889 .
5. ^ Harry Auterhoff, Textbook of Pharmaceutical Chemistry, Wissenschaftliche Verlagsgesellschaft Stuttgart, 1968
6. ↑ Mallebrin® - oral health down to the throat ( Memento from February 2, 2019 in the Internet Archive )