Manganese (II) acetate

Structural formula
${\displaystyle \mathrm {\ {\Biggl [}} }$ ${\displaystyle \mathrm {\ \!\ {\Biggr ]}_{2}} }$
General
Surname	Manganese (II) acetate
other names	Manganese diacetate
Molecular formula	C 4 H 6 MnO 4
Brief description	pale red solid
External identifiers / databases
CAS number 638-38-0 6156-78-1 (tetrahydrate) EC number 211-334-3 ECHA InfoCard 100.010.305 PubChem 25991548 ChemSpider 12008 Wikidata Q180713
properties
Molar mass	173.03 g mol −1 (anhydrate) 245.09 g mol −1 (tetrahydrate)
Physical state	firmly
density	1.6 g cm −3 1.59 g cm −3 (tetrahydrate)
Melting point	80 ° C
boiling point	> 300 ° C (decomposition)
solubility	soluble in water
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 315-319 P: 280-302 + 352-305 + 351 + 338-362
Toxicological data	2940 mg kg −1 ( LD 50 ,  rat ,  oral )
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Manganese (II) acetate is a chemical compound from the group of manganese compounds and acetates with the constitutional formula Mn (CH ₃ COO) ₂ .

Extraction and presentation

Manganese (II) acetate can be obtained by reacting acetic acid with manganese (II, III) oxide or manganese (II) carbonate .

${\displaystyle \mathrm {Mn_{3}O_{4}+2\ CH_{3}COOH\rightarrow Mn(CH_{3}COO)_{2}+Mn_{2}O_{3}+H_{2}O} }$

${\displaystyle \mathrm {MnCO_{3}+2\ CH_{3}COOH\rightarrow Mn(CH_{3}COO)_{2}+CO_{2}\uparrow +H_{2}O} }$

If manganese (II, III) oxide is used as the starting material, manganese (III) oxide is produced as a by-product. Manganese (II) acetate as produced by reduction of Manganese (III) acetate .

The anhydrous form can be obtained by reacting acetic anhydride and manganese (II) nitrate .

properties

Manganese (II) acetate is a pale pink solid that decomposes at temperatures above 300 ° C.

use

Manganese (II) acetate is used as a siccative , fertilizer , oxygen carrier, catalyst and as a tannery and textile aid .

Individual evidence

1. ↑ ^{a b c d e f g h i j} Entry on manganese (II) acetate in the GESTIS substance database of the IFA , accessed on February 1, 2016 (JavaScript required)
2. ^ ^{A b} Mary Eagleson: Concise Encyclopedia Chemistry. Walter de Gruyter, 1994, ISBN 978-3-110-11451-5 , p. 620 ( limited preview in the Google book search).
3. ↑ Pradyot Patnaik: Handbook of Inorganic Chemicals. McGraw-Hill, 2003, ISBN 978-0-070-49439-8 , p. 552 ( limited preview in Google book search).