Manganese (II) nitrate

Structural formula
General
Surname	Manganese (II) nitrate
Molecular formula	Mn (NO 3 ) 2
Brief description	pale pink solid
External identifiers / databases
EC number	233-828-8
ECHA InfoCard	100.030.741
PubChem	61511
ChemSpider	55431
Wikidata	Q421490
properties
Molar mass	178.94 g mol −1
Physical state	firmly
density	2.13 g cm −3
Melting point	37 ° C ; 26 ° C (hexahydrate);
boiling point	129 ° C
solubility	very good in water (3800 g l −1 at 20 ° C)
safety instructions
H and P phrases	H: 272-302-314-373-412
	EUH: 071
	P: 210-220-260-280-305 + 351 + 338-370 + 378
MAK	0.5 mg m −3
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Manganese (II) nitrate is the nitrate salt of manganese with the empirical formula Mn (NO ₃ ) ₂ .

Extraction and presentation

Manganese (II) nitrate can be represented by dissolving manganese (II) carbonate in dilute nitric acid :

{\ displaystyle \ mathrm {MnCO_ {3} +2 \ HNO_ {3} \ longrightarrow Mn (NO_ {3}) _ {2} + H_ {2} O + CO_ {2} \ uparrow}}

Production by reacting manganese (IV) oxide with nitrogen dioxide is also possible .

properties

Manganese (II) nitrate is a pale pink, hygroscopic solid that is very soluble in water. It decomposes from a temperature of 140 ° C. Manganese is in the +2 oxidation state . The salt forms a monohydrate, a trihydrate or a hexahydrate depending on the production method and temperature. Like many other nitrates, it is an oxidizing agent and has a fire-promoting effect.

use

Manganese (II) nitrate is used to produce high-purity manganese oxides, spinels and porcelain paints. In addition, it is used in grain cultivation as a foliar fertilizer to promote root formation.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Entry on manganese (II) nitrate in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .
↑ H. Schmit, C. Rathgeber, P. Hennemann, S. Hiebler: Three-step method to determine the eutectic composition of binary and ternary mixtures - Tested on two novel eutectic phase change materials based on salt hydrates. In: J. Therm. Anal. Calorim. 117, 2014, pp. 595-602.
↑ data sheet Manganese (II) nitrate tetrahydrate, purum p. a., ≥ 97.0% (KT) from Sigma-Aldrich , accessed on October 21, 2016 ( PDF ).
↑ Arno H. Reidies: Manganese compounds. In: Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH, Weinheim 2002. doi : 10.1002 / 14356007.a16_123
^ ABC chemistry. Harri Deutsch publishing house, Frankfurt am Main / Zurich 1965.
^ Manganese in grain. ( Memento from February 6, 2006 in the Internet Archive ) on: agrarservice.de

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Entry on manganese (II) nitrate in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .

[Schmit-2] H. Schmit, C. Rathgeber, P. Hennemann, S. Hiebler: Three-step method to determine the eutectic composition of binary and ternary mixtures - Tested on two novel eutectic phase change materials based on salt hydrates. In: J. Therm. Anal. Calorim. 117, 2014, pp. 595-602.

[Sigma-3] ta sheet Manganese (II) nitrate tetrahydrate, purum p. a., ≥ 97.0% (KT) from Sigma-Aldrich , accessed on October 21, 2016 ( PDF ).

[Ullmann-4] Arno H. Reidies: Manganese compounds. In: Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH, Weinheim 2002. doi : 10.1002 / 14356007.a16_123

[5] ABC chemistry. Harri Deutsch publishing house, Frankfurt am Main / Zurich 1965.

[6] Manganese in grain. ( Memento from February 6, 2006 in the Internet Archive ) on: agrarservice.de