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Barium manganate

Product Name:
Barium manganate
CAS No.
7787-35-1
Chemical Name:
Barium manganate
CBNumber:
CB3347908
Molecular Formula:
BaMnO4
Formula Weight:
256.26
MOL File:
7787-35-1.mol
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Barium manganate Property

Density 
4.85 g/mL at 25 °C(lit.)
form 
Fine Crystalline Powder
color 
Blue to dark blue-black
Specific Gravity
4.85
Water Solubility 
Slightly soluble in water
Sensitive 
Moisture Sensitive
Merck 
14,981
EPA Substance Registry System
Manganic acid (H2MnO4), barium salt (1:1) (7787-35-1)
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Safety

Hazard Codes 
Xn,O
Risk Statements 
20/22-8
Safety Statements 
28-28A
RIDADR 
UN 1479 5.1/PG 2
WGK Germany 
1
21
TSCA 
Yes
HazardClass 
5.1
PackingGroup 
III
HS Code 
28416900
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N-Bromosuccinimide Price More Price(7)

Sigma-Aldrich Gold
Product number:
210196
Product name :
Barium manganate
Purity:
technical grade, 90%
Packaging:
5g
Price:
$40.1
Updated:
2019/12/02
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Sigma-Aldrich Gold
Product number:
210196
Product name :
Barium manganate
Purity:
technical grade, 90%
Packaging:
25g
Price:
$110
Updated:
2019/12/02
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Alfa Aesar Gold
Product number:
L13172
Product name :
Barium manganate, tech. 90%
Packaging:
5g
Price:
$24.6
Updated:
2019/12/02
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Alfa Aesar Gold
Product number:
L13172
Product name :
Barium manganate, tech. 90%
Packaging:
25g
Price:
$74.4
Updated:
2019/12/02
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Strem Chemicals Gold
Product number:
56-7075
Product name :
Barium manganate, 90%
Packaging:
10g
Price:
$71
Updated:
2019/12/02
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Barium manganate Chemical Properties,Usage,Production

Description

Barium manganate (chemical formula BaMnO4) is a type of manganates in which the manganese is in a +6 oxidation state. It is obtained by heating manganese dioxide with barium carbonate or nitrate, or by precipitating potassium manganate with barium chloride.1 Barium manganate gives a green pigment, which was used to make manganese blue. Barium manganate can be used in the oxidation of a variety of functional groups efficiently and selectively: alcohols to carbonyls, alcohols to aldehydes, diols to lactones, thiols to disulfides, aromatic amines to azo-compounds, hydroquinone to p-benzoquinone, benzylamine to benzaldehyde, etc. 2,3

References

  1. N. Eastaugh, V. Walsh, T. Chaplin, R. Siddall, Pigment Compendium, 2008, ISBN: 978-0-7506-8980-9
  2. https://en.wikipedia.org/wiki/Barium_manganate
  3. http://reag.paperplane.io/00000118.htm

Chemical Properties

blue to dark blue-black fine crystalline powder

Uses

As pigment in fresco painting instead of Scheele's green because not so poisonous as latter. As mild oxidizing agent in organic synthesis.

Purification Methods

Wash the salt with conductivity H2O by decantation until the supernatant gives a faint test for Ba2+ . Remove excess H2O in a vacuum (IMPORTANT), then heat at 100o and the last traces of H2O are removed in a vacuum desiccator over P2O5. Store it over KOH. It disproportionates in hot H2O or dilute acid into Ba(MnO2)2 and MnO2, and is a mild oxidant. [Schlezinger & Siems J Am Chem Soc 46 1965 1924, Nyholm & Woolliams Inorg Synth XI 56 1968.]

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Global(38)Suppliers
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Description References