1344-43-0

Basic information

• Product Name: MANGANESE (II) OXIDE
• Synonyms: c.i.77726;casselgreen;ci77726;manganesegreen;manganesemonooxide;manganeseoxide(mno);manganeseprotoxide;manganosite
• CAS NO: 1344-43-0
• Molecular Formula: MnO
• Molecular Weight: 70.94
• EINECS: 215-695-8
• Product Categories: Inorganics;metal oxide
• Mol File: 1344-43-0.mol

Chemical Properties

• Melting Point: 1650°C
• Appearance: Green/Powder/Chunks
• Density: 5.45 g/mL at 25 °C(lit.)
• Refractive Index: 2.16
• Water Solubility: Soluble in hydrochloric acid. Insoluble in water.
• CAS DataBase Reference: MANGANESE (II) OXIDE(CAS DataBase Reference)
• NIST Chemistry Reference: MANGANESE (II) OXIDE(1344-43-0)
• EPA Substance Registry System: MANGANESE (II) OXIDE(1344-43-0)

Safety Data

• Hazard Codes: Xn
• Statements: 21-36/37/38
• Safety Statements: 26-36
• WGK Germany: 3
• RTECS: OP0900000
• TSCA: Yes
• Hazardous Substances Data: 1344-43-0(Hazardous Substances Data)

Usage

Uses

1. Textile Printing Industry:
MANGANESE (II) OXIDE is used as a pigment for coloring fabrics in the textile printing industry.
2. Ceramics Industry:
MANGANESE (II) OXIDE is used as a colorant for creating green-colored ceramics.
3. Paints and Coatings Industry:
MANGANESE (II) OXIDE is used as a pigment in the production of green paints and coatings.
4. Glass Industry:
MANGANESE (II) OXIDE is used as a colorant for producing green-colored glass.
5. Bleaching Industry:
MANGANESE (II) OXIDE is used as a bleaching agent in the textile and paper industries.
6. Fertilizer Industry:
MANGANESE (II) OXIDE is used as a source of manganese in fertilizers, providing essential nutrients for plant growth.
7. Feedstuff Formulations:
MANGANESE (II) OXIDE is used as a dietary supplement in the animal feed industry, ensuring adequate manganese intake for livestock.
8. Analytical Chemistry:
MANGANESE (II) OXIDE is used as a reagent in various analytical chemistry applications.
9. Dry-Cell Batteries:
MANGANESE (II) OXIDE is used as a key component in dry-cell batteries, such as alkaline and zinc-carbon batteries.
10. Organic Synthesis:
MANGANESE (II) OXIDE is used as a reagent in organic synthesis, particularly for the oxidation of allylic alcohols and arylmethyl alcohols.
11. Industrial Applications:
MANGANESE (II) OXIDE is employed in various industrial purposes, including adhesives and sealant chemicals, lubricants and lubricant additives, oxidizing/reducing agents, plating agents, and surface treating agents.
12. Processing Aids:
MANGANESE (II) OXIDE is used as a processing aid in the manufacturing of various products.
13. Air Care Products:
MANGANESE (II) OXIDE is used in the production of air care products, such as air fresheners and deodorizers.

Production

Manganese(II) oxide is obtained commercially from manganese(IV) oxide (manganese dioxide) by the reduction with hydrogen, carbon monoxide or methane at elevated temperatures (>800°C): MnO2 + CO → MnO + CO2 MnO2 + H2 → MnO + H2O The oxide also can be made by thermal decomposition of manganese(II) carbonate or manganese(II) oxalate in the absence of air: MnCO3 → MnO + CO2 Also, careful dehydration of manganese(II) hydroxide, Mn(OH)2, under controlled conditions in the absence of air yields MnO.

Reactions

Manganese(II) oxide is the lowest oxide of manganese and it is purely a basic oxide. It reacts with acids to form their manganese(II) salts: MnO + H2SO4 → MnSO4 + H2O MnO + 2HCl → MnCl2 + H2O The compound also is oxidized by air or oxygen to higher oxides of manganese. When heated cautiously in air, the product is manganese sesquioxide or manganese(III) oxide: 4MnO + O2 → 2Mn2O3

Flammability and Explosibility

Notclassified

Safety Profile

Moderately toxic by intratracheal and subcutaneous routes. Violent reaction with hydrogen peroxide, Ca(OCl)2, F2, H202. See also MANGANESE COMPOUNDS.

InChI:InChI=1/Mn.O/q+2;-2

Synthetic route

manganese (7439-96-5) + oxygen (80937-33-3) → manganese monoxide (1344-43-0)

Conditions	Yield
In gaseous matrix dc sputtering of metal flakes in O2/He in cylindrical stainless steel hollow cathode;

manganese(IV) oxide (1313-13-9) + lanthanum(III) oxide + calcium oxide → lanthanum monoxide (12031-20-8) + LaO(1+) (60531-61-5) + manganese monoxide (1344-43-0) + LaOMn (220958-03-2) + LaOMn(1+)

Conditions	Yield
In neat (no solvent, solid phase) Irradiation (UV/VIS); laser ablation of La-Ca-Mn-O target (mixture of oxides, nominal composition La0.67Ca0.33MnO3, calcination at 800°C for 5 h); laser beam 532nm (Nd:YAG laser); quadrupole and TOF mass spectrometry;

Upstream product

• 7439-96-5 manganese 
• 80937-33-3 oxygen 
• 1313-13-9 manganese(IV) oxide 

Relevant articles and documents

Microwave spectrum of the MnO radical in the X 6Σ+ state

The microwave spectrum of MnO in the 6Σ+ ground electronic state was detected using a source-modulated submillimeter-wave spectrometer. The MnO radical was efficiently generated by dc sputtering of manganese flakes placed inside a hollow cathode in the presence of an oxygen and helium mixture. In total, 283 spectral lines were measured in the frequency region of 210-450 GHz for nine rotational transitions, each of which showed six fine structure line groups consisting of several hyperfine structure components due to the 55Mn nucleus (I=5/2). A least-squares analysis of the measured line frequencies resulted in the determination of rotational, fine, and hyperfine coupling constants including higher-order spin-orbit distortion terms for the spin-spin, spin-rotation interactions and the Fermi contact interaction of the Mn nucleus. The hyperfine coupling constants were used to assess plausible molecular orbital bonding models.

A new hypermetallic molecule LaOMn generated by laser ablation

A new hypermetallic oxide LaOMn and its positive ion involving two heterometal atoms were observed and identified in the 532 nm laser ablation of a La0.67Ca0.33MnO3 target using both time-resolved quadrupole mass spectrometric and time-of-flight mass spectrometric techniques. The dependence of LaOMn+ yield on the laser fluence also confirmed the formation of the ionic hypermetallic species. Theoretical calculations were carried out to predict the stability and the geometric structures of these new molecules. The calculations suggest that the LaOMn and LaOMn+ molecules might be formed via secondary reactions of the neutral and ionic MnO with La or La+ in the laser ablated plasma.