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Chrome (III) OHP-1 oxide

Chrome (III) OHP-1 oxide

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Ukraine, Dnipro
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  • Country of manufactureUkraine
Chrome (III) OHP-1 oxide

Represents finely dispersed powder of green color. Possesses high covering ability, sacred, thermo - weatherability and resistance to effect of aggressive gases. Chromium oxide is water-insoluble, difficult soluble in acids and alkalis, easily is oxidized the melted oxidizers (nitrates, perchlorates), air in the presence of alkalis, hot solutions of some oxidizers. Has the hardness of corundum, scratches quartz.

Temperature of melting is 2435 °C, boiling temperature apprx. 4000 °C, density is 5,21 g/cm ³.

Depending on range of application chromium oxide technical is issued the following brands and grades:
Pigmental - grades of OHP-1 and OHP-2;
Metallurgical - grades of OHM-0 and OHM-1;
Abrasive - grades of OHA-0, OHA-1 and OHA-2.

Chemical formula: Cr2O3

Ranges of application:
Pigmental - in the paint-and-varnish industry for production of primers, paints and enamels (including heat-resistant), and also for production of art and printing inks of different types, coloring of plastic, glass enamels etc. In production of construction materials as pigment;
Metallurgical - in metallurgical industry for production of metal chrome, abrasive materials and in production of ogneupor;
Abrasive - in hour, instrument-making, machine-building and other industries for polishing processes.

Physical and chemical indicators of chromium oxide of the technical pigmental brand of GOST 2912-79

Name of indicator Norm for grade
Appearance Powder of green color
Mass fraction of the general chrome in terms of Cr2O3, %, not less 99 99
Mass fraction of moisture, %, no more 0.15 0.15
Mass fraction of substances, water soluble, %, no more 0.1 0.2
rn aqueous solution 6-8 6-8
Relative staining power, %, not less 105 95
Covering ability, g/m ², no more 12 14
Sieve residue No. 0063K, %, no more 0.1 0.2
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