Chromium
Oxide Green pigment called chrome oxide green. there have
numerous preparation of chrome oxide process. but essentially has three kinds:
by chromium hydroxide preparation method of chrome oxide green, ammonium
sulfate sodium chromate salt decomposition method, Chromium Oxide Green
direct decomposition method.
The thermal decomposition of ammonium sulfate
sodium chromate salt, will be the United states, Britain, Germany and other
countries and the fundamental techniques of production of chrome oxide green,
has turn out to be the largest output in preparing chrome oxide green, best
quality, most varieties of production methods. its advantage is relatively
simple production procedure, price reduce than that of chromic acid
decomposition technique, wide adaptability, started within the rotating mass
production. the production procedure of basic does not create harmful gas.
chromic acid decomposition technique quick in current years . using the
consciousness of Chromium Oxide Green.
chromic anhydride in 1999 made chrome oxide production twice about chromium.
The physical properties of chrome oxide green.
chrome oxide green with metallic luster. color is light green to dark green.
magnetism,covering energy is strong, high temperature resistant, weather
resistant, insolube in water, within the atmosphere is steady. excellent
weatherability, meet thermal stability, melting point 2265 degrees celsius, the
boiling point of 3000 degrees celsius, is of top quality refractory materials.
chrome oxide green chemistry, insoluble in water, acid and organic solvents,
slightly soluble in concentrated sodium hydroxide solution, soluble in hot or
boiling sodium bromate answer of sulfur phosphorus mixed acid, good paint
quality and fastness.
Chromium
Oxide Green can be utilized for smelting metal chromium and
chromium for creating stainless steel, auto components , tools, tapes and
videos. chromium cross the rust on metal at the same time, strong and
beautiful. utilized for enamel, glass business,building materials. especially
for the production of ceramic pigment, vibrant color goods.
At home and abroad, as the international
financial recovery, developing materials, coating paint, plastic, ink as well
as other industries within the fast development, the demand of inorganic
pigment also increase rapidly. with the rapid improvement of coating industry,
as one of the main raw material for inorganic pigment obtained fast
improvement. improve the degree of environment safety of inorganic pigment,
utilizing has got extensively recognized industry enterprises, environmental
protection inorganic pigment improvement direction from the trend from the
times.
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