Speaking
from the preparation or source of Chrome oxide green, we can get chrome oxide
green by calcination of chromic acid, sodium bichromate (or potassium) or
sulphur. What’s much more, we can get chrome oxide green by thermal
decomposition of ammonium bichromate. There isn't any doubt that Chrome Oxide
Green Refractory can clarify every thing. That's for certain.
Now,
let us speak something about characteristics or features of Chromium Oxide Green. Generally
speaking, as some of us know, chrome oxide green is using the function of
higher temperature resistance, light resistance. What’s much more, it's with
resistance to numerous chemicals. What’s more, if we make use of pure chrome
oxide green, it is with the same infrared reflection as all-natural chlorophyll.
Speaking
of the molecular weight from the Chrome oxide green, its molecular weight can
be 151.99. what’s much more, it belongs to six square crystal system and it is
with the shape of green powder. Consequently, we can also contact it as Chrome
Oxide Green Refractory powder. By the way, the density of Chromium Oxide Green may be
5.21g/cm3, and its Mohs hardness can be eight.5~9, that is close towards the
alumina (Al2O3) and second only to diamond. But its Mohs hardness is greater
than silica and topaz al2 [SiO4] (F, oh) 2 and zircon (ZrSiO4).
As
for the refractive index of Chrome Oxide Green Pigment
, its refractive index can be 2.5 (coverage). And its specific heat (when the
temperature is twenty degree) can be 0.17J/ (G - K).
What’s
more, chrome oxide green is insoluble in water, acid and organic solvents.
However it is slightly soluble in concentrated sodium hydroxide solution. What’s
much more, it can be dissolved in hot sodium bromate solution and heat
concentrated perchloric acid solution or boiling parathion mixed acid.
On
the other hand, Chrome
Oxide Green Dye is extremely stable for light, air, and corrosive gases
(H2S, SO2). What’s much more, chrome oxide green is with excellent
weatherability. To be particular, when Green
Chrome Oxide meets heat, it has good stability. In addition, the melting
point of chrome oxide green may be 2265 DEG C and the boiling point can be 3000
DEG C. That is why we are able to say that chrome oxide green is a kind of
things which belongs to high-quality refractory supplies. Chromic oxide is
mainly used in metallurgy, paint, polishing, refractory supplies and new
improvement of molten coating(which can be known as Chrome oxide green coating)
and so on.
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