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Molecular formula : MW : CAS :
nature : refractoriness above 1580 ° Cclay. The major components of silicate minerals. General gray to yellowish red, as contained impurities (such as iron oxide) and different. Usually soft and rigid two. And when a plastic water, drying and calcining, was massive compact objects. Mainly used in the manufacture of refractory materials such as refractory brick, refractory crucible melting glass jar.
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