Molecular formula : ZnSO4 7H2O nature : Opteron also known as alum. Orthogonal colorless crystal. The relative density of 1.957 (25 ° C). In dry air gradually weathered. 100 ° C melting point. Heat to…
, Zinc oxide for the dry powder of zinc source: good stability in the feed, without water, not caking, invariance, for animal feed and long-term storage, the impact on the vitamin in the diet.
The acid anhydride of chromic acid is chromium trioxide or chromium(VI) oxide; industrially, this compound is sometimes sold as "chromic acid".[1] This compound is an intensely-colored dark …
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insulating material.we supply many size absorb sound ,keep warm or cold for buildings .low price convenient tansportation.MSN:yolanda.yanying@hotmail.com contact me for further talking .
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