ammonium paratungstate CAS NO.11120-25-5

Mainly used to manufacture tungsten trioxide or blue tungsten oxide metal powder SPECIFICATIONS: Impurity Content Grade APT-0 WO3 Min (%) 88.5 Chemical Composition impurity Content Max (%) AI 0.0005 As 0.001 Bi 0.0001 Ca 0.001 Co 0.001 Cr 0.001 Cu 0.0003 Fe 0.001 K 0.001 Mn 0.001…

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