硬脂酸,Stearic acid;reagent grade, 95%
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甲基橙,Methyl orange (C.I. 13025);indicator ACS,Reag. Ph Eur
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柠檬酸铁铵,Ammonium iron(III) citrate;reagent grade, powder
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铬黑T,Eriochrome® Black T;ACS reagent (indicator grade)
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锡,Tin;powder, <150 μm, 99.5% trace metals basis
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铜,Copper;powder, <425 μm, 99.5% trace metals basis
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乙烯利,Ethephon [ETH, ethrel];PESTANAL®, analytical standard, 98.0-102.0%