TIANJIN JINHUITAIYA CHEMICAL REAGENTS CO.,LTD
天津金匯太亞化學(xué)試劑有限公司
Test Report of Product 檢驗報告
品 名: 硫酸鋅(ZnSO4·7H2O) 規(guī)格: 分析純
Product: Zinc sulfate heptahydrate Specification : AR
標準依據(jù): GB/T666—1993 批號: 20100615
Standard: GB/T666—1993 Batch No: 20100615
檢驗項目
T e s t I t e m
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檢驗標準
T e s t S t a n d a r d
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檢驗結(jié)果
T e s t r e s u l t
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性狀
(Characters)
|
白色結(jié)晶性粉末
(White crystalline powder)
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合格
(Conform)
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含量
(Assay)
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99.5%
|
99.6%
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PH
(Ph)
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4.4~6.0
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5.1
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澄清度實驗
(Appearance of solution)
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應(yīng)符合規(guī)定
(Comply with the standard)
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合格
(Conform)
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水不溶物
(Water-insoluble)
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0.01%
|
0.005%
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氯化物
(Chloride)
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0.0005%
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0.0005%
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總氮量
(Total nitrogen)
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0.001%
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0.001%
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砷
(Arsenic)
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0.00005%
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0.00005%
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錳
(Manganese)
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0.0003%
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0.0002%
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鐵
(Iron)
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0.0005%
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0.0004%
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銅
(Cuprum)
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0.001%
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0.001%
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鎘
(Cadmium)
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0.0005%
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0.00045%
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鉛
(Lead)
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0.001%
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0.001%
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硫化銨不沉淀物
(Hydrogen sulfide not precipitate)
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0.05%
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0.05%
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結(jié)論(Conclusion):符合分析純之規(guī)定(The above product complies with AR)
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