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質量指標
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Specification
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GB25561-2010
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FCCVII
|
|
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含量(干基計),w% ≥
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Content（Dry Basis）≥
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98
|
98
|
|
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砷（As),mg/Kg ≤
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Arsenic≤
|
3
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3
|
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氟化物（以F計）,mg/Kg ≤
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Fluoride≤
|
10
|
10
|
|
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重金屬（以Pb計),mg/Kg ≤
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Heavy metals
|
10
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水不溶物, w% ≤
|
Water Insolubles≤
|
0.2
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0.2
|
|
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鉛（Pb）,mg/Kg ≤
|
Lead≤
|
2
|
2
|
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干燥失重,w%
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無水物 ≤
|
Loss on drying≤
|
2.0(Anhy)
|
2.0
|
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三水物
|
20.0-30.0
|
20.0-30.0
|
||
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pH值，（10g/L溶液）
|
pH Value
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9.0±0.4
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