1.Specifications: (Standard: GB/T15963-2008 )
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Item
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Index
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Appearance
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White or light yellow powder
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Active ingredient (%) Min
|
92
|
93
|
95
|
|
Petroleum ether soluble substances (%) Max
|
1.5
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1.5
|
1.2
|
|
Inorganic salts (NaCl+Na2SO4) (%) Max
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4.5
|
3.5
|
1.8
|
|
Water (%) Max
|
2.0
|
2.0
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2.0
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pH (1% aq. solution)
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7.5-9.5
|
7.5-9.5
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7.5-9.5
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|
Whiteness (W G ) Min
|
90
|
90
|
90
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