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Specifications | ||||||||||||
Items | standard | |||||||||||
Appearance | white powder | white needle | ||||||||||
Active content(%) | ≥92 | ≥93 | ≥95 | ≥92 | ≥93 | ≥95 | ||||||
Petroleum ether soluble substance(%) | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | ||||||
Inorganic salt content(nacl+na2so4)(%) | ≤5.5 | ≤4.5 | ≤2.5 | ≤4.5 | ≤3.5 | ≤2.5 | ||||||
Water content(%) | ≤2.5 | ≤2.5 | ≤2.5 | ≤3.5 | ≤3.5 | ≤3.0 | ||||||
PH value(1% solution) | 7.5~9.5 | 7.5~9.5 | 7.5~9.5 | 7.5~9.5 | 7.5~9.5 | 7.5~9.5 | ||||||
Whiteness(wg) | ≥90 | ≥90 | ≥90 | ≥90 | ≥90 | ≥90 | ||||||






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