质量指标

Quality Index

GB 25561-2010

FCC-1997

含量(干基计)≥%

Assay (dry)≥%

98.0

98.0

砷≤%

As ≤%

0.0003

0.0003

P2O5含量≥%

P2O5Assay≥%

39.94(Anhydrous)

39.94(Anhydrous)

30.52(Trihydrate)

30.52(Trihydrate)

K2O 含量≥%

K2O Assay≥%

52.94(Anhydrous)

52.94(Anhydrous)

40.4(Trihydrate)

40.4(Trihydrate)

氟化物(F)≤%

Fluoride(F)≤%

0.001

0.001

重金属(Pb)≤%

Heavy Metal(Pb)≤%

0.001

0.0015

水不溶物≤%

Water insoluble matter≤%

0.2

0.2

铅≤%

Pb≤%

0.0002

0.0002

干燥失重≤%

Loss on Dry≤%

2.0 (Anhydrous)

2.0 (Anhydrous)

20.0-30.0 (Trihydrate)

20.0-30.0 (Trihydrate)

pH值

pH value

9.0±0.4

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