指示名称

TEST ITME

FCC-V

E341(I)

含量(以钙计),%

Content(As Ca), %

15.9-17.7(Monohydrate)16.8-18.3(Anhydrous)

Assay(on the dried basis), ≥95%

P₂O₅含量, %

P2O5 Content(Anhydrous basis),%

55.5-61.1

外观

Description

--

Granular powder or white, deliquescent crystals or granules

鉴别试验

Identification

--

Positive tests for calcium and for phosphate

氧化钙含量,%

CaO content, %

--

19.0-24.8

砷, ≤mg/kg

As, ≤mg/kg

3

3

氟, ≤mg/kg

F, ≤mg/kg

50

30

重金属(以铅计), ≤%

Heavy metals(As Pb)≤%

--

--

铅, ≤mg/kg

Lead, ≤%mg/kg

2

4

镉, ≤mg/kg

Cadmium, ≤mg/kg

--

1

汞, ≤mg/kg

Mercury, ≤mg/kg

--

1

干燥失重,≤%

Loss on drying, ≤%

Monohydrate 1.0

--

干燥失重

Loss on drying

--

Monohydrate 60℃, 1hour then 105℃, 4hours, ≤17.5% Anhydrous: 105℃, 4hours, ≤14%

灼烧失重

Loss on ignition

Anhydrous 14.0-15.0

Monohydrate: 105℃, 1hour then ignite at 800℃±25℃ for 30minutes, ≤25.0% Anhydrous: ignite at 800℃±25℃ for 30minutes, ≤17.5%