1, molecular formula: anhydrous Ca(H2PO4)2 monohydrate Ca(H2PO4)2.H2O
2, molecular weight: molecular weight: anhydrous 234.05; monohydrate 252.07
3, Specificity: Specific gravity: 2.220. It may lose crystal water when heated to 100℃. Soluble in hydrochloric acid and nitric acid, slightly soluble in water (1.8%). It commonly contains free phosphoric acid and hygroscopicity(30℃). Its water solution is acidic.
4, Usage: In food industry, it is used as leavening agent, dough regulator, buffer, modifier, solidification agent, nutritional supplement, chelate agent and so on. Fermentation agent, buffering agent and curing agent (gelation) for bread and biscuit, modifier for yeast food and meat. To improve saccharification and fermentation in brewing.
5, Packing: Packed with polyethylene plastic bag as liner, and woven bag as the outer layer. The net weight of each bag is 25kg.
| 指标名称 |
FCC-IV |
E 341(i) |
| 含量（以钙计）% |
15.9-17.7 (Monohydrate)
16.8-18.3 (Anhydrous) |
Assay (On the dried basis), ≥95% |
| P2O5含量(无水物) ,% |
-- |
55.5—61.1 |
| 外观 |
-- |
Granular powder or white,
deliquescent crystals or granules |
| 鉴别试验 |
-- |
Positive tests for calcium and for phosphate |
| 氧化钙含量 % |
-- |
19.0—24.8 |
| 砷 ≤mg/kg |
3 |
3 |
| 氟 ≤mg/kg |
50 |
30 |
| 铅 ≤mg/kg |
2 |
4 |
| 镉 ≤mg/kg |
-- |
1 |
| 汞 ≤mg/kg |
-- |
1 |
| 干燥失重 |
1(Monohydrate) |
Monohydrate:60℃,1hour then 105℃,4 hours,≤17.5%
Anhydrous:105℃,4hours,≤14% |
| 灼烧失重 |
14.0—15.5(Anhydrous) |
Monohydrate:105℃,1hour then ignite at 800℃±25℃ for 30minutes,≤25.0%
Anhydrous: ignite at 800℃±25℃ for 30minutes,≤17.5% |
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