| 质量指标 | Specification | USP36 | EP8.0 |
| 含量（Mg），w/% | Content (Mg),w/% | 14.5-16.4 | 15.0-16.5 |
| 钙（Ca），w/% ≤ | Calcium (Ca),w/% ≤ | 1.0 | 0.2 |
| 铁（Fe），w/% ≤ | Iron (Fe),w/% ≤ | 0.02 | 0.01 |
| 砷（As），w/% ≤ | Arsenic (As),w/% ≤ | 0.0003 | ———— |
| 氯化物，w/% ≤ | Chloride,w/% ≤ | 0.05 | ———— |
| 重金属，w/% ≤ | Heavy metal,w/% ≤ | 0.005 | 0.001 |
| 硫酸盐，w/% ≤ | Sulphate,w/% ≤ | 0.2 | 0.2 |
| pH（5%水溶液） | pH (5% solution) | 5.0-9.0 | 6.0-8.5 |
| 干燥失重，w/% ≤ | Loss on drying,w/% ≤ | 29.0 | 24.0-28.0 |
| 氧化物，w/% ≤ | Oxide,w/% ≤ | ———— | 0.028 |
1、Chemical name: Magnesium Citrate
2、Molecular formula: Mg3(C6H5O7)2 ; Mg3(C6H5O7)2·9H2O
3、Molecular weight:Anhydrous: 451.13 ; Nanohydrate: 613.31
4、CAS: Anhydrous: 144-23-0 ; Nanohydrate:153531-96-5
5、Character: It is white or off-white powder. Non -toxic and non-corrosive, It is soluble in dilute acid,slightly soluble in water and ethanol. It is easily damp in air.
6、Usage:It is used as food additive, nutrient, saline laxative. It is widely used in pharmaceuticals. It plays an important role in regulating the heart’s neuromuscular activity and the conversion of sugar into energy. It is also essential to the metabolism of vitamin C.
7、Packing: It is packed with polyethylene bag as inner layer, and a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.
8、Storage & Transportation: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.
