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一、化学名：碳酸镁，碱式碳酸镁
二、分子式：xMgCO3·yMg(OH) 2·nH2O
三、分子量：----
四、CAS: 39409-82-0
五、性状：常温时为三水盐。轻质为白色易碎块状或松散的白色粉末。无臭。相对密度2.2。熔点350℃。在空气中稳定。加热至700℃发生二氧化碳，生成氧化镁。几乎不溶于水，但在水中引起轻微的碱性反应。不溶于乙醇，可被烯酸溶解并发泡。
六、用途：碱性剂；干燥剂；护色剂；抗结剂；载体；膨松剂；酸度调节剂。
七、包装：净重25kg，复合牛皮纸袋内衬聚氯乙烯袋；
八、储运与运输：应贮在阴凉、干燥、通风清洁的库房中，轻装轻放，防止受潮、受热，运输过程中防止雨淋受潮，应与有毒物品隔离堆放。
|
质量指标 |
Specification |
GB25587-2010 |
FCC,1996 |
|
含量(MgO) ,w/% |
Content (MgO) |
40.0-44.0 |
40.0-43.5 |
|
酸不容物,w/% ≤ |
Insolubles in Acid |
0.05 |
0.05 |
|
重金属（以Pb计）,w/% ≤ |
Heavy Metals（As Pb） |
0.001 |
0.002 |
|
氧化钙,w/% ≤ |
CaO |
0.6 |
0.6 |
|
可溶盐,w/% ≤ |
Soluble Salts |
1.0 |
1.0 |
|
铅(Pb),mg/kg ≤ |
Pb |
—— |
10 |
|
砷（As）,mg/kg ≤ |
Arsenic |
3 |
—— |
1、Chemical Name: MAGNESIUM CARBONATE
2、Molecular Formula: xMgCO3·yMg(OH) 2·nH2O
3、Molecular Weight: ---
4、CAS: 39409-82-0
5、Character: In normal temperature, it’s with three hydrates. Light one is white, easily fragile or loose white powder. Odorless. Relative density is 2.2. Melting point is 350℃. It’s stable in the air. When heated to 700℃, it will become magnesium oxide. It’s hardly soluble in water, but it’ll bring a slight alkaline reaction. It can not be soluble in ethanol but it could be soluble in olefine acid with sparkling.
6、Usage: It’s used as drier, color ficatives, anticaking agent, carrier, swelling agent, acidity regulator.
7、Packing: It is packed with polythene bag as the inner layer, and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg.
8、Storage and Transport: It should be stored in a dark, dry and ventilative warehouse, kept away from water and moisture; unloaded with care to avoid damage. Furthermore, it must be stored separately from poisonous substances.
