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 is350℃.
It’s
stable in the air. When heated to700℃, 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 is25kg.
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.
