食品级碳酸镁工厂直售

食品级碳酸镁  MAGNESIUM CARBONATE FOOD GRADE

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。

符合国家标准的食品级的碳酸镁的技术指标：

雷竞技百科 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	——

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.