LIANYUNGANG KEYUN IMPORT AND EXPORT CO., LTD.
SPECIFICATION OF MAGNESIUM CARBONATE
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.
9. Spec:
Specification | GB 25587-2010 |
Content (MgO) | 40.0~44.0 |
Insolubles in Acid | 0.05 |
Heavy Metals(As Pb) | 0.001 |
CaO | 0.6 |
Soluble Salts | 1.0 |
Arsenic | 0.0003 |
10. Shelf Life: 18months.
碳酸镁
化 学 名:
碳酸镁
英文名称:
Magnesium Carbonate
分 子 式:
xMgCO3·yMg(OH)2·nH2O
CAS NO:
39409-82-0
性 能:
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。
包 装:
净重25kg,复合牛皮纸袋内衬聚氯乙烯袋;
贮存与运输:
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。
用途:
碱性剂;干燥剂;护色剂;抗结剂;载体;膨松剂;酸度调节剂。
其他信息:
质量指标 GB25587-2010 FCC,1996
含量(MgO) ,w/% 40.0-44.0 40.0-43.5
酸不容物,w/% ≤ 0.05 0.05
重金属(以Pb计),w/% ≤ 0.001 0.002
氧化钙,w/% ≤ 0.6 0.6
可溶盐,w/% ≤ 1.0 1.0
铅(Pb),mg/kg ≤
- 10
砷(As),mg/kg ≤
3 -
**细碳酸镁规格-重质碳酸镁公司-药用级碳酸镁特殊指标-优质碳酸镁