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Sodium carbonate

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1、Chemical Name: Sodium Carbonate

2、Molecular Formula:CNa2O3

3、Molecular Weight: 105.99

4、CAS: 497-19-8

5、Character: Anhydrous is a white crystalline powder, relative density 2.53, melting point 851 ℃, heated to 400 ℃ decomposition. Insoluble in ethanol, soluble in water, dissolved when heat, solution is strongly alkaline. Easily deliquescence agglomeration in the air, absorb CO2 and produce sodium bicarbonate. Monohydrate as a fine white crystal or powder, the relative density of 1.55. Stable at room temperature and heated to lose crystal water becomes anhydrous at 100 ℃. Decahydrate colorless transparent crystallization temperature 34 ℃, relative density (20 ℃) 1.44, in the air easily weathered.

6、Usage: It is one of the important chemical raw materials used in making chemicals, cleaning agents, detergents, but also for photography and manufacturing pharmaceuticals products.

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. 

质量指标

Specification

GB 1886-92

总碱量(以Na2CO3计)≥       

Content (Na2CO3)

99.2%

氯化物(以NaCl计)≤

NaCl

0.7%

铁(以Fe2O3计) ≤

Fe

0.004%

水不溶物≤

Water insoluble matter

0.04%

灼烧失重≤

loss on ignition

0.8%

砷(以As计)≤

As

0.0002%

重金属(以Pb计)≤

Pb

0.001%


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