七水硫酸亚铁

42 硫酸亚铁   FERROUS SULFATE

一、化学名：硫酸亚铁

二、分子式：七水合物：FeSO₄·7H₂O；干燥品：FeSO₄·nH₂O  

三、分子量：七水合物：278.01；

四、CAS：七水合物：7782-63-0；干燥品：7720-78-7

五、性状：七水合物：蓝绿色结晶或颗粒。无臭，略带咸味，有收敛性。在干燥空气中会风化，在潮湿空气中易氧化成棕黄色碱式硫酸铁。易溶于水，不溶于乙醇。

干燥品：灰白色至米色粉末。有涩味。主要由FeSO₄·H₂O组成，并含少量的FeSO₄·4H₂O。缓慢溶于冷水（26.6g/100mL, 20℃），加热则迅速溶解。不溶于乙醇。几乎不溶于50%硫酸。

六、用途：营养增补剂（铁质强化剂）、果蔬发色剂。

七、包装：内衬聚乙烯塑料袋，外套复合塑料编织袋包装，每袋净重25kg。

八、贮存与运输：本品应贮存在干燥通风清洁的库房中，装载运输时要轻装轻放，防止包装破损，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。

1、Chemical Name: Ferrous Sulfate

2、Molecular Formula : FeSO4·7H2O, FeSO4·nH2O

3、Molecular Weight: Heptahydrate :278.01

4、CAS: Heptahydrate: 7782-63-0; Dried: 7720-78-7

5、Character: Heptahydrate: It’s blue-green crystals or granules, odorless with astringency. In dry air, it’s efflorescent. In moist air, it oxidizes readily to form a brown-yellow, basic ferric sulfate. It’s soluble in water, insoluble in ethanol.

   Dried: It’s gray-white to beige powder.with astringency.It is mainly composed of FeSO4·H2O and contains a few of FeSO4·4H2O.It’s slowly soluble in cold water (26.6 g / 100 ml, 20 ℃), It will be dissolved quickly when heating.It's insoluble in ethanol.Almost insoluble in 50% sulfuric acid.

6、Usage: It is used as nutritional supplement(iron fortifier) and fruit and vegetable colorant.

7、Packing: It is packed with polyethylene bag as inner layer, and a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.

8、Storage and Transport: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.