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七水硫酸鋅

一、化學名：硫酸鋅

二、分子式：ZnSO4·H2O, ZnSO4·7H2O

三、分子量：一水：179.44；七水：287.50

四、CAS：一水：7446-19-7；七水：7446-20-0

    五、性狀：無色透明棱柱體或小針狀體，或粒狀結(jié)晶性粉末，無臭，七水合物相對密度1.957，熔點100℃，易溶于水，水溶液對石蕊呈酸性。微溶于乙醇和甘油。一水合物于溫度超過238℃時失水。七水合物于室溫干燥空氣中逐漸風化。

    六、用途：營養(yǎng)增補劑（鋅強化劑）。加工助劑。可用于乳制品，嬰幼兒食品，飲液及乳飲料，谷類及其制品，食鹽，軟飲料，可可粉及其他口味營養(yǎng)型固體飲料，孕產(chǎn)婦配方奶粉。

七、包裝：內(nèi)襯聚乙烯塑料袋，外套復合塑料編織袋包裝，每袋凈重25kg。

八、貯存與運輸：本品應貯存在干燥通風清潔的庫房中，裝載運輸時要輕裝輕放，防止包裝破損，防止受潮、受熱，運輸過程中防止雨淋受潮，應與有毒物品隔離。

質(zhì)量指標SpecificationGB25579-2010FCC VII
含量 w/%ZnSO4·H2OContent w/%ZnSO4·H2O99.0-100.598.0-100.5
ZnSO4·7H2OZnSO4·7H2O99.0-108.799.0-108.7
砷（As），w/%            ≤As ,w/%                  ≤0.0003————
堿金屬和堿土金屬鹽，w/%    ≤Alkalis and Alkaline Earths,w% ≤0.500.5
酸度 Acidity,通過試驗Pass Test
硒（Se）， w/%                ≤Se, w/%                   ≤0.0030.003
汞（Hg）， w/%               ≤Hg, w/%                   ≤0.00010.0005
鉛（Pb），w/%                 ≤Pb, w/%                   ≤0.00040.0004
鎘（Cd），w/%                ≤Cd, w/%                   ≤0.00020.0002
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1、Chemical Name:  Zinc Sulfate

2、Molecular Formula : ZnSO4·H2O,  ZnSO4·7H2O

3、Molecular Weight: Monohydrate: 179.44; Heptahydrate: 287.50

4、CAS: Monohydrate:7446-19-7; Heptahydrate:7446-20-0

5、Character: It is colorless transparent prism or spicule or granular crystalline powder, odorless. Heptahydrate:The relative density is 1.957. Melting point is 100℃. It’s easily soluble in water and aqueous solution is acidic to litmus. It’s slightly soluble in ethanol and glycerin. The monohydrate will loses water at temperatures above 238℃; The Heptahydrate will be effloresced slowly in the dry air at room temperature.

   6、Usage: It is used as nutritional supplement(zinc fortifier) and processing aid. It’s used in milk product, infant food, liquid and milk drinks, grain and its’ products, table salt, soft drinks, maternal formula and coco powder and other flavor nutritional solid drinks.

   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.