硫酸鋅、性能：無色晶體,小針狀或粒狀晶形粉末,無臭,在空氣中會風(fēng)化。溶液對石蕊呈酸性比重1.957(25/4℃),熔點(diǎn)100℃在280℃失去7H2O,溶于水及甘油,不溶于酒精,毒性底。 蘋果公司今天在紐約股市收盤后發(fā)布了2016財年第三財季的財報，營收和利潤不出意外的下滑，不過因?yàn)榭偁I收和每股收益超過了市場預(yù)期，蘋果股票在目前的盤后交易中上漲了7.21%，重回100美元以上。 質(zhì)量指標(biāo)SpecificationGB25579-2010FCC,1996含量w/% ZnSO4.H2OContentZnSO4.H2O99.0-100.598.0-100.5ZnSO4.7H2OZnSO4.7H2O99.0-108.799.0-108.7砷(As),mg/kg ≤As0.0003——堿金屬和堿土金屬鹽w/%≤Alkali metal0.500.5酸度PH通過試驗(yàn)正常硒(Se),mg/kg ≤Se0.0030.003汞(Hg),mg/kg ≤Hg0.00010.0005鉛(Pb),mg/kg ≤Pb0.00040.001鎘(Cd),mg/kg ≤Cd0.00020.0005 1、ChemicalName: Zinc sulfate 2、Molecular Formula :ZnSO4.H2O, ZnSO4.7H2O 3、MolecularWeight:179.48(Monohydrate), 287.54(Heptahydrate) 4、CAS:7446-19-7（H2O）；7446-20-0 (7H2O) 5、Character:It iscolorless or white crystalline powder,odorlessness. Efflorescence in air. Acid hydrometer is 1.957(25/4℃) to litmus.Melting point is 100℃. It’s soluble in water and glycerol, insoluble in ethanol and light toxicity, lose crystal water in 280℃. 6、Usage:It is used as food additives, animal feed, printing and dyeing, timber preservative.Used as analytical reagent. 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 dry and ventilative warehouse; kept away form water and moisture during transport; unloaded with care, so as to avoid damage to bags. Furthermore, it should be stored separately from poisonous substances. 鋅是許多酶系統(tǒng) ( 如碳酸酐酶、乙醇脫氫酶和堿性磷酸酶等 ) 的組成部分，鋅 缺乏可導(dǎo)致酶功能異常。 口服硫酸鋅可糾正鋅缺乏， 恢復(fù)酶系統(tǒng)的功能。 鋅離子 能沉淀蛋白質(zhì)，外用有收斂防腐作用，且能幫助肉芽組織形成。 無色或白色結(jié)晶、顆粒或粉末，別名皓礬。無氣味。味澀。在干燥空氣中風(fēng)化，280℃失去全部結(jié)晶水，500℃以上分解。1g溶于0.6ml水、2.5ml甘油，不溶于乙醇。水溶液對石蕊呈酸性，pH約4.5。含1分子結(jié)晶水的較不易結(jié)塊。相對密度1.97。熔點(diǎn)100℃。小致死量（大鼠，經(jīng)口）2200mg/kg。有刺激性。用于制造立德粉，并用作媒染劑、收斂劑、木材防腐劑等。

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