Zinc oxide

MDL：
--MFCD00011300

Molecular Formula：
ZnO

Molecular Weight：
81.38

Alias：
锌氧粉,锌华,白铅粉,锌白 Flowers of zinc Zinc white

Product order：

Name	Specifications	Packing	Price	Delivery
Zinc oxide	医药级，USP	500g	RMB 74.8	现货
Zinc oxide	分析标准品，络合量：12.280mmol/g	50g	RMB 1045	现货
Zinc oxide	99.99%	50g	RMB 217.8	现货
Zinc oxide	SP	10g	RMB 96.8	现货
Zinc oxide	PT	50g	RMB 74.8	现货
Zinc oxide	电子级	500g	RMB 52.8	现货
Zinc oxide	CP	500g	RMB 30.8	现货
Zinc oxide	AR	500g	RMB 38.5	Consulting service

Character：
白色无定形粉末或淡黄色结晶粉末。白色无定形粉末或淡黄色结晶粉末。加热变黄 ，在高温时可被炭还原成金属锌，在水中的溶解度很小，它是两性氧化物，既可溶于酸 ，又可溶于氨水及碱金属氢氧化物中，在空气中吸收碳酸气及水蒸气。
熔点：1975℃
密度：5.606

Quality Standard：
   
   HG/T 2890-1997
项目Item                                                 分析纯   化学纯
                                                          (AR)     (CP)
含量(ZnO)Assay,%                                         ≥99.0    99.0
澄清度试验Clarity                                         合格     合格
稀硫酸不溶物Insolution matter in diluted sulfuric acid,% ≤0.01    0.02
游离碱Free alkalies,%                                      合格    合格
氯化物(Cl)Chloride,%                                     ≤0.001   0.005
硫化合物(以SO4计)Sulfur compounds                        ≤ 0.01    0.02
硝酸盐(NO3)Nitrate,%                                     ≤0.003   0.005
锰(Mn)Manganese,%                                        ≤0.0005  0.001
铁(Fe)Iron,%                                             ≤0.0005  0.0025
砷(As)Arsenic,%                                          ≤0.00005 0.0002
铅(Pb)Lead,%                                             ≤0.005   0.05
还原高锰酸钾物质Potassium permanganate-reducing substances 合格    合格
硫化铵不沉淀物(以SO4计)Substances not
precipitated by ammonium sulfide,%                       ≤0.01    0.25

项目                                                     电子级
氧化锌(以干品计) (ZnO)　%                                ≥ 99.8  
金属物(以Zn计) %                                         无  
氧化铅(以Pb计) %                                         ≤ 0.001
氧化铜(以Cu计)　 %                                       ≤ 0.0001
锰的氧化物(以Mn计) %                                     ≤ 0.0001  
铁的氧化物(以Fe计) %                                     ≤ 0.0002
镉的氧化物（以Cd计） %                                   ≤ 0.0005
盐酸不溶物 %                                             ≤ 0.002  
灼烧减量 %                                               ≤ 0.05
筛余物（45um） %                                         ≤ 0.02
水溶物　 　 %                                            ≤ 0.05  
105℃挥发物　 %                                          ≤ 0.2  
粒径um                                                   20－40（nm）  

项目                                                     医药级
氧化锌(以干品计) (ZnO)　%                                ≥ 99.9
金属物(以Zn计) %                                         无
氧化铅(以Pb计)%                                          ≤0.001  
镉 %                                                     ≤0.0005  
砷 %                                                     ≤0.0005  
盐酸不溶物 %                                             ≤0.002
105℃挥发物　%                                           ≤ 0.03

99.99%：

外观Appearance                          白色至黄色粉末
X-射线衍射分析X-Ray Diffraction         Conforms to standard
锌Zn                                    79.8 - 80.8 %  (Complexiometric EDTA)
纯度Purity                              ≥99.99% Based On Trace Metals Analysis
ICP Assay                               Confirms Zinc component
总金属杂质Total metallic impurities     200ppm by ICP Atomic emission
(Al、Ca、Fe、Mg、Mn、Na、Pb、Sb)  

Storage：
密封保存
用途  在锰的氧化还原容量法测定中用以沉淀盐类易消解的元素。如铁、铬、钒、钛和锆，用作硫化氢吸收剂。标定乙二胺四乙酸二钠的基准剂