Inspection Item检验项目 Standard标准要求 Check Result检验结果 Conclusion是否合格 氧化锌（以干品）ZnO as dry% ≥ 99.5 99.7 Qualified 金属锌% (Zn)%                           ≤ 72 72.1 Qualified 盐酸不溶物% Insoluble matter for HOL ≤ 0.006 0.005 Qualified 灼烧减量 Lass quantity by burning% ≤ 0.20 0.10 Qualified 筛余物（45）% Remainder (45um)% ≤ 0.20 0.10 Qualified 水溶物%Solute in water% ≤ 0.10 0.062 Qualified 105 挥发物 Evaporate % ≤ 0.3 0.20 Qualified 铅（以 Pb 计）% Pb% ≤ 0.005 0.003 Qualified 铜（以 Cu 计）% Cu% ≤ 0.0002 0.0001 Qualified 锰（以 Mn 计）Mn% ≤ 0.0001 0.0001 Qualified 镉（以 Cd 计）% Cd% ≤ 0.0020 0.0010 Qualified 铁（以 Fe 计）% Fe% ≤ 0.0050 0.0030 Qualified 比表面积 Specific surface area(m2/g) 商定 Decide through consultation — 吸油量 oil sucking g/100g% 商定 Decide through consultation 颜色（与标准样比）color 商定 Decide through consultation 消色力（与标准色样比） 商定 Decide through consultation

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GRADE FIRST

GRADE UPTO GRADE RESULT CONCLUSION APPEARANCE WHITE POWDER WHITE

POWDER Qualified MAIN COMPONENT （Zn） ≥57.5 ≥57.0 ≥56.5 57.6 Qualified BURN LOSS 25.0-28.0 25.0-30.0 25.0-32.0 26.8 Qualified HEAVY METAL

(COUNT BY Pb) CONTENT ≤0.04 ≤0.05 ≤0.05 0.04 Qualified WATER CONTENT ≤2.5 ≤3.5 ≤5.0 2.4 Qualified SULFATE （COUNT BY SO4） ≤0.60 ≤0.80 —— 0.42 Qualified DGREE (BY 74um SLFT NET) ≥95.0 ≥94.0 ≥93.0 98.1 Qualified Cd CONTENT ≤0.10 —— —— 0.08 Qualified Hg CONTENT 0.0001 Qualified Sb CONTENT 0.000 Qualified As CONTENT 0.0001 Qualified Bi CONTENT 0.0001 Qualified

ITEM %	HIGH GRADE	RESULT	CONCLUSION
APPEARANCE	WHITE POWDER	WHITE POWDER	Qualified
MAIN COMPONENT （Zn）	≥28	28.9	Qualified
BURN LOSS	25.0-28.0	26.8	Qualified
HEAVY METAL (COUNT BY Pb) CONTENT	≤0.04	0.04	Qualified
WATER CONTENT	≤2.5	2.3	Qualified
SULFATE （COUNT BY SO4）	≤0.60	0.42	Qualified
PURITY AS ZINC CARBONATE	≥48	49	Qualified
Cd CONTENT	≤0.10	0.08	Qualified
Bulk density	4.3476 g/cm3	4.3476 g/cm3	Qualified
Hg CONTENT		0.0001	Qualified
Sb CONTENT		0.000	Qualified
As CONTENT		0.0001	Qualified
Bi CONTENT		0.0001	Qualified

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