国产精品美女挤奶汁视频,亚洲色欲国产AV精品综合,午夜自产精品一区二区三区,波多野的免费AV片,久久精品国产99久久久,夜夜夜夜夜夜天干,777成年免费视频,男人猛躁进女人的毛片A片,国产人妻精品一区二区三区不卡,国产精品久久久久AV福利动漫,人妻无码久久久久久久久久久,成 人 h 高 潮在 线 观 看,AV天堂免费网,日本一区二区三区高清无卡,亚洲欧洲中文日韩乱码av,国产精品专区一区二区三区

Appearance: white or milky clear needle shape crystal;

Purity: ≥99.0%;

Standard: national standard;

Molecular weight: 142.1;

CAS: 501-30-4;

Melting point: 153-156`C;

Loss on drying: ≤ 0.5%;

Ignition residue: : ≤O.1%;

Heavy metal: ≤3ppm;

Packaging: 25KG/drum;

Uses: Applied in cosmetics industry; having effect of removing the freckle and skin whitening; as food additive to play function of retaining freshness and antioxy; for manufacturing of biological pesticide in agricultural industry; as analytical reagent of iron and spotting agent of film

【Back】