丰满又黄又爽少妇毛片,内射老阿姨1区2区3区4区,亚洲自拍高清中文

国产片一级特黄aa的大片,欧美日韩亚洲一区,美女极品粉嫩美鮑20p图,无码国产玉足脚交久久麻豆,无码高清影视中文,免费久久香蕉网站,亚洲AV无码秘蜜桃酒光希,欧美无砖专区一区二区三区,亚洲高潮喷水无码AV电影,精品久久高清无码

Sodium bisulfite

【Molecular weight 】: 104.06
【Molecular formula 】: NaHSO₃

【Physical and chemical properties 】:
white crysatl or powder; relative density: 1.48; easily soluble in water; lightly soluble in ethyl alcohol

【Quality standard 】HG3—1291—80

item	analytical purity	chemical purity
clarity test water insolubles chloride(Cl) ferrum(Fe) aresenic(As) heavy metal(in Pb)	qualified 0.005 ≤0.01 ≤0.001 ≤0.0001 ≤0.001	qualified 0.01 0.02 0.002 0.0002 0.002

【Uses】:
For bleaching of cotton textiles; as reducing agent in paper-making, dyeing, leather, and chemical synthesis industry

【Packaging and storage】:
Should not be mixed with gasoline oil and oxidizing agent;
Packed with woven bag lined with polyethylene plastic bag;
Net weight: 50kg or 25kg