欧美日韩国产另类A∨视频_亚洲欧美日韩一区高清中文字菲_在线无码视频二区_精品国产一级片在线观看_亚洲日韩另类制服无码AV_无翼乌工口全彩肉肉无遮挡18_欧美日韩一级黄色影院_亚洲阿v天堂一区二区三区_四虎4hu影库免费永久国产_精品国产三级a v在线

Physical and chemical properties: White crystalline powder, pink crystal with trace iron ion, decomposition at high temperature, soluble in water and ethanol, soluble in ether, melting point120°C
Product quality:

To use: This product is used as albumin reagent and iron colorimetric reagent, as a strong intermediate in dyes, surfactants, catalysts and medicine, and also as lubricant additive.