中国熟妇乱子hdsex粗,国产女人天天春夜夜春,男人边吃奶边添下面好爽视频,欧美videos另类色hd老妇人,亚洲chinese猛男自慰,羞羞影院午夜男女爽爽免费,射精情感曰妓女色视频,18禁止看的无遮挡吃奶头,久久刺激cijilu福利一区,在线а天堂

01
DNSD Acid (128-42-7)

DNSD Acid (128-42-7)

Chemical name: 4,4-Dinitrostilbene-2,2-disulfonic acid
Structural formula:
               
Chemical formula: C14H10N2O10S2
Molecular weight: 430
CAS NO.:128-42-7
Quality index:

Item

Index

(1)Appearance

orange powder

(2)Binitro acid content(gross dry product)%　　

≥ 66.0

(3)binitrobenzyl compound
(gross dry product )%　　　　

≤ 0.5

(4)Other organic impurities(gross dry product )%　　

≤2.0

(5)Inorganic salt(gross dry product )%　　　　　　　

≤ 2.0

(6)Water insolubles(gross dry product)%　　　　　　

≤1.0


Main use: it is an intermediate of dyes.
Packing: 25kg plastic woven bag.





?