methyl j acid-小9体育直播下载安装苹果

intermediate

methyl j acid

c.a.s. no.:22346-43-6

chemical formula: c11h11no4s

molecular weight: 253

chemical name:

2-methylamino-5-hydroxy-7-naphthalenesulfonic acid

4-hydroxy-7-(methylamino)-2-naphthalenesulfonic acid

7-methylamino-4-hydroxy-2-naphthalenesulfonic acid

22346-43-6
 

appearance

grey-white or light pink powder

coupling value

90% min.

insoluble matter

0.5% max.

free j acid

2.5% max.

bis j acid

0.4% max.

hplc purity

96% min.

packing

25 kg woven bag



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