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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 21896-2019 |
2-Naphthylamine-1，5-disulfonic acid （sulphonic Tobias acid ） 2-萘胺-1，5-二磺酸（磺化吐氏酸） |
China National Standards disulfonic |
 English PDF |
| GB/T 1648-2013 |
H-acid monosodium salt（1-Naphthylamine-8-hydroxy-3,6-disulfonic acid monosodium salt) H-酸单钠盐（1-萘胺-8-羟基-3、6-二磺酸单钠盐） |
China National Standards disulfonic |
English PDF |
| GB/T 24415-2009 |
2-Naphthylamine-4，8-disulfonic acid （Amino C acid ） 2-萘胺-4，8-二磺酸（氨基C酸） |
China National Standards disulfonic |
English PDF |
| GB/T 21896-2008 |
2-Naphthylamine-1，5-disulfonic acid （Sulphonic Tobias acid ） 2-萘胺-1，5-二磺酸（磺化吐氏酸） |
China National Standards disulfonic |
English PDF |
| GB/T 13747.8-1992 |
Zirconium and zirconium alloys--Determination of cobalt content--1-Nitroso-2-hydroxy-3，6-naphthalene-disulfonic acid (sodium salt) spectrophotometric method 锆及锆合金化学分析方法 亚硝基R盐分光光度法测定钴量 |
China National Standards disulfonic |
English PDF |
| GB/T 7480-1987 |
Water quality--Determination of nitrate--Spectrophotometric method with phenol disulfonic acid 水质 硝酸盐氮的测定 酚二磺酸分光光度法 |
China National Standards disulfonic |
English PDF |
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