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TR135-53-5 sodium 6,7-dihydroxynaphthalene-2-sulphonate
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Hangzhou Colorific Chemicals Co., Ltd.
[ Gold Suppliers ]
| Contact | Mr.Zhu |
| Telephone | 86-571-89712977 89712978 89712979 |
| zhu_xuguang@colorific-chem.com | |
| Address | 9F, BLDG 3D/E, (Westport/ New Territories)206 Zhen Hua Road, San Dun, Hangzhou, China. |
Shanghai Haihui Chemical Co.,Ltd
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| Contact | Mr.Xu |
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| 761035367@qq.com | |
| Address | Room 2804, No.2, Lane 181, Tianbao Road, Hongkou District, Shanghai, China |
Tianjin Yuansu Chemical Reagent Co., LTD
[ Gold Suppliers ]
| Specifications | 99% min |
| Packing | 25kg 50kg drum or bag |
| Description | What is the chemical of 2,3-Dihydroxynaphthalene-6-Sulfonate-sodium salt ? Appearance: white to light brown crystal powder ; Assay: 99% min by HPLC ; IR Identity: conform to standard ; HNMR?? conform to standard ; carbon spectrum: conform to standard ; Water by K. F.:0.5% max or as per the customer??s request ; Loss on drying:0.5% max. or as per the customer??s request ; =============================================================================== Production method: Obtained by alkali melting and acidification of 2-naphthol-3,6-disulfonic acid sodium salt (R salt). |
| Contact | Mr. Alexander Wang |
| Telephone | +86-22-83739603 |
| sales@yuansu-reagent.com | |
| Address | No. 268, Yuliang Street, Dagang Street, Binhai New Area, Tianjin, China |
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