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          4,4'-dihydroxy-7

          4,4'-dihydroxy-7
          CAS NO  134-47-4
          Molecular formula C21H16N2O9S2
          Molecular weight 504.4897
          Structural formula
          Properties light yellow crystal; insoluble in organic solvent, lightly soluble in water
          To use as intermediate of azo dyes; for manufacturing of direct fast S, direct acid proof red 4BS
          Content ≥ 90.0%
          Purity (HPLC)  ≥ 98.0%
          Moisture ≤ 2.0%
          Packaging 25kgs/woven bag

          Add: Tianhu Town, Song County, Luoyang City, Henan Province
          Tel: +86-379-66578111 Fax: +86-379-66578287
          Sales Department: Manager Su 13721671000
          E-mail: luoyanghuasu1@163.com
          Copyright(C)2017 , Luoyang Huasu Dyestuff Co., Ltd All Rights Reserved.  Supported by  ChemNet  ChinaChemNet
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