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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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