中文名称：直接红31
  • C.I.直接红31; 直接桃红 12B; 直接桃红5B; 直接桃红12B; 直接桃红
  • Direct Red 31
  • C.I.Direct Red 31; Disodium 7,7'-iminobis(4-hydroxy-3-(phenylazo)naphthalene-2-sulphonate); Direct Pink 5B; 2-Naphthalenesulfonic acid, 7,7'-iminobis(4-hydroxy-3-(2-phenyldiazenyl)-, sodium salt (1:2); 2-Naphthalenesulfonic acid, 7,7'-iminobis(4-hydroxy-3-(2-; EINECS 225-669-8; 2-Naphthalenesulfonic acid, 7,7'-iminobis(4-hydroxy-3-(phenylazo)-, disodium salt; disodium (3E,3'E)-7,7'-iminobis[4-oxo-3-(2-phenylhydrazinylidene)-3,4-dihydronaphthalene-2-sulfonate]
  • 5001-72-9
  • 225-669-8
  • C32H21N5Na2O8S2
  • 713.6474
  • InChI=1/C32H23N5O8S2.2Na/c38-31-25-13-11-23(15-19(25)17-27(46(40,41)42)29(31)36-34-21-7-3-1-4-8-21)33-24-12-14-26-20(16-24)18-28(47(43,44)45)30(32(26)39)37-35-22-9-5-2-6-10-22;;/h1-18,33-35H,(H,40,41,42)(H,43,44,45);;/q;2*+1/p-2/b36-29-,37-30-;;
  • 直接红31 5001-72-9
  • 主要用于各种棉、麻、丝纺织品的染色
  • 苯胺、双J酸、亚硝酸钠、盐酸
  • 苯胺、双J酸、亚硝酸钠、盐酸