Tetrasodium 3,6-bis[(E)-2-(5-chloro-2-hydroxy-3-sulfonatophenyl)diazen-1-yl]-4,5-dihydroxynaphthalene-2,7-disulfonate

3,6-bis[(5-chloro-2-hydroxy-3-sulfophenyl)azo]-4,5-dihydroxy-2,7-naphthalenedisulfonic acid sodium salt ; chlorosulfophenol s ; c-sulfonic acid chloride ; 2,7-bis(5-chloro-2-hydroxy-3-sulfophenylazo)chromotropic acid tetrasodium salt ; 2,7-bis(2-hydroxy-3-sulfo-5-chlorophenylazo)-1,8-di-hydroxynaphthalene-3,6-disulfonic acid ; sulfochlorophenolssodiumsaltcrystalline ; chlorosulfophenol s sodium salt ; sulfochlorophenol s ; sulfochlorophenol s mixed*sodium-calcium ; sulfochlorophenol s mixed sodium-calcium salt