公开(公告)号：HU9601730D0

公开(公告)日：1996-08-28

申请号：HU9601730

申请日：1994-12-09

Applicant: BASF AG

Inventor： BECK KARIN HEIDRUN ,  KRAEH CLAUDIA ,  MAYER UDO ,  SCHOLZ GERHARD ,  ZEIDLER GEORG

IPC: G01N31/00 ,  C09B29/01 ,  C09B29/08 ,  C09B29/095 ,  C09B31/053 ,  C10L1/00 ,  C10L1/14 ,  C10L1/16 ,  C10L1/18 ,  C10L1/22 ,  C10L1/226 ,  C10M133/28 ,  C10M171/00 ,  G01N31/22 ,  G01N33/28

Abstract: PCT No. PCT/EP94/04091 Sec. 371 Date Jun. 6, 1996 Sec. 102(e) Date Jun. 6, 1996 PCT Filed Dec. 9, 1994 PCT Pub. No. WO95/17483 PCT Pub. Date Jun. 29, 1995Azo dyes of the formula where the ring A may be benzofused, n is 0 or 1, and R1-R8 are as defined, as pH-dependent markers for hydrocarbons, hydrocarbons containing the above-mentioned azo dyes, and a method for detecting these azo dyes in hydrocarbons.