A 2:1 mixture of: 4-(7-hydroxy-2,4,4-trimethyl-2-chromanyl)resorcinol-4-yl-tris(6-diazo-5,6-dihydro-5-oxonaphthalen-1-sulfonate) and 4-(7-hydroxy-2,4,4-trimethyl-2-chromanyl)resorcinolbis(6-diazo-5,6-dihydro-5-oxonaphthalen-1-sulfonate)
Mélange dans un rapport 2:1 de: 4-(7-hydroxy-2,4,4-triméthyle-2-chromanyle)résorcinol-4-yl-tris(6-diazo-5,6-dihydro-5-oxonaphthalène-1-sulfonate) et 4-(7-hydroxy-2,4,4-triméthyle-2-chromanyle)résorcinolbis(6-diazo-5,6-dihydro-5-oxonaphthalène-1-sulfonate)