When water soluble dyes are precipitated on a substrate of aluminum hydrate they form insoluble products with pigmentary properties, coloring by "contact" and dispersing in the medium of application. Compared to water-soluble dyes from which they originate, lakes have a better resistance to light. Their scope is only in products with a pH between 4 and 7. While in dyes the color strength is related to the amount of product in the Lakes depends on fineness degree of particles: the higher is the grinding degree higher will be the color strength and lower the amount of product to use.

 

  NAME N° CEE PIGMENT N° CLASSE CI COLOUR
INDEX N°
INCI FD&C N°
giallo TARTRAZIN
CHINOLIN
E102
E104
yellow 100
yellow 115
Acid yellow 23 lake
Acid yellow 3 lake
19140:1
47005:1
v
v
Yellow 5
-
giallo2 SUNSET YELLOW E110 yellow 104 Food yellow 3 lake 15985:1 v Yellow 6
rosso PONCEAU 4R
ALLURA RED
E124
E129
-
-
Food red 17
Food red 17:1
16255:1 v -
Red 40
viola AMARANTH E123 Red 193 Food red 9:1 16185:1   -
viola2 ERYTHROSINE E127 Red 172 - 45430:1   -
viola3 CARMOISINE E122 - Food red 3 14720:1   -
blu PATENT BLUE
INDIGOTINE
BRILLANTI BLUE
E131
E132
E133
Blue 78
Blue 63
-

Food Blue 2:1
Food Blue 1:1
42051:1
73015(PD)
42090:2
v
v

Blue 2
Blue 1
nero BRILLANT BLACK E151 - Food black 1 28440 v