BACK TO FOOD COLORS

COMMON NAME                                                 :                    AMARANTH

SYNONYMS                                                          :                    (A)  FD & C RED

                                                                                                       (B)   C.I.FOOD RED 9

                                                                                                       (C)    FALSA RED 

C. I. NUMBER                                                       :                     16185

CHEMICAL NAME                                              :                     TRISODIUM SALT OF 1-(4-SULPHO-1

                                                                                                       NAPHTHYLAZO) - 2 HYDROXRNAPHTHALENE-3:6

                                                                                                       DISULPHONIC ACID

EMPIRICAL FORMULA                                   :                      C20 H11 N2 O10 S3 NA3

MOLECULAR WEIGHT                                    :                      604.5

SOLUBILITY  (WATER)                                   :                      132 GRAMS PER LITRE

FASTNESS PROPERTIES                   

LIGHT                                                                   :                     GOOD (WATER)

HEAT                                                                     :                     VERY GOOD (UP TO 105 0 C)

                                                                                                      FAIR  (UP TO 205 0 C)

FRUIT ACIDS                                                     :                     VERY GOOD

BENZOIC ACID                                                 :                     GOOD

SULPHUR DIOXIDE                                          :                     FAIR

ALKALIES                                                           :                     FAIR  (BECOMES BLUER)