Patent Blue V

Product Name Patent Blue V
Colour Shade
Synonyms Food Blue – 5
Chemical Name Sodium Salt of [4-a-[4-(Diethylamino)-5′-Hydroxy-2′,4′-Disulphonatobenzhydrylidene] Cyclohexa-2,5-Dien-1-Ylidene]Diethyl Ammonium Hydroxide Inner salt
C.I. No 42051
C.I. Name Acid Blue – 3
FDA Status
CAS No. 20262-76-4
EINECS No. 222-573-8
Test EEC (Limit)
Total colouring matters calculated as the sodium salt, percent by mass. Min. 85
Water insoluble matter, percent by mass. Max. 0.20
Combined ether extract, percent by mass. Max. 0.20
Unsulfonated Primary aromatic amines, percent by mass (calculated as aniline). Max. 0.01
Subsidiary dyes, percent by mass. Max. 2
Total organic compound other than colouring matters, percent by mass
(a) 3 Hydroxy benzaldyhyde
(b) 3 Hydroxy benzoic acid
(c) 3 Hydroxy 4 sulfonic acid,N,N-diethyle amino benzene sulfonic acid
(d) N,N-diethyle amino benzene sulfonic acid
Max. 0.50
Heavy metals as pb(mg/kg) Max. 40
Arsenic (mg/kg.) Max. 3
Lead (mg/kg.) Max. 2
Mercury (mg/kg.) Max. 1
Cadmium (mg/kg.) Max. 1