Patent Blue V Food Color

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Patent Blue V Food Color

Patent Blue V Food Color is also known by the name of Sulphan Blue, Acid Blue 3, Food Blue 5, and comprises dark bluish synthetic dye that finds use as food coloring and food additive. With appearance of violet powder, it comes in varying colors depending on pH value of medium (deep blue in basic medium and yellowish-green in acidic medium).

Further, in medicine, patent blue V finds usage in lymphangiography as well as in sentinel node biopsy as dye to color lymph vessels so that these can further be injected with X-ray contrast medium.

Specification
PRODUCTS NAME PATENT BLUE V
Color SHADE
 
SYNONYMS Food Blue -5
CHEMICAL NAME Bis[hydrogen [4-[4-(diethylamino)-5'-hydroxy-2',4'-disulphonatobenzhydrylidene] cyclohexa- 2,5-dien-1-ylidene]diethyl ammonium
Color INDEX NO. 42051
C.I. NAME Acid Blue -3
FDA STATUS --
CAS NO. 3536-49-0
EINECS NO. 222-573-8
EEC NO. E-131
HUE NAME (FOOD) Blue -5
INDIAN STANDARD No. 131
CLASS Triaryl Methane
TOTAL DYE CONTENT % MIN. 85
LOSS ON DRYING AT 135 C & SODIUM
CHLORIDES & SULPHATES % MAX		 13
WATER INSOLUBLE MATTER % MAX.
 0.2
ETHER EXTRACTS % MAX.. 0.2
SUBSIDIARY DYE % MAX. 2
DYES INTERMEDIATES % MAX. 0.5
4% Leuco
UNSULFONATED PRIMARY AROMATIC AMINES % MAX. 0.01
LEAD (AS "Pb") PPM (MAX.) 10
ARSENIC (AS "As" PPM (MAX.) 3
MERCURY (AS "Hg") PPM (MAX) 1
CHROMIUM (AS "Cr") PPM (MAX) --
HEAVY METALS PPM (MAX) 40.00
Total organic compound other than Coloring 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
Max 00.50
WATER (gms/ltr.) 200.0
GLYCERINE (gms/ltr.) 190.00
PROPYLENE GLYCON (gms/ltr.) 200
ETHANOL (95%) (gms/ltr.) 15