Brilliant Blue CI.42090 - 133 - Food Blue 2

Description

Reddish Blue slightly granulated powder

Colour Index Number

Colour Index reference

Associated FD & C

Approved Additive Code

C.I.42090

FOOD Blue 2

FD & C Blue No.1

E133

Class

Light Stability

Heat Stability 100^oc

Heat Stability 200^oc

Triarylmethane

5

5

5

Solubility in water 20oc g/l

Pure Dye Content – Av.

Pantone Reference

Suitability for blending

150 grams

85%

299

yes

Solubility in Glycerine g/l

at 20^oc

Solubility in

50% Isopropyl Alcohol

Solubility in

95% Isopropyl Alcohol

Solubility in

Propylene Glycol

190

Very Soluble

Slightly soluble

Very Soluble

Alkali

Fruit Acids

( Citric/Tartaric)

Preservatives

Benzoic Acid

Preservatives

Sulphur Dioxide

5

5

5

5

C.A.S Number

Volatile Matter at 135^oc

Sodium Chloride/Sulphate Max

Water insoluble

Matter Max.

Purity

Subsidiary dye

Max

3844-45-9

15%

0.2%

3%

Dye intermediates

Max.

Heavy Metals

PPM – Max.

Lead PPM

Max.

Arsenic PPM

Max.

1.8%

40

10

1

Molecular Weight

Spectrometry –A

Spectrometry –B

792.84

Max in water at ca 630 nm at pH7

Blue solution in water

Chemical Name

Definition

Disodium alpha -(4-(N-ethyl-3-sulfonatobenzylamino) phenyl)-alpha-(4-N-ethyl-3-sulfonatobenzylamino, cyclohexa-2,5-dienylidene) toluene-2-sulfonate

Brilliant Blue consists essentially of disodium alpha-(4-(N-ethyl-3-sulfonatobenzylamino) phenyl)-alpha-(4-N-ethyl-3-sulfonatobenzylamino, cyclohexa-2,5-dienylidene) toluene-2-sulfonate and its isomers and  subsidiary colouring matters together with sodium chloride and/or sodium sulfate as the principal uncoloured components. 
Brilliant Blue  is described as the sodium salt. The calcium and the potassium salt are also permitted.

Structural Formula

C₃₇H₃₄N₂Na₂O₉S₃

Organic Compounds other than colouring matters

[Sum of 2-, 3- and 4-formyl benzene sulfonic acids] - Not more than 1.5% [3((ethyl)(4-sulfophenyl)amino) methyl benzene sulfonic acid] - Not more than 0.3%