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Ponceau 4R
Red 7
Synonyms:
Acid Red 18
Chemical Name:
( Trisodium 2-hydroxy-1-(4-sulfonato-1-naphtylazo)- naphtalene-6,8-disulfonate
C.I. No.:
16255
C.I. Name:
Food Red 7
FDA Status:
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CAS No.:
2611-82-7
EINECS No.:
220-036-2
E No.:
E-124
Tests
Total colouring matters calculated as the sodium salt, percent by mass.
EEC (Limit):
Min.
80
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.
Min.
0.01
Subsidiary dyes, percent by mass.
Max.
1
Organic compound other than colouring matter, percent by mass, MAX.
4-aminonaphthalene-1-sulfonic acid
7-hydroxynaphthalene-1-3-sulfonic acid
3-hydroxynaphthalene-2,7-disulfonic acid
6-hydroxynaphthalene-2-sulfonic acid
7-hydroxynaphthalene-1,3-6- trisulfonic 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
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