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WHAT TO REGULATE ?
UNSUAL MIGRANTS:
DEGRADATED AZO COLORANTS (DICHLOROBENZIDINE)
H
H
C
O
C
H
N
C
H
H
H
H
N
Cl
Cl
N
Ar
R
Cl
R
O
N
C
O
N
N
Cl
Cl
N
R
Cl
R
Cl
R
R
O
O
O
O
N
N
N
N
N
Cl
Cl
N
Az, 1991
> 240C
Extrusion
uncolored
colored
R = OMe : C I Pigment Yellow 83
MUTAGENESIS
AROMATIC AMINES
Of all the diarylide pigments, C.I. Pigment Yellow 83 is used because of its fastness properties mainly
for the mass colouration of plastics. The processing temperatures must not exceed 200C.