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Table 11.2

Recoveries (The recovery of the amines 2, 5, 7, 8, 9, 10, 16 and 17 in the calibration solutions were determined in 6 laboratories)

 

Azocolorants in Textiles and Toys

 

% Recovery

Amine

Single results

Average

2. Benzidine
5. p-Chloraniline
7. 4,4’-Diaminodiphenylmethane
8. 3,3’-Dichlorbenzidine
9. 3,3’-Dimethoxybenzidine
10. 3,3 -Dimethylbenzidine
16. o-Toluidine
17. 2,4-Toluylenediamine

40
62
56
85
68
75
64
38

87
77
85
91
76
79
70
60

91
88
90
98
100
91
85
63

92
94
92
98
109
94
87
73

94
101
 
101
120
96
98
74

111
181
 
108
125
130
118
97

86
100
81
97
100
94
87
69