Allergenic Dyes Testing
The allergenic disperse dyes refer to the dyes that will cause allergy to skin, mucous membrane or respiratory passage allergy of human body or animal. Suction allergy of human body mainly fastens on respiratory passage and mucous membrane, and a part of active dyes (granule and liquid) can cause this kind of allergy.
At present, there are totally 27 kinds of allergenic disperse dyes. international well-known eco-safety standard Oeko-Tex Standard, 20 kinds of them are listed as monitoring items of ecological textiles, namely No.1-No.20 in the table below. Moreover add two kinds of allergenic disperse dyes, No.21 and No.22. These dyes are mainly used in dyeing of polyester, polyamide and cellulose acetate fibre, and 17 kinds of them are disperse dyes used in acetate fiber on early stage. Regulations in Eco-label label standard that EU presented in May, 2002: 17 kinds of dyes listed in the standard (3 less than Oeko-Tex Standard 100: C.L. Disperse Blue 1, C.I. Disperse Brown 1 and C.I. Disperse Yellow 3), and it’s not permitted when the colorfastness to perspiration of dyeing textiles is lower than Grade 4.
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Banned ADD
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No.
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English Name
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Chinese Name
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CAS No.
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1#
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Disperse Blue 1
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分散藍1
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2475-45-8
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2#
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Disperse Blue 3
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分散藍3
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2475-46-9
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3#
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Disperse Blue 7
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分散藍7
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3179-90-6
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4#
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Disperse Blue 26
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分散藍26
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3860-63-7
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5#
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Disperse Blue 35
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分散藍35
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12222-75-2
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6#
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Disperse Blue 102
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分散藍102
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69766-79-6
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7#
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Disperse Blue 106
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分散藍106
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12223-01-7
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8#
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Disperse Blue 124
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分散藍124
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61951-51-7
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9#
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Disperse Brown 1
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分散棕1
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23355-64-8
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10#
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Disperse Orange 1
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分散橙1
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2581-69-3
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11#
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Disperse Orange 3
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分散橙3
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730-40-5
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12#
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Disperse Orange 37/76
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分散橙37/76
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13301-61-6
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13#
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Disperse Red 1
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分散紅1
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2872-52-8
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14#
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Disperse Red 11
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分散紅11
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2872-48-2
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15#
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Disperse Red 17
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分散紅17
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3179-89-3
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16#
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Disperse Yellow 1
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分散黃1
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119-15-3
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17#
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Disperse Yellow 3
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分散黃3
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2832-40-8
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18#
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Disperse Yellow 9
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分散黃9
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6373-73-5
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19#
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Disperse Yellow 39
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分散黃39
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12236-29-2
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20#
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Disperse Yellow 49
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分散黃49
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54824-37-2
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21#
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Disperse Yellow 23
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分散黃23
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6250-23-3
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22#
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Disperse Orange 149
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分散橙149
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85136-74- 9
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There are some differences between the limited value of tested allergenic disperse dyes on textiles nowadays over the world and the qualified evaluation standard that different buyers draw up. It is stipulated that 20 kinds are banned in the Oeko-Tex Standard 100 and GB/T 18885 Technical Specification for Ecological Textiles and the qualified limited value of allergenic disperse dyes is set a limit to 0.006%, namely 60 mg/kg. 50mg/kg is stipulated in the Oeko-Tex Standard 100. In fact, many famous buyers stipulate that allergenic disperse dyes are not detected in the samples (under the limit of detection).|
iTC Lab adopts DIN 54231:2005-11 and § 64 LFGB B, 82.02-10: 2007-03 to test the 22 kinds of ADD above, the lower limit reaching 5 mg/Kg, meeting the EU regulations.
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