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
|
|
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#
|
Disperse Yellow 9
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分散黃9
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6373-73-5
|
|
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
|
|
21#
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Disperse Yellow 23
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分散黃23
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6250-23-3
|
|
22#
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Disperse Orange 149
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分散橙149
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85136-74- 9
|
|
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).|
PTS Testing Service 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.
What is disperse dyes testing?
Disperse dyes testing identifies what types and levels of disperse dyes you may have in your products. Disperse Dyes are organic, water soluble dyes mainly used in the dyeing of polyester, nylon and acrylic fibres, and are widely used in the textile manufacturing.
Risks of disperse dyes in products
The main risk associated with the use of disperse dyes in products in the potential to cause an allergic reaction when in contact with the skin. A number of disperse dyes have been identified as having properties to cause allergic skin reactions. There are also disperse dyes which are classified as carcinogenic.
Disperse dyes may be used in the manufacture of textiles for a range of end products, including:
Stockings
Socks
Trousers
Blouses
Lingerie
Gloves
Hats
Clothing for babies and children
One further issue with the use of disperse dyes, is that they do not demonstrate good fastness properties with all synthetic fabrics, and this may also cause problems relating both to quality and allergies.
Why test for disperse dyes?
If you are a retailer, importer, or manufacturer of clothing, accessories, textile products, or children’s toys, you need to have your products tested to identify any potentially harmful levels of disperse dyes.
A number of countries have regulations in regards to the use of disperse dyes under the food and commodity goods laws. Therefore, at PTS Testing Service Lab, we advise you to carry out the appropriate due diligence testing on your products before marketing and retailing your products.
Disperse dyes are also covered under the European standard BS EN 71 part 9:2005 Safety of Toys. This toy safety standard lists a number of disperse dye compounds that are prohibited for use in children’s toys.
