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.

禁用的致敏染料
编号	染料英文名称	染料中文名称	CAS No.
1#	Disperse Blue 1	分散蓝1	2475-45-8
2#	Disperse Blue 3	分散蓝3	2475-46-9
3#	Disperse Blue 7	分散蓝7	3179-90-6
4#	Disperse Blue 26	分散蓝26	3860-63-7
5#	Disperse Blue 35	分散蓝35	12222-75-2
6#	Disperse Blue 102	分散蓝102	69766-79-6
7#	Disperse Blue 106	分散蓝106	12223-01-7
8#	Disperse Blue 124	分散蓝124	61951-51-7
9#	Disperse Brown 1	分散棕1	23355-64-8
10#	Disperse Orange 1	分散橙1	2581-69-3
11#	Disperse Orange 3	分散橙3	730-40-5
12#	Disperse Orange 37/76	分散橙37/76	13301-61-6
13#	Disperse Red 1	分散红1	2872-52-8
14#	Disperse Red 11	分散红11	2872-48-2
15#	Disperse Red 17	分散红17	3179-89-3
16#	Disperse Yellow 1	分散黄1	119-15-3
17#	Disperse Yellow 3	分散黄3	2832-40-8
18#	Disperse Yellow 9	分散黄9	6373-73-5
19#	Disperse Yellow 39	分散黄39	12236-29-2
20#	Disperse Yellow 49	分散黄49	54824-37-2
21#	Disperse Yellow 23	分散黄23	6250-23-3
22#	Disperse Orange 149	分散橙149	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 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 BLC, 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.