Multiple governing bodies, such as the European Union (EU) and the State of California, have created restrictions on the inclusion of Azo dyes in consumer products, specifically textiles and leathers that come into prolonged contact with the skin. The legal limit for each harmful amine is 10 parts per million (ppm). This means that, in order to remain compliant, harmful Azo dyes must make up less than 0.003% of the mass of each leather and textile component included in a regulated product.
To avoid running afoul of the various consumer safety laws and industry regulations that restrict the use of Azo dyes in consumer products, manufacturers send samples of their design materials to testing labs like PTS Testing Services for analysis. We test client samples for these substances using a method called Gas Chromatography / Mass Spectroscopy (GC/MS).
About the Method
GC/MS is a destructive method of testing that yields information on the chemical composition of the analyte. PTS Testing Service chemical analysis lab uses this method to isolate, identify, and measure compounds of interest if present in sample materials. PTS provides results at the parts-per-billion (ppb) level when performing this test — a far greater sensitivity than required by regulations on Azo dyes. We can achieve these low detection limits because of the sensitivity of PTS Testing Service analytical equipment and our chemists’ experience in regularly performing the method to relevant standards.
Full List of Restricted Substances
The table below reflects the full list of Azo Dyes restricted by either the EU under REACH, or the California Environmental Protection Agency (EPA) under Proposition 65, or both:
|
No. |
CASS No. |
Chemical Name |
|
1 |
92-67-1 |
4-Aminodiphenyl |
|
2 |
92-87-5 |
Benzidine |
|
3 |
95-69-2 |
4-Chloro-o-toluidine |
|
4 |
91-59-8 |
2-Naphthylamine |
|
5 |
97-56-3 |
o-Aminoazotoluene |
|
6 |
99-55-8 |
2-Amino-4-nitrotoluene |
|
7 |
106-47-8 |
p-Chloroaniline |
|
8 |
615-05-4 |
2,4-Diaminoanisole |
|
9 |
101-77-9 |
4,4′-diaminodiphenylmethance |
|
10 |
91-94-1 |
3,3′-Dichlorobenzidine |
|
11 |
119-90-4 |
3,3′-Dimethoxybenzidine |
|
12 |
119-93-7 |
3,3′-Dimethylbenzidine |
|
13 |
838-88-0 |
3,3′-Dimethyl-4,4′-diaminodiphenylmethane |
|
14 |
120-71-8 |
p-Cresidine |
|
15 |
101-14-4 |
4,4′-methylene-bis-(2-Chloroaniline) |
|
16 |
101-80-4 |
4,4′-Oxydianiline |
|
17 |
139-65-1 |
4,4′-Thiodianiline |
|
18 |
95-53-4 |
o-Toluidine |
|
19 |
95-80-7 |
2,4-Toluenediamine |
|
20 |
137-17-7 |
2,4,5-Trimethylaniline |
|
21 |
60-09-3 |
p-Phenylazoaniline |
|
22 |
90-04-0 |
o-Anisidine |
|
23 |
96-28-1 |
2,4-Xylidine |
|
24 |
87-62-7 |
2,6-Xylidine |
|
25 |
106-49-0 |
p-Toluidine |
|
26 |
108-44-1 |
m-Toluidine |
PTS Testing Service as For enterprises and cross-border e-commerce around the world to provide one-stop authoritative third-party product certification and testing services. (including CE(LVD/EMC/RED/RoHS/REACH/EN71)、EPR/WEEE/BattG、CPC(CPSC/CPSIA/ASTM F963/Ca Prop 65/FCC/UL)、CCPSA(SOR/2011-17)、AS/NZS ISO 8124、GB6675、LFGB、FDA、POPs、TSCA、TPCH、PFAS、PAHs、SCCP、GB 4806、GB 18401、GB 31701、QB/T 1333、QB/T 2155, Formaldehyde, AZO, Carcinogenic Sensitized Dyes, Organotin, Phthalates, Heavy metals, Nickel release, Salt spray corrosion, High temperature aging, component analysis Report). We serve a wide range of industries: contained on textile, footwear, bags, Toys, electronics, arts and crafts, cosmetic, Watches, Eyewear, Jewelry & Accessories ,Glass, Children products, Garment, Furniture, Lighting fixture, Beauty & Cosmetic Electric, Care Massage Product Field, Adult products Sex toys Products, electronic and many other fields.
