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Basic safety requirements for today’s textile auxiliaries

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Today's international market has put forward strong requirements for the safety and ecology of textiles. No matter how many certification systems and textile companies have differences in these requirements, in order to facilitate consumers to identify and purchase, the safety of textiles has a basic requirements, that is, meeting the following six requirements:

1.1 No VOC (no volatile organic compounds)
VOC refers to volatile organic compounds such as toluene, xylene, styrene, vinylcyclohexane, phenylcyclohexane, butadiene, vinyl chloride, formaldehyde, aromatics, gasoline, kerosene, white essential oils and polycyclic aromatics Hydrocarbons (such as tar), etc., which can cause great harm to human health and the surrounding environment, therefore many foreign countries have formulated VOC regulations. Currently, the most extensive VOC regulations in the world are CleanAirAct of the United States, CleanAirAct of the European Union, Switzerland and other countries also have VOC regulations.

1.2 No FA or low FA (no formaldehyde or low formaldehyde)
Regarding the content of formaldehyde (FA) in textile auxiliaries, domestic and foreign regulations have been promulgated for a long time. Recently, many regulations and standards in the international market and the chemical restrictions of brand textile sellers have stricter requirements for formaldehyde content. In accordance with these requirements, domestic and foreign textile auxiliary manufacturers have developed many low-formaldehyde (formaldehyde content <75×10-6) and formaldehyde-free auxiliaries to replace formaldehyde-containing auxiliaries, including color fixing agents, anti-wrinkle and easy-iron products. Finishing agents, adhesives, cross-linking agents, dispersants, flame retardants and waterproof and oil-repellent agents, etc. Based on the current situation analysis, there is a certain foundation for substitution, and it is possible to achieve formaldehyde-free or low-formaldehyde-free textile auxiliaries.

1.3 No DS (no dangerous chemical substances)
DS refers to a hazardous chemical substance with a low ignition point. For example, the ignition point of acetone is -20°C, which is a hazardous chemical substance. At present, in order to ensure that textile auxiliaries do not contain hazardous chemicals, they are all prepared with high ignition point and safe chemicals. For example, the ignition point of dipropylene glycol methyl ether is 74°C, and the ignition point of tetrapropylene glycol methyl ether is 74°C. The ignition point of hexanediol is 135℃, 110℃, etc. It is safer to use them to replace acetone to prepare textile auxiliaries. Another example is that kerosene has a low ignition point, and the emulsified thickening slurry prepared with it is flammable, explosive, and highly dangerous. Now it is replaced by synthetic thickeners that do not contain mineral oil or have low mineral oil, which greatly improves the Safety of Pigment Printing.

1.4 No EH (no environmental hormones)
Among the 70 environmental hormones (EH) currently recognized in the international market, environmental hormones related to textile auxiliaries include polychlorinated biphenyls, alkylphenols, polychlorinated dibenzo-p-dioxins, phthalate esters, There are 26 types of chlorinated phenols, organotin compounds, benzophenones and p-nitrotoluene, accounting for 37% of the number of environmental hormone varieties. These environmental hormones enter textile auxiliaries in different ways: (1) used as raw materials; (2) as final products; (3) produced as by-products during the preparation of auxiliaries; (4) when the products are exposed to high temperatures or burned produce.

1.5 No PFOS and PFOA (no perfluorooctane sulfonate, sulfonylate and perfluorooctanoic acid)
PFOS and PFOA are both organic fluorine compounds. Currently, there are strict restrictions on them in the international market. They are a safety issue worthy of attention in today's textile auxiliaries.

1.6 No AOX (no adsorbed organic halides)
AOX is the English abbreviation of adsorbable organic halide, which refers to organic halide that can be adsorbed by activated carbon. Because AOX will react under certain conditions to form carcinogens such as polyhalogenated dibenzo-p-dioxins (PHDDO) and polyhalogenated dibenzofurans (PHDF), it is very harmful to human health and the ecological environment. Many varieties of textile auxiliaries belong to AOX, which can be summarized into the following five categories: (1) halogen-containing organic carriers; (2) chlorinated hydrocarbon solvents; (3) halogen-containing finishing agents; (4) halogen-containing precursors Treatment agent; (5) Polyvinyl chloride.

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