Clothing ph value is too high to cause cancer!

By | March 12, 2019

Many of China’s standards are translated directly from experienced countries. The regulations are perfect, but the implementation is not enough. In foreign countries, even if there is a problem with the product, even the company may have to close the door; but Chinese companies rarely have this situation, and most of the clothing that has gone wrong is sold to the countryside or reduced prices.

The famous Kufama dyeing printing house in Kano, Nigeria, was built in 1498.

Good fabrics can enhance the competitiveness of ready-to-wear in the international market

Beijing Science and Technology News reported on January 26 “ What is the pH value of this dress? “5.5. You can safely wear it, there is no harm to the skin! & rdquo;

In the future, consumers will go to buy clothes, and it is likely that there will be such a dialogue with the salesperson. Since January 1 this year, the new national standards for 10 garments, including men’s suits, coats, and women’s suits, coats, trousers, ties, and woven student uniforms, have been officially implemented.

Standard drafting unit —— Shanghai Garment Research Institute staff told reporters that most of the 10 new standards were upgraded from industry standards, and some were revised from the original national standard.

Compared with the old standard in 2001, the new national standard has been adjusted in many aspects, increasing the evaluation of the pH value of the clothes, the decomposition of carcinogenic aromatic amine dyes, the dimensional change rate after washing, and the color fastness. Requirements, and for the first time increased the specification of “woven woven student uniforms”. The new national standard stipulates that the pH of garments that are in direct contact with the skin should be controlled at 4.0 to 7.5, and the pH of garments that are not in direct contact with the skin should be controlled at 4.0 to 9.0. The formaldehyde content of suits and trousers should not exceed 300 mg per kilogram.

In fact, aromatic amines, formaldehyde content, and pH values ​​have always been common problems in clothing testing, but they have not attracted enough attention. Professor Wang Jianming, director of the Lightweight Engineering Teaching and Research Section of Beijing Institute of Clothing Technology, told the Beijing Science and Technology News, “In the production process of clothing, printing and dyeing and other production processes need to add various dyes, additives and other chemical agents. Regular manufacturers can control the use of these substances within a safe range during post-processing. However, if such chemicals are excessively left in the clothes, they will have an adverse effect on the human body. ”

In order to make the clothes more flat, wrinkle-resistant and firmer, the clothing finishing agent containing formaldehyde is used in the garment process. If you wear clothes with excessive formaldehyde for a long time, the free formaldehyde will volatilize with the friction of the clothes and the human body. It will accumulate slowly after inhaling into the human body, causing respiratory diseases and even cancer.

Acidic preparations are used to process woolen fabrics; alkaline preparations are used to treat cotton garments. However, after the garment is made, its pH should be balanced within the acceptable range of the human body. The normal pH of human skin is 5.5~7.0, which is weakly acidic to protect the body from pathogen infection. If the pH of the garment is outside this range, it will irritate the skin and even cause skin infections.

The most lethal substance in clothes is decomposable aromatic amines

Wang Jianming told reporters that azo dyes synthesized by aromatic amines are used in many textiles, clothing, leather products, On the home fabric. If the azo dye is in contact with the human body for a long time, it will be absorbed by the skin, diffuse and react in the human body, and decompose more than 20 kinds of carcinogenic aromatic amine substances. After being made into clothes, the toxic dye is insoluble in water, colorless and odorless, and can only be detected by professional techniques, and it is difficult for consumers to find its trace. “Decomposable aromatic amines are forbidden, but they have strong tinting strength, high color fastness, and are much cheaper than substitutes, so they are still secretly used by some manufacturers. ”

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