1. formaldehyde content: the current national standard value is ≤ 100mg/kg. ?
2.VOC content: VOC (volatile organic compound) content. At present, the country is implementing mandatory standards, that is, VOC ≤120g/L.
3. Heavy metal content: Heavy metals mainly refer to soluble lead, cadmium, chromium, mercury and other substances. Some heavy metals are essential trace elements for human body at a certain concentration, but when the amount entering human body exceeds the tolerance limit, it will cause serious physiological damage and cause many diseases. Lead poisoning in children is more serious, and children have special susceptibility to lead. The United States federal regulation CFR 1303 stipulates that lead content greater than 60mg/Kg is lead-containing paint, which is prohibited from being used in public places or indoor decoration.
Extended data:
3A Characteristics of Environmental Protection Coatings:
1. The reason why this kind of material is called paint is more due to the development of varieties and categories of paint, because the name of paint can not cover all kinds of products in the industry, and the word paint can cover all kinds of products in the industry, so it is more accurate and scientific to use the name of paint.
For example, powder coating products should not use the title of paint, and paint and coating are not interchangeable here. Therefore, coatings can cover solid powder coatings and liquid coatings, but they cannot be replaced, so the explanation in the standard is not in place.
2. There is something wrong with the "notice" of the coating terminology in the standard, that is, the word "paint" can be used in the name of a specific coating variety, such as ready mixed paint and Thick Paint. Because in fact, the word "paint" is not only used in specific paint varieties, but also used in a large number of paint categories, such as acrylic paint and polyurethane paint. It is also widely used in application fields, such as anticorrosive paint, automobile paint, ship paint and so on. In fact, except for a few cases, the words lacquer and lacquer are universal and can only be expressed by specific varieties.
Baidu encyclopedia-environmental protection coating material
People's Network-What's the standard of environmental protection paint?