Is the colored mud of children's toys poisonous? There is such a news that the colored mud played by children is poisonous, but all the articles hardly mention the specific time, people and key hospitals. At present, colorful mud and clay are "three noes" products, which are directly packed in transparent plastic bags, and there is no information about manufacturers, raw materials, service life and so on. In order to reduce costs and compete at low prices, some enterprises will use an additive called lithopone, which is a mixture of zinc sulfide and barium sulfate. This raw material can make the color of colored mud and clay more vivid. This material may cause skin irritation, redness and itching in children.
When making colored clay and toys, ordinary manufacturers will strictly follow the current national standards and enterprise standards, and will not use additives that may cause children's allergies. To buy colored mud for children, you should choose products that meet EU safety standards. For example, this Hani marine colored mud that has passed the EU EN7 1-3 test can be safely used by children. The EU EN 7 1-3 toy safety standard strictly limits the chemical elements of 19 on the toy surface coating, which can prevent children from ingesting heavy metals when biting toys and affect their health! In other words, this is a test based on biting rather than touching.
What are the hazards of children's long-term exposure to heavy metals? Children have special physiological characteristics, and generally have a strong absorption capacity for heavy metals, but it is difficult to discharge them. Heavy metals are easy to form "enrichment" in children, which may produce muscle toxicity, leading to paralysis and paralysis of skeletal muscle and smooth muscle.
Among them, heavy metal barium will change the permeability of cell membrane. After "enrichment", potassium may flow from blood to cells, affecting cardiovascular health and leading to chronic diseases. Generally, soluble barium in some plastic materials, such as barium carbonate, is harmful to human body.
If children contact and eat colored clay products containing barium for a long time, the initial mild symptoms are nausea and vomiting, and long-term excessive contact will cause diseases and other hazards.
First of all, China's "National Technical Specification for Toy Safety" only limits eight transportable elements in colored clay, and does not contain boron. China's code has not been updated for ten years. Therefore, even the products that pass the test this time do not mean that they are safe.