502 glue is a very widely used glue in our lives, and I believe everyone is familiar with it. 502 glue is not only extremely convenient to use and inexpensive, but also has excellent bonding effect, so it is deeply favored by the general public. But 502 glue is also a chemical product, so is 502 glue toxic? Is it poisonous after drying? I will give you a detailed introduction today. The concept of poison is very profound. Poison is a destructive substance. Substances that can destroy your nerves, blood, cells, tissues, etc. are called toxic substances. 502 is also a chemical product. 502 glue is a single-component instant curing adhesive made of α-cyanoacrylate ethyl ester with tackifiers, stabilizers, toughening agents, inhibitors, etc. synthesized through advanced production technology. Its physical and chemical properties: colorless, transparent, low viscosity, non-flammable liquid, single component, solvent-free, slightly pungent, volatile, volatile gas has weak tear-repellent. It is catalyzed when it encounters moisture and quickly solidifies and adheres. It is non-toxic after solidification. Structural formula: CH2=C(CN)-COO-C2H5 Principle: Addition polymerization occurs under the catalysis of trace amounts of water in the air, and the adhesive quickly solidifies and adheres firmly to the adherend. Simply put, chemical products are all toxic to a certain extent, including many things around us. It just depends on the dose value that causes harm to the human body, usually expressed by LD50 (median lethal dose). It is generally believed that substances with LD50 exceeding 5000mg/KG are non-toxic. After the 502 glue dries, the harmful solvent has evaporated, and the remaining substances are non-toxic when measured by LD50. Through the above introduction, I believe everyone already knows that for people who occasionally use 502 glue, it is non-toxic, even after it dries. However, if we are frequently exposed to 502 glue, due to its chemical composition, it will inevitably cause some harm to our body. This part of the people needs to take certain protective measures. |
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