Regardless of WHO (World Health Organization), CDC (United States Centers for Disease Control and Prevention), NPIC (National Pesticide Information Center), the chemical mosquito repellent compounds recommended by these authorities include the following 4 types: DEET, Icaridin, IR3535, and SS220 .
DEET chemical name is N,N-diethyl-3-methylbenzamide, also known as acetaminophen, commonly known as mosquito repellent, mosquito repellent, is currently the world’s largest amount of mosquito repellent chemicals. After more than 50 years of verification by many countries around the world, it is a highly effective and low-toxic mosquito repellent product.
DEET is the fog of war of mosquitoes, which can cover up human sweat and 1-octen-3-ol (1-octen-3-ol) in the breath, so that mosquitoes can not find the north. Subsequent studies have shown that DEET’s mosquito repellent mechanism is very complex. Until now, humans have not fully understood why DEET can repel mosquitoes.
The current mainstream view is that DEET mosquito repellent products with a content of less than 30% are absolutely safe, but it is still not recommended for babies within 2 months. Safety first, for babies, there are very few things that can be used, and it is still good for physical mosquito repellent.
Icaridin’s chemical name is 1-(1-methylpropoxycarbonyl)-2-(2-hydroxyethyl) piperidine, with many trade names, and it is the most effective mosquito repellent except CDET certified by CDC. Interestingly, the commercially available Icaridin is actually a mixture of 4 optical isomers, all of which have mosquito repellent activity.
Icaridin’s Chinese name is Ecaridin, and it also has a name called Picaridin. In general, Icaridin and DEET have little difference in mosquito repellent effect, but the safety is greatly improved, and the skin irritation after testing is also less. But it is also not recommended for infants within 2 months.
IR3535 is commonly known as mosquito repellent or mosquito repellent ester, the chemical name is 3-(N-n-butyl-N-acetyl)-aminopropionic acid ethyl ester, also known as ethyl butylacetamidopropionate, the Chinese common name is Iraq Munning. This compound itself is a derivative of β-alanine, and its biodegradation is relatively complete, and its toxicity to the human body and the environment is negligible.
The biggest advantage of is safety. Among the mosquito repellents recommended by WHO and CDC, IR3535 is the only one that can be used for infants, pregnant women and lactating women.
SS220 is a promising mosquito repellent compound. Under field conditions, DEET is far less effective than SS220-under the same conditions, the former can only provide 2 hours of mosquito repellent protection, while the latter has a protection time of up to 5 hours.
SS220 has a light fruity fragrance, little irritation to the skin, and a low probability of causing allergies; it also has a longer retention time on the skin and will not damage the plastic. However, only one isomer of SS220 is active, which means that the cost of synthesis will be high.
The effect of plant extracts is very limited. Some of the mosquito repellent products known as “pure plant extracts”, some have added mosquito repellent chemicals in a dark rub; others simply do not add mosquito repellent by faith and probability.