Za wikipedią:
Jak zrobić:DEET was developed by the United States Army, following its experience of jungle warfare during World War II. It was originally tested as a pesticide on farm fields, and entered military use in 1946 and civilian use in 1957 (marketed as 6-12).
Koncentracja:A slightly yellow liquid at room temperature, it can be prepared by converting m-toluic acid (3-methylbenzoic acid) to the corresponding acyl chloride, and reacting with diethylamine:
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Pełny artykuł jest tutaj: http://en.wikipedia.org/wiki/DEETDEET is often sold and used in spray or lotion in concentrations up to 100%. Consumer Reports found a direct correlation between DEET concentration and hours of protection against insect bites. 100% DEET was found to offer up to 12 hours of protection while several lower concentration DEET formulations (20%-34%) offered 3–6 hours of protection. Other research has corroborated the effectiveness of DEET. The Center for Disease Control recommends 30-50% DEET to prevent the spread of pathogens carried by insects.
Znalazłem także PL wersję: http://pl.wikipedia.org/wiki/N,N-dietylo-m-toluamid
Zrobiłem szybki przegląd środków na rynku i okazuje się że taki OFF dla przykładu ma tylko od 10 do 30% tego DEET.
Zakładki