The main active ingredient in almost all insect/mosquito repellents is DEET (tradename) Nitrogen Dimethyl Nitrogeneous Toluomide.
Other examples of chemical technology include the making of alloys, such as brass and bronze, to enhance the properties of metals; the extraction of chemicals from plants and animals for use as fabric dyes; the chemical treatment of animal hides; the development of different methods of cooking foods; the development of perfumes; and the extraction and use of oils for skin treatment and in lamps.
Zingiberene is a natural antioxidant and antifertility agent. It is also useful in fragrances and insect repellent. During synthesis enzymes encode zingiberene and a separation takes place. It is said to provide sesquiterpene.
the chemicals that eliminates plants are called herbicides, and pesticides eliminate pests
There are many ways cotton can be treated with chemicals these include : so it becomes water repellent shrink resistant burn resistant coloured crease resistant glazed ( i don't no what that means so if you know please tell me!) i know you only wanted three but these are the ones it said on my textiles homework :) hope i helped
none
RID Insect Repellent was created in 1956.
Cedar oil is a natural insect repellent. It works on fleas all the way up to snakes.
Use insect repellent.
No
In most supermarkets where the insect sprays are.
you get insect repellent and spray it on your toes, they kill them and get rid of them. you can get insect repellent at the shops such as: Coles, Woolworths, Bilo etc.
D-15 Amway insect repellent is available at a number of retailers. It can be purchased at the Home Depot or Lowes.
Insect repellent can and does expire. Over time it will lose its effectiveness. The expiration date should be located on the can itself.
Tabard insect repellent is one of the world's leading insect repellents on the market. However, as of June 2014, Tabard is not currently available for purchase in the United States.
If you go into the woods, you should wear insect repellent. The candidate considered political fundraising repellent, but necessary.
familys
Orange peels can be used to make an effective insect repellent. The active ingredient can be extracted into a liquid solution.