Formaldehyde - a toxic substance in daily environment.\r\n
H2CO or CH2O - called chemical compound formaldehyde (methane correct scientific name methyl aldehyde, 37% aqueous solution of formaldehyde is known as formalin) is a colorless gas with a pungent odor. It is the simplest aldehyde.
Formaldehyde was first synthesized by the Russian chemist Aleksandr Butlerov in 1859 but was only identified in 1867, August Wilhelm von Hofmann by.
Formaldehyde result of burning carbon-containing materials. It can be found in forest fires, in automobile exhaust and cigarette smoke. In Earth's atmosphere, formaldehyde is produced by the action of sunlight and oxygen on methane and other hydrocarbons. Small amounts of formaldehyde are produced by the metabolism of many organisms including the human.
Formaldehyde is one of the oldest chemicals used in industry for obtaining resins, used in the manufacture of wooden panels then. Also, formaldehyde is a substance usual in the manufacture of sports equipment, medicines, food, footwear, automotive components aa, paper, textiles, etc.
Germany and Italy are the countries that most annual production of formaldehyde in the European Union, providing around 10% of the amount produced annually in the world. Western Europe consumes 30% of global consumption.
Formaldehyde is a toxic substance and has been included by scientists in class probably carcinogenic substances. However we can find even in our homes, because it goes into disinfectants, adhesives for wallpaper, paints, textiles resistant foams used for insulation and, most importantly, made semi wooden furniture: pale, hardboard, plywood. Cigarette smoke also contains formaldehyde.
This one piece of furniture is usually not enough to Reliz harmful concentrations of formaldehyde, but combining multiple sources of formaldehyde can be dangerous.
If you are exposed to a large amount of formaldehyde in a short time, ie when working or sleeping in poorly ventilated rooms where there are sources that emit this substance, you may suffer from irritation of the eyes, nose, throat, or skin headaches or sleep disorders.\r\n
Formaldehyde (HCHO) is a substance very present in today's technological world. Nearly half of formaldehyde produced is used for the manufacture of resins, urea and phenol formaldehyde used as adhesives or binders for wood products creating crowded or plywood, insulation foams for packaging and products. Formaldehyde polymers are used in papermaking wallpaper, carpets and textiles. Formaldehyde is also used to preserve cosmetics and toiletries and food packaging, in concentrations up to 1%.
The emission of formaldehyde from foam (where at least 0.5% by weight of free formaldehyde), is characterized by a peak after the release continues at a low level. Formaldehyde enters the body through breathing, through the skin or be ingested.
The concentration of formaldehyde can be calculated using the equation:\r\n
C = A E / (r N V)\r\n
Where: E - emission rate [mg / (m2 .h)] r - air density [kg / m3] V air volume of the room, N - number of air exchanges; also depends on temperature, humidity and age source.\r\n
Material / formaldehyde emissions [mg / (h * m2)]:
Planks chips Board - 0.46 - 1.69
Scaduri compressed cellulose - 0.17 - 0.51
Plasterboard plaster - 0 - 0.13
Paper wallpaper - 0 - 0.28
To avoid these effects Consumer Protection Association recommends:\r\n
1. Ask the seller what it is made furniture and buy products with low emission of formaldehyde. Adhesives made from urea formaldehyde resins are more dangerous than those with phenol.
2. If the furniture has a strong odor, drain it, or well ventilated rooms.
3. High temperatures and high humidity emission of formaldehyde. Drain the bathroom and kitchen when wash or cook.
4. Do not place furniture with heat.
5. Wash curtains that do not require ironing before use.
6. Do not use in confined spaces insulating foams based on urea-formaldehyde.