Formalin is a commercial solution with a concentration of 10-40% of formaldehyde. This material is usually used as an antiseptic, germisida, and preservatives. Formalin has many chemical names are: Formol, methylene aldehyde, Paraforin, Morbicid, Oxomethane, Polyoxymethylene glycols, Methanal, Formoform, Superlysoform, formic aldehyde, Formalith, Tetraoxymethylene, Methyl oxide, Karsan, Trioxane, Oxymethylene and methylene glycol. In the market, formalin can be found in a form that has been diluted, with a formaldehyde content of 10-40 percent.
Formalin into the human body via two roads, namely the mouth and breathing. In fact, everyday we inhale formaldehyde from the surrounding environment. Pollution generated by the exhaust and factory smoke, containing formaldehyde that inevitably we breathe, and then enters the body. Cigarette smoke or rain falling to earth was in fact also contain formaldehyde.
Formaldehyde is very dangerous if inhaled, about the skin and swallowed. Consequences may include: severe burns on the skin, irritation of the respiratory tract, allergic reactions and the danger of cancer in humans. If a high content in the body, will react chemically with almost all substances in cells, thus suppress cell function and causes cell death that causes damage to organs. Formaldehyde is a substance that is carcinogenic or can cause cancer. Some studies on rats and dogs given doses of formalin in the long run lead to significant gastrointestinal cancers such as adenocarcinoma pylorus, pylorus preneoplastic hyperplasia and adenocarcinoma of the duodenum. Other studies mentioning increased risk of cancer, pharynx (throat), sinus and nasal cavum (nose) in textile workers caused by exposure to formaldehyde through breathing.