Formaldehyde

Description :

Formaldehyde, also known as formalin, is an organic compound with chemical formula CH2O, relative molecular mass 30.03, melting point -92℃, boiling point -19.5℃, relative density 0.815g/cm³. 35 ~ 40% formaldehyde solution is known as formalin solution.

Formaldehyde, colorless gas, low concentration is not easy to detect, it is easy to be covered by other smells, such as air fresheners, etc., when the concentration is higher, there is a strong irritating and suffocating smell, which has a stimulating effect on the eyes, nose and so on. Formaldehyde is a toxic gas that seriously endangers human health at present, and more appears in furniture and decoration materials with substandard quality. In an environment with a high concentration of formaldehyde for a long time, patients may have dizziness, headache, tears, nausea, vomiting, cough, chest tightness, leukemia, etc., which can lead to death in serious cases, so pay attention to stay away from formaldehyde in life, the newly renovated house should be frequently ventilated, and pay attention to monitoring the content of formaldehyde. Formaldehyde has reducibility, especially in alkaline solution, the reduction capacity is stronger, can burn, vapor and air to form an explosive mixture, the explosion limit of 7%-73% (volume percentage), the ignition point of about 300℃.

Formaldehyde is widely used in petrochemical, pharmaceutical, textile, bio-chemical, energy, transportation and other industries. It can be used as disinfectant and preservative, and can also be used in the preparation of phenolic resin, urea-formaldehyde resin, melamine resin, ulotropine, pentaerythritol and other products. Formaldehyde has a strong irritation to mucous membrane and has a teachrymatory effect, can make protein coagulate, touch the skin easy to make the skin hard and even local tissue necrosis.

Packing :

150kg/Iron drum, IBC tank

Application :

Products generated from formaldehyde include urea formaldehyde resin, melamine resin, phenol formaldehyde resin, polyoxymethylene plastics, 1,4-butanediol, and methylene diphenyl diisocyanate. The textile industry uses formaldehyde-based resins as finishers to make fabrics crease-resistant.

When treated with phenol, urea, or melamine, formaldehyde produces, respectively, hard thermoset phenol formaldehyde resin, urea formaldehyde resin, and melamine resin. These polymers are common permanent adhesives used in plywood and carpeting. It is used as the wet-strength resin added to sanitary paper products such as facial tissue, table napkins, and roll towels. They are also foamed to make insulation, or cast into moulded products.

Formaldehyde is also a precursor to polyfunctional alcohols such as pentaerythritol, which is used to make paints and explosives.

An aqueous solution of formaldehyde can be useful as a disinfectant and biocide.

Formaldehyde is used in the manufacture of animal feeds.

Formaldehyde preserves or fixes tissue or cells. It is used as Tissue fixative and embalming agent.

Formaldehyde is used in Drug testing and Photography.