In addition to formaldehyde jelly is actually a kind of gel, which can slowly release chlorine dioxide to remove formaldehyde. But it's enough for a small sealed drawer.
In addition to formaldehyde's effective method
Formaldehyde is usually a colorless gas with a pungent smell. Soluble in water and ether, the highest concentration of aqueous solution can reach 55%[2], miscible with organic solvents such as ethanol and acetone in any proportion, insoluble in petroleum ether.
The most economical and effective way to remove formaldehyde is to open the window for ventilation.
On the one hand, the dilution of fresh air can dilute indoor pollutants, which is beneficial to the discharge of indoor pollutants. On the other hand, it is helpful to release toxic and harmful gases in decoration materials as soon as possible. Open the window for ventilation at the right time every day. Generally, after 10 in the morning, it should be ventilated for 20 minutes in the morning, noon and evening.
Formaldehyde is an organic chemical with the chemical formula HCHO or CH? o？ [1], molecular weight 30.03? [2], also known as ant aldehyde. ? It is a colorless and irritating gas, which is irritating to human eyes and nose.
The relative density of gas is 1.067 (air = 1), and the density of liquid is 0.8 15g/cm? (-20℃)。 Melting point -92℃, boiling point-65438 09.5℃. Soluble in water and ethanol. The highest concentration of aqueous solution can reach 55%, generally 35%-40%, generally 37%. It is called formaldehyde water, commonly known as formalin.
It is reducible, especially in alkaline solution. Can burn, steam and air form an explosive mixture, the explosion limit is 7%-73% (volume), and the ignition point is about 300℃.
It can be prepared by dehydrogenation or oxidation of methanol under the catalysis of metals such as silver and copper, and can also be separated from oxidation products of hydrocarbons. It can be used as raw materials for phenolic resin, urea-formaldehyde resin, vinylon, urotropine, pentaerythritol, dyes, pesticides and disinfectants. Industrial formaldehyde solution generally contains 37% formaldehyde and 15% polymerization inhibitor methanol, and its boiling point is 10 1℃. ?
2017101On October 27th, the list of carcinogens published by the International Agency for Research on Cancer of the World Health Organization included formaldehyde in the list of carcinogens. On July 23rd, 20 19, formaldehyde was listed in the List of Toxic and Harmful Water Pollutants (the first batch).
Refer to the above content: formaldehyde (chemical substance) _ Baidu Encyclopedia