Can I still use medical alcohol after the expiration date?

The main component of medical alcohol is ethanol, and it is a mixture. Medical alcohol is made from starchy plants by saccharification and then fermentation by distillation, equivalent to the process of making wine, but the distillation temperature is lower than wine, the number of distillations than wine, high alcohol, high volume of manufactured products, containing alcohol other than ether, aldehyde components more than wine, can not be drunk, but can be in contact with the human body for medical purposes. It is plant raw material products.

Maintenance personnel in the maintenance of various types of household appliances, instruments, electronic equipment, often need to make some cleaning and maintenance work, and daily life application of medical disinfectant alcohol is the best cleaning agent, which is characterized by a strong effect of decontamination, easy to evaporate, it is not only effective in removing the surface of the electrical appliances of all kinds of stains, but also on some of the electronic components of the internal stains can be quickly cleaned, and does not affect the use of electrical appliances. The use of electrical performance, the following introduction of a number of cleaning appliances, electronic components of a simple method.

Cleaning with alcohol has many benefits: 1, does not hurt your hands; 2, not harmful to the human body (in addition to the methanol-containing); 3, easy to volatilize, dry fast; 4, no corrosion of electronic components and circuit boards.

Alcohol cleaning circuit boards, washing is not clean, there are several major problems, 1, put down to wash, in fact, some of the solder joints on the side of the rosin block is very large, need to soak a moment, soak softly a moment on the wash away. 2, there is no good cleaning tools. Some people like to use soft brushes, in fact, soft brushes are too soft, some rosin blocks can not be brushed down. The best tool is to use an old toothbrush, a little hard, but will not be the board and components of the brush flowers.3, eager to finish. Alcohol is not natural water, dissolving capacity is not as strong as natural water, so when cleaning the first soak, to carefully brush the board around the solder joints, it does not take much time. There is no brush clean board picked up, has not been dissolved rosin will of course stay along the board to everywhere, after drying certainly white gray gray piece.