Vinegar essence rubbed on the skin can easily corrode and burn the skin.

The main component of acetic acid is acetic acid (acetic acid), which is diluted with edible glacial acetic acid. Glacial acetic acid is corrosive to a certain extent. If it accidentally touches your skin or clothing, please rinse it immediately. It is best to dilute it before use.

Generally, the acetic acid concentration of vinegar is less than 7, but the acetic acid concentration of vinegar can reach more than 45. It will cause oral and esophageal burns and is harmful to the human body. It is best not to eat it.

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How to distinguish vinegar

1. Flavor and smell: Brewed vinegar has obvious four flavors of sour, sweet, fresh and fragrant, and the sourness is soft, while prepared vinegar has no obvious It has a sweet, fresh and fragrant flavor, and the sour taste is highly irritating;

2. Color and form: Brewed vinegar has dark brown, brown, amber, etc. depending on the variety. It has luster and clear appearance. , there is no suspended solids and sedimentation. Brewing vinegar that has been left for a long time may appear cloud-like sedimentation (but it does not affect consumption). The prepared vinegar is purely an aqueous solution of acetic acid. Its appearance is very clear and transparent, but has no luster. It is not as prone to mold and deterioration as brewed vinegar, and there will be no turbidity or precipitation after being left for a long time.

Reference: Vinegar Essence-Baidu Encyclopedia