What does the letter “O” on the bottle label mean?

Reagent bottles are containers used to store various chemical reagents. In order to distinguish different types of reagents and do a good job in laboratory safety management, different English letters are generally used on the bottle label to indicate a type of reagent, then the letter “O” What kind of reagent does it represent?
The letter “O” on the reagent bottle comes from the English abbreviation of oxygen, which stands for oxidant. Oxidizers are substances that gain electrons in a redox reaction. According to the electron-getting ability of a substance, it can be divided into strong oxidant, medium-strength oxidant and weak oxidant to roughly describe its performance in redox reactions.
Among common oxidants, fluorine gas has the strongest oxidizing property, and correspondingly, fluorine ion has the weakest reducing property. In fact, only a few compounds can oxidize fluorine ion to form fluorine gas, and it is basically a disproportionation reaction. All products with the words “high”, “heavy” and “over” in the product name, such as perchlorate, permanganate, dichromate, sodium peroxide, etc., all belong to this category. Common oxidants are oxygen (or air), chlorine, sodium dichromate, potassium dichromate, potassium permanganate, nitric acid, etc.
The oxidant itself is not easy to deteriorate and fail during storage, but it is decomposed when heated, which is easy to cause combustion and explosion, so it should not be heated, and friction and impact should be avoided during storage and transportation. If the reagent bottle is damaged, measures should be taken immediately to thoroughly clean the leaked part to avoid dangerous accidents.