Antioxidants are substances that block the adverse effects of oxygen. It is a class of substances that can help capture and neutralize free radicals, thereby eliminating the damage caused by free radicals to the human body. Antioxidants refer to food additives that can prevent or delay the oxidation of food, improve the stability of food and prolong the storage period. The correct use of antioxidants can not only prolong the storage period and shelf life of food, bring good economic benefits to producers and consumers, but also bring better food safety to consumers.

Antioxidants can be used as hydrogen donors to scavenge free radicals generated during the chain initiation stage, thereby inhibiting or reducing the oxidation of oils. Therefore, in order to delay the oxidation of fats and extend their shelf life, the most common and effective way is to add antioxidants to the fats.

Acetic acid, commonly known as acetic acid (AcOH) because it is the main component of vinegar, is one of the most important fatty acids. In nature, it occurs in many plants as free or esters. Molecular formula CH3COOH.

TDI is the abbreviation of toluene diisocyanate. TDI is a polycyanate widely used in industrial production. It is a polyurethane material and an important basic material. Mainly used to make flexible polyurethane foam, polyurethane elastomer, coatings, adhesives, etc.

Store in a cool and ventilated warehouse. Avoid burning and heating. Separate oxidizer boxes to avoid mixed storage.

N-Methyldiethanolamine (MDEA) is commonly used to solve the acid gas containing hydrogen sulfide and CO2 in industrial production. It can absorb hydrogen sulfide and part of CO2.

Ammonia is an aqueous solution of ammonia. It is colorless, transparent and has a pungent smell. So what are the properties of ammonia?

Antioxidant is a kind of plastic additives that can effectively reduce the self-oxidation reaction rate of plastics and promote the degradation of plastics.

Glacial acetic acid is actually anhydrous acetic acid, an organic compound. As an organic acid, acetic acid will condense into ice-like crystals when it is lower than the melting point.

The solid defoamer is generally added in the form of spraying, and the viscosity of the coating is relatively large. In this case, if the solid defoamer particles are relatively fine, it is very likely that the particles cannot be effectively dissolved, which will eventually cause a large amount of The precipitation material.

Special combination instruments, such as Kjeldahl trace nitrogen analyzer, K-D evaporation concentrator, rotary evaporation concentrator, etc., should be cleaned and protected.