Cetylpyridinium chloride

Physical data editing
1. Properties: white solid, often with a molecule of crystal water.
2. Melting point: 77-83 ° C.
3. Solubility: Very soluble in water and ethanol, soluble in chloroform, almost insoluble in benzene and ether.
Synthesis method editing
In a mixture of 48 ml of SOCl2 and 0.3 g of HCON (CH3) 2, the temperature was controlled at 30-35 ° C with stirring, and 81 g of cetyl alcohol was added dropwise. After the dropping, the mixture was boiled for 30 minutes, cooled, and distilled to obtain a fraction of 138-140 ° C (pressure 270Pa), which was chlorohexadecane, and the yield was 92.2%. Heat 80g chlorohexadecane and 32g dry pyridine oil bath to 150-160 ℃, react for 12-15h. After the reaction is completed, add 80ml dry acetone, the mixture is heated and dissolved in a water bath and then cooled to obtain a product with a yield of 994%. The melting point is 87-88 ° C.
Purpose edit
This product is a nitrogen-containing cationic surfactant, which is mainly used as a disinfectant. Under the same conditions of use, the kill rate of this product to heterotrophic bacteria, iron bacteria and sulfate-reducing bacteria are better than dodecyldimethylbenzylammonium chloride, dodecyldimethylbenzyl chloride Ammonium bromide and other commonly used quaternary ammonium fungicides, for example, at a dosage of 10mg / L, the killing rates of this product on heterotrophic bacteria, iron bacteria and sulfate reducing bacteria are 99.9%, 99.9 %% and 99.99%. This product can be used in industrial water treatment system for sterilization and algae elimination, slime stripping and system cleaning. In the process of use, this product has the same precautions as other quaternary ammonium salt fungicides such as Jieermei, such as foaming, and association and sedimentation with other anionic substances. When using, impact feeding can be used, and the general concentration is 20-80mg / L.