The IUPAC name of Dimethyloctadecylbenzylammonium chloride is benzyl-dimethyl-octadecylazanium chloride. With the CAS registry number 122-19-0, it is also named as Stearyl dimethyl benzyl ammonium chloride. The product's categoriesare Hair Care; Home Care; Ammonium Chlorides (Quaternary); Aromatic Quaternary Ammonium Salts (Surfactants); Cationic Surfactants; Functional Materials; Quaternary Ammonium Compounds; Surfactants. It is white solid or thick liquid with a mild odor which is soluble in water, resistant to acid, hard water, inorganic salt, and non-resistant to alkali. Additionally, this chemical should be stored in the cool and dry place.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 4.28; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 4.28; (4)ACD/LogD (pH 7.4): 4.28; (5)ACD/BCF (pH 5.5): 1053.58; (6)ACD/BCF (pH 7.4): 1053.58; (7)ACD/KOC (pH 5.5): 5072.53; (8)ACD/KOC (pH 7.4): 5072.53; (9)#H bond acceptors: 1; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 19; (12)Rotatable Bond Count: 19; (13)Exact Mass: 423.363178; (14)MonoIsotopic Mass: 423.363178; (15)Topological Polar Surface Area: 0; (16)Heavy Atom Count: 29; (17)Complexity: 316.

Preparation of Dimethyloctadecylbenzylammonium chloride: It can be obtained by dimethyloctadecylamine and benzyl chloride. Adding 450 kg dimethyloctadecylamine to reactor and  heating to 80～85°C. Adding 180kg benzyl chloride slowly within the 1.5-2h at the temperature of 80-90 °C. Finished, heating to 100-105 °C. When the pH is 6-6.5, the reaction is finished. Wecan get 600kg product.

Uses of Dimethyloctadecylbenzylammonium chloride: It is mainly used as grease thickening agent, medicine fungicide, textile wetting agent, finishing agent, softener, antistatic agent and so on. It is also used in hair care formulations, as a hair conditioner and cream rinse.

When you are using this chemical, please be cautious about it as the following:
It is not only harmful by inhalation and in contact with skin, but also has risk of serious damage to the eyes. Besides, it is very toxic to aquatic organisms. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) So people should avoid release it to the environment. Refer to special instructions / safety data sheets.

People can use the following data to convert to the molecule structure. 
1. SMILES:[Cl-].c1ccccc1C[N+](C)(CCCCCCCCCCCCCCCCCC)C
2. InChI:InChI=1/C27H50N.ClH/c1-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-22-25-28(2,3)26-27-23-20-19-21-24-27;/h19-21,23-24H,4-18,22,25-26H2,1-3H3;1H/q+1;/p-1

The following are the toxicity data which has been tested.