Nanjing Chemical Material Corp.

Principle: Ethyl iodide is usually reacted with ethanol, iodine and red phosphorus, but the reaction is slow, and it needs to be heated in a reflux device for several hours.   Supplies: Flask, straight condenser, beaker, red phosphorus, alcohol, iodine crystals, zeolite, 5% NaOH solution, anhydrous calcium chloride.   Operation: 2 g of red phosphorus and 25 ml of alcohol were added to a 125 ml flask, and 18 g of finely divided iodine crystals were added in portions under shaking, followed by the addition of 3 zeolites. A straight condenser was placed on the flask and allowed to reflux for half an hour by heating in a water bath. After the reaction is completed, the mixture is cooled, and the reflux straight condenser is discharged, and then the condenser is replaced with a common distillation apparatus. It should be noted that the receiver should be filled in a cold water bath to prevent the produced iodoethane from being volatilized.   The iodoethane was distilled off in...

The nature and use of glycyrrhizic acid Licorice is the root of leguminous plants, mainly produced in Mongolia, Shanxi, Gansu, Ningxia and Xinjiang. Licorice is sweet, so it is also known as sweet grass and honey grass. There are four main chemical components: triterpenoids, flavonoids, alkaloids and polysaccharides. Among them, the triterpenoids include glycyrrhizic acid and hydroxyglycyrrhetinic acid.   monoammonium glycyrrhizinate  is also known as glycyrrhizin. It is white crystal, crystallized with glacial acetic acid, and has a strong sweet taste. The molecular formula is C42H62O16 and the molecular weight is 822.90. The pure product is a white, odorless crystalline powder. Its melting point is 212 ℃ ~ 217 ℃, soluble in hot water and hot dilute ethanol, almost insoluble in anhydrous ethanol or ether. Glycyrrhizic acid is often present in plants in the form of calcium, potassium, ammonium salts, and the like. The ammonium salt extracted from the licorice extract prepared ...

The DMC catalyst  is double metal cyanide catalyst. Compared with similar polyols made using basic(e.g., KOH)catalysts, polyether polyols made from the catalyst have low unsaturations, narrow molecular weight distributions, have high molecular weight, and are useful in making a variety of polyurethane products. DMC catalyst  is highly active in epoxide polymerization reactions used to prepare polyether polyols.   We can yield the DMC more than 20000 kg within one year, and thus afford to produce 50 ～ 70 ten thousand tons of polyols. This catalyst is white or light yellow powder, is suitable for preparation of polyols with 1~6 functions. Compared with basic catalysts, this catalyst can be used with less amount (30ppm), and reaction time of polymerization is reduced largely, and the polyols products are not necessary to be refined. The DMC is suitable for using in common epoxide polymerization reactors, but it can be better if reactors have both of stirring and cycling syst...

  Features of Cocamido Propyl Betaine (CAB-35) Product Name: Cocamido propyl betaine( CAB   35 ) Chemical Formula: C19H38N20 CAS No.: 61789-40-0 Dangerous Grade: Non-dangerous   Package and Storage 200kg drum Store in a cool dry place, keep drums closed when not in use   Application /Application Industries amphoteric surfactant babble bath, shampoo,other body wash product or personal hygiene product CAB is an amphoteric surfactant with good cleaning, conditioning and compatibility with anionic, cationic and non-ionic surfactants. CAB features low irritating property, mild performance, fine and stable foam. It is suitable for shampoo, shower gel, facial cleanser, etc. It can enhance the softness of hair and skin. When CAB is combined with an anionic surfactant, it shows obvious thickening performance and can also be used as a conditioner, wetting agent, bactericide, antistatic agent. Because of it's good foaming property, it is widely used in oil field exploitation, a...

  Cationic surfactants are mainly nitrogen-containing organic amine derivatives. Since the nitrogen atoms in their molecules contain lone pair electrons, they can bind hydrogen with hydrogen molecules in the acid molecule and bring the amino group to positive charge. Therefore, they have good surface activity in acidic media; they easily precipitate in alkaline media and lose surface activity. In addition to nitrogen-containing cationic surfactants, there are also a small number of cationic surfactants containing elements such as sulfur, phosphorus, and arsenic.   Palmity Tri-methyl Ammonium Chloride Chemical Formula: C21H46ClN CAS No.:112-02-7 Dangerous Grade: Non-dangerous Stearyl Tri-methyl Ammonium Chloride Chemical Formula: C21H46ClN CAS No.: 112-03-8   Dangerous Grade: Non-dangerous Cationic surfactants have a long history of industrial use, and demand has been increasing rapidly year by year, but due to its special use as fungicides, fiber softeners and antistatic ...

  Features of Calcium Propionate Product Name: Calcium Propionate Chemical Formula: C6H10CaO4 CAS  4075-81-4 Dangerous Grade: None Package and Storage: 25kg/bag Store in a cool, dry place. Store in a tightly closed container. Application /Application Industries: Food additives Feed additives   If you want to know more about DMC Catalyst , please visit our website.