Nanjing Chemical Material Corp.

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 ...

Features of Carbomer 940 Product Name: Carbomer940 C arbomer C hemical F ormula : C10H10N2O CAS No.: 9007-20-9 Dangerous Grade: Technical Data:   Nanjing Chemical Material Corp .(NCMC), honored as the president unit of Nanjing Chemical Industry Association, is reformed from original state-owned company which was founded in 1955. NCMC has been developing and focusing on chemicals for more than 60 years, and now is one of the largest professional chemical suppliers in Jiangsu province, with the privilege authorized by China government for operation of hazardous chemicals, highly toxic chemicals, precursor and explosive chemicals. Taking "APPLICATION DEVELOPMENT" as the core mission, NCMC provides customers professional chemical services with an integrated portfolio including manufacturing, R&D, trading, storage and logistic. The product range includes basic chemicals, inorganic chemicals, intermediates, functional chemicals, specialty and custom-made chemicals, covering tot...

CAS: 53956-04-0 Name: Monoammonium Glycyrrhizinate   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.   Glycyrrhizic acid 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 extr...

DMC catalyst is a new type of high-performance catalytic olefin oxide ring-opening polymerization catalyst, suitable for synthesis of olefin oxide polyether containing 1-6 functional groups. DMC catalyst manufacturers usually use low molecular weight organic complexing agents. The complexing agents beneficially affect the activity of the catalyst for epoxide polymerization. The production of polyether with DMC catalyst has the following advantages: Low production and running costs 1) No post-processing process and faster reaction speed increase the production capacity of the device by several times. 2) No post-treatment process reduces equipment investment, unit product energy consumption and water consumption, unit product solid waste and waste water production, and improves product yield. 3) It can produce higher molecular weight products with molecular weight of more than 2000 per mole of hydroxyl group. 4) The produced polyether has the characteristics of narrow molecular weigh...

Monoammonium glycyrrhizinate  in China is a chemical substance. This product is mainly used for the treatment of chronic persistent hepatitis, chronic active hepatitis, liver poisoning, and early liver cirrhosis. Production method It is obtained by using crude glycyrrhizic acid (content about 50%, weight method) as raw material and acidic ethanol as extractant. 50g crude glycyrrhizic acid was added to 170ml of 95% ethanol acidified with hydrochloric acid (Ph value 3.5 ～ 4.0), and stirred and extracted at 40 ～ 50 ℃ for 4h. After filtration, the filter residue was extracted with 100 ml of ethanol under the same conditions for 3 hours. The extracts were combined, and ammonia water or ammonia gas was added dropwise with stirring to make the Ph of the solution 7.2 to 7.5, and allowed to stand at room temperature for 0.5 h to completely precipitate. The precipitate is triammonium glycyrrhizinate, which is dispersed into a paste with an appropriate amount of glacial acetic acid...