CAS NO 123-76-2 4-oxopentanoic acid

CAS NO 123-76-2 4-oxopentanoic acid

1 cotton seed or corncob aldehyde after the residue (furfural residue) or waste taro residue with dilute acid hydrolysis can be prepared levulinic acid. The sugar aldehyde residue was added to 10% dilute hydrochloric acid, the solidification solution was 1: 1.75, into the hydrolysis pot after mixing, steaming 0.2MPa pressure steam 8-10h. Then the diluted solution was filtered; concentrated to a concentration of about 50%. Then vacuum distillation, collecting 130 ℃ (2.67kPa) distillate above the finished product. Consumption of raw materials fixed: taro hit 7000kg / t; hydrochloric acid (off 100%) 1800kg / t. Another method of production from sugar alcohol by rearrangement; hydrolysis obtained. The 4% hydrochloric acid solution was added to the reaction kettle, heated to 97-100 ° C with stirring, and a mixture of furfuryl alcohol, ethanol and water was slowly added. Add Bi, and then stirred for 30min. Filtration, the filtrate was concentrated at 80 ° C (21.3kPa) under reduced pressure to give the crude levulinic acid solution. Then vacuum distillation, collecting 160-170 ° C (2.67kPa) distillate, and then re-distilled again levulinic acid was obtained in about 75% yield.
2. Tobacco: FC, 50; BU, 26.
This product is mainly used as raw material for making resin, medicine, perfume and coating. In the pharmaceutical industry, its calcium salt can be made into intravenous injection and indomethacin. Its lower esters are used as flavors and tobacco flavors. Diphenolic acid made with this product can produce water-soluble resin, used in the paper industry to produce filter paper. Can also be used to make pesticides, dyes and surfactants. Also used as aromatics extractant.

Product expansion
1> Cosmetic Raw Materials: Cosmetics is a variety of raw materials through a reasonable deployment of processing from the compound mixture. Cosmetics with a wide range of raw materials, different performance. According to the raw material properties and uses of cosmetics, can be divided into matrix materials and auxiliary raw materials in two categories. The former is a class of cosmetics in the main raw materials, cosmetics in the possession of a large proportion of the cosmetics play a major role in the role of the material. The latter is the formation of cosmetics, stability or to give color, smell and other characteristics of the role of these substances in the cosmetic formula is not used, but it is extremely important. Cosmetics are natural, synthetic or extracted from the role of different substances as raw materials, by heating, mixing and emulsification and other production processes processed from the chemical mixture.
2> Active Pharmaceutical Ingredients(API): API refers to the raw materials in the production of various types of preparations, which is the active ingredient in powder,crystal and paste for medicine use through chemical synthesis,plant extract, and preparations of biotechnology institute.It is one substance or mixture during the medicine making period, it can not be taken directly by patients.
3> Fragrance And Spices: Spice is a substance that can be scented by smelling or scented by taste, and is the raw material for the preparation of the fragrance. Spices are an important part of fine chemicals, it is composed of natural spices, synthetic spices and single fragrance.
4> Organic Raw Material: Intermediates are also known as organic intermediates. The use of coal tar or petroleum products as raw materials to produce dyes, pesticides, pharmaceuticals, resins, additives, and other intermediates.
5> Chemicals Used In Paints: Paint, the traditional Chinese name is paint. So-called coating is coated on the surface of the object that be protected or be adornment, and with the continuous film coating to form strong adhesion, usually in resin, or oil, or emulsion is given priority to, add or not add pigment, filler, add the corresponding additives, organic solvents or water preparation of viscous liquid.