Chemwill Asia co.,Ltd is one of the leading manufacturer  in CHINA. 

Our main production base is located in Xuzhou industry park. We produce a wide range of organics including Active pharmaceutical ingredients(APIs), Veterinary,  Indole derivatives, Aromatics, Fluorine, Boronic acids, organocatalysts, chiral building blocks, heterocyclic compounds. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place. 

Our R&D team masters core technology for process-design of target building block as well as Tailor-made fine chemicals. Our manufactory specialised in extreme temperature conditions (-100ºC to +300ºC), hydrogenations reaction under high pressure, suzuki coupling reaction, photochemical reaction, Mitsunobu reactions, enantioselective reactions and asymmetric synthesis. 

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2.Credibility is the most important.

3.Quality control is our life.

4.Great sense of responsibility.

5.We will be responsible for not only our products, our clients, also the society.

The corporation's destination: we will constantly strive to supply customers with new and high-tech products and will keep the leadership in the field. 

Guanidine carbonate is an extremely widely used organic fine chemical products, mainly used in the synthesis of flame retardants, flocculants, foaming agents, sulfonamides, etc. Guanidine carbonate is also used as a synergist in synthetic detergents and as an ingredient in high-end cosmetics. There are many reports on the synthesis of guanidine carbonate in literature [1-3]. The production of guanidine carbonate in China is mainly through the melting of dicyandiamide and ammonium chloride to generate guanidine hydrochloride, then the free guanidine is generated under the action of alkali, and then the guanidine reacts with carbon dioxide to generate guanidine carbonate. This route is easy to generate impurities such as melamine and its dimer Chemicalbook and trimer when melting at high temperature, and there are Cl- and Na+ in the system, which is difficult to completely remove during purification. Even if the purity of guanidine carbonate > 99%, its ash content is still up to 0.2%, so it is difficult to obtain high purity guanidine carbonate. In this paper, aminonitrile is used as raw material to react with carbon dioxide and ammonia in one step to synthesis of guanidine carbonate, also known as the so-called ash-free guanidine carbonate. After purification, high purity Guanidine carbonate is obtained, and the reaction equation is as follows :2NH2CN+CO2+2NH3+H20→[NH2C(:NH)NH2]2H2CO3

Application

1.It is used as a precipitant in the gravimetric determination of zinc, cadmium and manganese, as well as in the separation and organic synthesis of magnesium from alkali metals.

2.Used in organic synthesis, can make antioxidant, resin stabilizer, amino resin pH regulator, etc.

3.This product is an organic synthetic raw material and analytical reagent. It is used as pH regulator, antioxidant, resin stabilizer and guanidine soap of amino resin, and also used as additive of cement slurry agent and surface active Chemicalbook agent. In the synthetic detergent, the use of moisture resistant agent and synergist. In zinc, cadmium, manganese gravimetric determination, used as a precipitant, also used for the separation of magnesium in alkali metals.