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Background Furan resin self-hardening sand is very hard and easy to control, and the dimensional accuracy of castings is high. Therefore, the self-hardening resin sand process has been used to cast various metal castings, such as machine tools for machining and gas turbines for shipbuilding. Cast iron parts can be produced by self-hardening resin sand process. Today, the rapidly developing computer automation control technology accelerates the development and application of the self-hardening...
![1-Benzocyclobutenecarboxylic acid/Bicyclo[4.2.0]octa-1,3,5-triene-7-carboxylic acid](http://bsg-i.nbxc.com/company/3e/1236d4d50580bedd7ff70186d07763.jpg@4e_360w_360h.src)
1-Benzocyclobutenecarboxylic acid is a white solid that is sparingly soluble in water. It is mainly used as a building block in organic synthesis, particularly in the synthesis of other aromatic compounds. It can undergo various reactions, such as esterification, amidation, and decarboxylation, to form different derivatives. The compound is not commonly found in nature and is primarily synthesized in the laboratory. It has a unique structure and properties that make it useful in the development...
Shanghai Hengdailao Trading Co., Ltd. is mainly engaged in the research and development and sales of laboratory equipment, immunology, molecular biology and conventional biochemical reagents. And agent sales of many well-known foreign brands, is committed to providing first-class scientific research reagents and perfect technical services for the vast number of universities, research institutes and enterprises.chemical raw material, Welcome to inquire. Cas number 112-05-0 MDL number:...
[ China Pharmaceutical Network Technology News ] At present, 3D printing has a wide range of applications. Cronin said: "Our approach will save the production efficiency of drugs that are in short supply, difficult to manufacture in the factory, and allow for a highly customized manufacturing approach." This also allows adjustments to be made in the commodity market with small, difficult to access The indispensable supply of medicines will enable more resources in remote areas. In the near...
English name: 2-Naphthylamine-1-sulfonic acid; 2-Amino-1-naphthalenesulfonic acid; Tobias acid Other names: Tobias acid; 2-aminonaphthalene-1-sulfonic acid; 2-amino-1-naphthalenesulfonic acid; debias acid; tonic acid CAS number: 81-16-3 C10H9NO3S = 223.25 Level: AR Content: ≥98.0% Residue on ignition: ≤0.1% Properties: The crystals in hot water are colorless transparent flake crystals, and the crystals in cold water are white needle-shaped water-containing crystals. It is soluble in hot water,...
1. Why is phosphoric acid used as a curing agent for high-nitrogen furan self-hardening resins, and rarely as a curing agent for low-nitrogen furan self-hardening resins? This is because the low-nitrogen sterol resin, when using an acid as a curing agent, has a slow curing rate, a long demolding time, and a low strength. The high nitrogen low sterol resin uses phosphoric acid as a curing agent to obtain the necessary hardening speed. Moreover, the high nitrogen low sterol resin uses phosphoric...
A series of progress in fatty acid and derivatives research Fatty acids and their derivatives have broad application prospects in industrial fields such as energy, chemicals, and materials. Recently, the researcher of the salty desert of the bio-based chemical team of the Qingdao Institute of Bioenergy and Processes, Chinese Academy of Sciences, etc. conducted a series of studies on the preparation of fatty acids and their derivatives (fatty alcohols, hydroxy fatty acids, etc.) by biological...
The application results of the carboxymethyl chitosan quaternary ammonium salt developed by the Institute of Coastal Research of Yantai, Chinese Academy of Sciences as a hygroscopic moisturizer have recently been authorized by the national invention patent. The patent utilizes the principle of active superposition and the method of substructure connection to insert the carboxymethyl group and the quaternary ammonium salt at the same time into the chitosan to improve the hygroscopicity and...
2-Naphthylamine-1-sulfonic acid is primarily used in the manufacturing of dyes and pigments. It is often used as an intermediate in the synthesis of various azo dyes, acid dyes, and direct dyes. The sulfonic acid group (-SO3H) in the molecule allows for water solubility and enhances the dyeing properties of the final products. English name: 2-Naphthylamine-1-sulfonic acid; 2-Amino-1-naphthalenesulfonic acid; Tobias acid Other names: Tobias acid; 2-aminonaphthalene-1-sulfonic acid;...
Optical limiting material, mechanism and development history Recently, the research team of the Institute of Optics and Fine Mechanics, Shanghai Institute of Optics and Fine Mechanics, Wang Jun, and East China University of Science and Technology, Prof. Chen Hao, published a long review article by the author of the joint news report. Graphene and its derivatives for laser protection The journal "Progress in Materials Science" is accepted. With the development of laser technology, laser...
LyondellBasell is a multinational chemical company that produces a wide range of products, including BDO (1,4-Butanediol) and its derivatives. BDO is a versatile chemical intermediate used in various applications, such as the production of plastics, polyurethanes, solvents, and fibers. LyondellBasell is one of the leading global producers of BDO and its derivatives. They offer a range of BDO-based products, including: 1. Tetrahydrofuran (THF): THF is a solvent used in various industries,...
(Sodium pyrophosphate extraction - potassium dichromate oxidation colorimetric method, this method is for reference only) one. Reagent configuration: 1: concentrated sulfuric acid: (analytical purity 98%). 2: 0.8mol/L 1/6 potassium dichromate solution preparation: Potassium dichromate 40g dissolved in one liter of water. 3: Preparation of sodium pyrophosphate extract: 15 g of sodium pyrophosphate and 7 g of sodium hydroxide are dissolved in one liter of water. 4: 0.5% - C standard solution...
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