The salt complex formed by the loss of hydrogen ions in the hydroxyl group of the sulfonic acid portion of MOPS hydrate is called MOPS semi sodium salt. The CAS number of MOPS semi sodium salt is 117961-20-3. After titration with anhydrous sulfuric acid, the purity can reach over 99%, and the UV absorbance is less than 0.05. At 20 ℃, the acidity coefficient of MOPS semi sodium salt is 7.2 and it is not sensitive to temperature. The physical state of MOPS semi sodium salt is a white crystalline powder. To obtain a 0.1M colorless and clear MOPS semi sodium salt buffer, 500g of MOPS semi sodium salt crystalline powder needs to be dissolved in 1L of deionized water. At 25 ℃, the pH value of MOPS semi sodium salt in aqueous solution is 7.0, which belongs to weak alkalinity. However, when MOPS semi sodium salt buffer is used for biochemical research, its high activity pH value range is 6.5-7.9. MOPS semi sodium salt and MOPS both belong to the morpholine family of buffering agents, containing N-substituted amino sulfonic acids with morpholine rings. They do not bind to metals, but can undergo oxidation-reduction reactions with strong acids and bases. MOPS semi sodium salt does not react with metals and enzymes, so it is often used in plant cell culture media that need metal cations and in cation exchange chromatography to adjust the pH of the solution. MOPS semi sodium salt has a very stable control over pH value, so in some experiments that are particularly sensitive to pH value, MOPS semi sodium salt is the best choice. Hubei Xindesheng Material Technology Co., Ltd. can provide you with high-quality and high-purity MOPS semi sodium salt pure white crystalline powder, suitable for general industrial use or biochemical research, but not suitable for human consumption or therapeutic use. In addition to MOPS semi sodium salt, Desheng's star buffering agents also include trihydroxymethylaminomethane TRIS, trihydroxymethylaminomethane hydrochloride TRIS-HCL, and trihydroxymethylaminomethane acetate TAE. Please feel free to inquire and purchase.