The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate( cas:25956-17-6 ) is researched.Synthetic Route of C18H14N2Na2O8S2.Hidalgo, Asuncion Maria; Leon, Gerardo; Gomez, Maria; Murcia, Maria Dolores; Gomez, Elisa; Macario, Jose Antonio published the article 《Removal of different dye solutions: a comparison study using a polyamide NF membrane》 about this compound( cas:25956-17-6 ) in Membranes (Basel, Switzerland). Keywords: acid brown sunset yellow polyamide nanofiltration wastewater treatment; characterization; dyes; molecular structure; nanofiltration; physico-chemical properties. Let’s learn more about this compound (cas:25956-17-6).
The removal of organic dyes in aquatic media is, nowadays, a very pressing environmental problem. These dyes usually come from industries, such as textiles, food, and pharmaceuticals, among others, and their harm is produced by preventing the penetration of solar radiation in the aquatic medium, which leads to a great reduction in the process of photosynthesis, therefore damaging the aquatic ecosystems. The feasibility of implementing a process of nanofiltration in the purification treatment of an aqueous stream with small size dyes has been studied. Six dyes were chosen: Acid Brown-83, Allura Red, Basic Fuchsin, Crystal Violet, Methyl orange and Sunset Yellow, with similar mol. volume (from 250 to 380 Å). The nanofiltration membrane NF99 was selected. Five of these mols. with different sizes, shapes and charges were employed in order to study the behavior of the membrane for two system characteristic parameters: permeate flux and rejection coefficient Furthermore, a microscopy study and a behavior anal. of the membrane were carried out after using the largest mol. Finally, the Spiegler-Kedem-Katchalsky model was applied to simulate the behavior of the membrane on the elimination of this group of dyes.
Although many compounds look similar to this compound(25956-17-6)Synthetic Route of C18H14N2Na2O8S2, numerous studies have shown that this compound(SMILES:O=S(C1=CC=C2C(/N=N/C3=CC(C)=C(S(=O)([O-])=O)C=C3OC)=C(O)C=CC2=C1)([O-])=O.[Na+].[Na+]), has unique advantages. If you want to know more about similar compounds, you can read my other articles.
Reference:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics