Abdelghani, Jafar I.; Al-Degs, Yahya S.; Issa, Ayman A. published the article 《Rapid and reliable chromatograhic method to monitor coloring agents in highly consumed beverages》. Keywords: beverage coloring agent chromatograhic method.They researched the compound: Sodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonate( cas:25956-17-6 ).Computed Properties of C18H14N2Na2O8S2. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:25956-17-6) here.
Monitoring food additives including coloring agents is an essential task to estimate the daily intake and exposure assessment toward consumers. A reliable liquid chromatog. procedure was developed to simultaneously monitor six common food dyes (belongs to Group-III additives) in highly consumed powd. soft drinks. The dyes were detected down to 0.23-0.72 mg/L within 15 min. Two popular brands were assayed due to their high consumption rates as confirmed from the initial food consumption questionnaire. In most cases, no pre-concentration step was needed as the level of dyes was high enough to be detected. However, a pre-concentration step was needed for “”brilliant blue”” as it was added to give the natural mint shade. In a few samples, a serious violation for permissible limit was observed Among the studied dyes, sunset yellow was extensively added as the value of 1,054 mg/kg was found. The usage pattern of dyes indicated that only 8% of items containing one dye while 70% containing two or three dyes which is necessary to get the appealing shades. The proposed method could be operated for dyes detection in low-fat foodstuffs. Practical applications : A reliable liquid chromatog. method was developed to monitor six food dyes in highly consumed powd. soft drinks with detection limit down to 0.23-0.72 mg/L in 15 min. Usage pattern of dyes indicated that 8% of items containing one dye and 70% containing two or three dyes.
As far as I know, this compound(25956-17-6)Computed Properties of C18H14N2Na2O8S2 can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.
Reference:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics