36018

Fehling′s reagent I for sugars

reag. Ph. Eur., for determination of sugar, solution I: copper(II) sulfate

• 동의어(들): Copper(II) sulfate solution, Cupric sulfate solution acc. to Fehling, Cupric sulfate standard
• CAS Number: 7758-99-8
• MDL number: MFCD00010981
• UNSPSC 코드: 12164500
• PubChem Substance ID: 329755253
• NACRES: NA.21

속성

• Grade: for determination of sugar
• Quality Level: 100
• Agency: USP/NF; reag. Ph. Eur.
• 농도: 17.6 g/L±0.1 g/L Cu
• density: 1.038-1.060 g/mL at 20 °C
• 적합성: in accordance for application
• 응용 분야: food and beverages; general analytical; pharmaceutical (small molecule)
• SMILES string: [Cu++].[O-]S([O-])(=O)=O
• InChI: 1S/Cu.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2
• InChI key: ARUVKPQLZAKDPS-UHFFFAOYSA-L

설명

일반 설명

The principle behind Fehling′ test is basically based on the reducing property of monosaccharide and disaccharides, which in turn depends on the presence of free keto or an aldehyde group. This test is performed by adding a few drops of sugar solution to a mixture of Fehling′s A solution (i.e., CuSO₄) and Fehling′s B solution (i.e., KOH and Na-K tartarate). Fehling′s solution gets reduced by aldose sugars to insoluble yellow or red colored cuprous oxide. Monosaccharides like glucose, galactose and fructose and disaccharides like lactose and maltose resond freely to Fehling′s test as they possess a free keto or an aldehyde group, whereas sucrose fails to answer the test as it does not possess a free aldehyde or an keto group. Hence, Fehling′s test is also used to distinguish reducing discaccharides like maltose from non-reducing sugars like sucrose.

안전성 정보

• 픽토그램: GHS09
• 신호어: Warning
• 유해 및 위험 성명서: H410
• 예방조치 성명서: P273 - P391 - P501
• Hazard Classifications: Aquatic Acute 1 - Aquatic Chronic 2
• Storage Class Code: 12 - Non Combustible Liquids
• WGK: WGK 3
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable