1.08176

Thymol blue

pH indicator, ACS, Reag. Ph Eur

• Synonyme(s) : Thymol blue, Thymolsulfonphthalein
• Formule empirique (notation de Hill): C₂₇H₃₀O₅S
• Numéro CAS: 76-61-9
• Poids moléculaire : 466.59
• Numéro MDL: MFCD00005869
• Code UNSPSC : 12171502
• Numéro de classement CE : 200-973-3
• Nomenclature NACRES : NB.21

Propriétés

• product name: Thymol blue, indicator ACS, Reag. Ph Eur
• Qualité: ACS reagent
• Niveau de qualité: 200
• Agence: reag. Ph. Eur.
• Forme: solid
• Perte: ≤3% loss on drying, 110°C
• visual transition interval: 1.2-2.8, red-violet to brownish-yellow(1st transition range); 7.8-9.5, greenish yellow to blue(2nd transition range)
• Pf: 221 °C (decomposition)
• Masse volumique apparente: 350 kg/m³
• Température de stockage: 15-25°C
• InChI: 1S/C27H30O5S/c1-15(2)19-13-22(17(5)11-24(19)28)27(21-9-7-8-10-26(21)33(30,31)32-27)23-14-20(16(3)4)25(29)12-18(23)6/h7-16,28-29H,1-6H3
• Clé InChI: PRZSXZWFJHEZBJ-UHFFFAOYSA-N

Description

Application

• Adsorption of Thymol Blue dye from Aqueous solution using modified Chitosan.: This study explores the adsorption of Thymol Blue using chemically modified chitosan. Key parameters such as optimal time, pH, concentration, and dose were investigated, revealing that the adsorption process follows second-order kinetics (Elsawy et al., 2023).


• Electroorganic synthesis: bromination of thymol blue and phenol red.: This research details the electroorganic bromination of Thymol Blue, resulting in pH-sensitive products. The study provides experimental methods suitable for educational settings, emphasizing the ease of identifying brominated products (Ducci, 2023).


• Spectrophotometric Determination of Isopropamide Iodide based on Ion-pair Complex Formation with Thymol Blue.: This paper presents a spectrophotometric method for determining isopropamide iodide by forming an ion-pair complex with Thymol Blue, highlighting its application in analytical chemistry (Singh et al., 2020).


• A comparative photocatalytic degradation study of Thymol blue dye over pristine ZnO and Er-doped ZnO.: This study compares the photocatalytic degradation efficiency of Thymol Blue dye using ZnO and Er-doped ZnO, indicating the superior performance of the doped variant (Sharma et al., 2024).

Remarque sur l'analyse

1st transition range: pH 1.2 - pH 2.8 violet red - brownish yellow
2nd transition range: pH 7.8 - pH 9.5 greenish yellow - blue
Appearance of solution: passes test
Loss on drying (110 °C): ≤ 3
Transition range (according to ACS): passes test
Sensitivity test: passes test

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable