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Key Documents

1.08176

Supelco

Thymol blue

pH indicator, ACS, Reag. Ph Eur

Synonym(s):

Thymol blue, Thymolsulfonphthalein

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About This Item

Empirical Formula (Hill Notation):
C27H30O5S
CAS Number:
Molecular Weight:
466.59
MDL number:
UNSPSC Code:
12171502
EC Index Number:
200-973-3
NACRES:
NB.21

product name

Thymol blue, indicator ACS, Reag. Ph Eur

grade

ACS reagent

Quality Level

agency

reag. Ph. Eur.

form

solid

loss

≤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)

mp

221 °C (decomposition)

bulk density

350 kg/m3

storage temp.

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

InChI key

PRZSXZWFJHEZBJ-UHFFFAOYSA-N

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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).

Analysis Note

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

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

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