CAS 76-61-9

Thymol blue

Description:

Thymol blue is a pH indicator commonly used in various chemical applications, particularly in titrations and as a biological stain. It is a sulfonphthalein dye that exhibits a color change depending on the pH of the solution, transitioning from yellow at acidic pH levels to blue in alkaline conditions. The compound is soluble in water and alcohol, making it versatile for different experimental setups. Thymol blue has two distinct pH transition ranges, which allows it to indicate a broader spectrum of acidity and alkalinity. In addition to its role as a pH indicator, thymol blue is also utilized in microbiology and biochemistry for staining purposes due to its ability to bind to cellular components. Its chemical structure includes a phenolic group, contributing to its acidic properties. Safety considerations should be noted, as thymol blue can cause irritation upon contact with skin or eyes, and proper handling procedures should be followed in laboratory settings.

Formula: C₂₇H₃₀O₅S

InChI: 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: InChIKey=PRZSXZWFJHEZBJ-UHFFFAOYSA-N

SMILES: CC=1C(C2(C=3C(S(=O)(=O)O2)=CC=CC3)C4=CC(C(C)C)=C(O)C=C4C)=CC(C(C)C)=C(O)C1

Synonyms:

• 2-{(E)-[4-hydroxy-2-methyl-5-(1-methylethyl)phenyl][2-methyl-5-(1-methylethyl)-4-oxocyclohexa-2,5-dien-1-ylidene]methyl}benzenesulfonic acid
• 3H-2,1-Benzoxathiole, phenol deriv.
• 4,4'-(1,1-dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis[5-methyl-2-(propan-2-yl)phenol]
• 4,4′-(1,1-Dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[5-methyl-2-(1-methylethyl)phenol]
• NSC 11238
• Phenol, 4,4′-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[5-methyl-2-(1-methylethyl)-
• Phenol, 4,4′-(3H-2,1-benzoxathiol-3-ylidene)bis[5-methyl-2-(1-methylethyl)-, S,S-dioxide
• TB
• Thymol, 6,6′-(3H-2,1-benzoxathiol-3-ylidene)di-, S,S-dioxide
• Thymolsulfonephthalein
• Thymolsulfophthalein

Thymol Blue

CAS: 76-61-9

Formula: C₂₇H₃₀O₅S

Color and Shape: Yellow to Brown to Dark green powder to crystaline

Molecular weight: 466.59

Ref: 3B-T0235

Thymol Blue

CAS: 76-61-9

A sulfonphthalein dye used as a pH indicator. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed

Formula: C₂₇H₃₀O₅S

Color and Shape: Dark green or brown to black, powder

Molecular weight: 466.59

Ref: 02-B21370

Thymol Blue, ACS

CAS: 76-61-9

pH indicator: 1.2 (red) to 2.8 (yellow) to 9.6 (blue)

Formula: C₂₇H₃₀O₅S

Molecular weight: 466.59

Ref: 02-016272

Phenol, 4,​4'-​(1,​1-​dioxido-​3H-​2,​1-​benzoxathiol-​3-​ylidene)​bis[5-​methyl-​2-​(1-​methylethyl)​-

CAS: 76-61-9

Formula: C₂₇H₃₀O₅S

Color and Shape: Solid

Molecular weight: 466.5891

Ref: IN-DA00IKHD

Thymol blue

CAS: 76-61-9

Thymol blue

Purity: IND

Molecular weight: 466.59g/mol

Ref: 54-OR80646

Thymol Blue

CAS: 76-61-9

Formula: C₂₇H₃₀O₅S

Purity: ≥ 95.0%

Color and Shape: Dark green to brown or black powder

Molecular weight: 466.60

Ref: 7W-GT9755

Thymol blue

CAS: 76-61-9

pH indicator

Formula: C₂₇H₃₀O₅S

Purity: Min. 95%

Color and Shape: Red Clear Liquid

Molecular weight: 466.59 g/mol

Ref: 3D-FT01464

Thymol blue

CAS: 76-61-9

Purity: IND

Color and Shape: Solid

Molecular weight: 466.5899963

Ref: 10-F600667

Thymol Blue

CAS: 76-61-9

Formula: C₂₇H₃₀O₅S

Color and Shape: Brownish green, Powder

Molecular weight: 466.60

Ref: SR-27179

Thymol Blue ACS, ExiPlus, Multi-Compendial

CAS: 76-61-9

Formula: C₂₇H₃₀O₅S

Color and Shape: Brownish green, Powder

Molecular weight: 466.60

Ref: SR-79617