Thymol blue, pure indicator

Supplier: Thermo Scientific

Synonyms: Thymolsulphonphthalein, 3,3-Bis(4-hydroxy-5-isopropyl-2-methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide

151450250 151450050 151451000
ACRO151450250EA 192 GBP
ACRO151450250 ACRO151450050 ACRO151451000
Thymol blue, pure indicator
Thymol blue
Formula: C₂₇H₃₀O₅S
MW: 466,6 g/mol
Melting Pt: 221 °C (dec.)
Storage Temperature: Ambient
MDL Number: MFCD00005869
CAS Number: 76-61-9
EINECS: 200-973-3
Merck Index: 12,09541

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Specification Test Results

Appearance Dark green to dark brown Crystalline powder
Infrared spectrum Conforms
Solubility (0.1 % in ethanol) Clear
Specific extinction E (1%/1cm) ≥700 (596 nm, in 0.01 N NaOH)
Visual transition interval from pH 8.0 (yellow) to pH 9.6 (blue)

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