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Indicators

Thymol Blue Indicator

RA002599 CAS 76-61-9 AR

Identity

Product code
RA002599
CAS number
76-61-9
Grade
AR
Molecular formula
C27H30O5S
Molecular weight
466.60

Classification

Technical Data

Properties

PropertyValueUnit
Physical state at 20 °C Solid —
Colour Brownish green powder —
Odour Characteristic odour —
Melting point/ Freezing point [°C] 221 - 224 °C °C
Density [g/cm3] 0.979 g/cm3 g/cm3
Solubility in water [% weight] Soluble in water —

These are recorded catalogue property values. Product specification limits, where available, are listed under Specifications.

Specifications

ParameterSpecificationUnit
Appearance Dark green to dark brown powder —
Acidic range pH 1.2-2.8 Red to yellow —
Alkaline range pH 8.0-9.6 Yellow to blue —
Loss on drying Max 10 % %
Dye content (by spectrophotometry) Min 95.0 % %
Clarity of solution Passes test —

Packaging

Pack size SKU
5 g RA002599-PK-5G
25 g RA002599-PK-25G