Thymolphthaleine Blue Solution – 125ml Packs

Thymolphthaleine Blue Solution is an acid–base indicator solution containing thymolphthalein, which becomes blue in an alkaline pH range and colourless in less alkaline media. It is supplied as a laboratory product for educational and analytical work where the specified method is appropriate. Correct identification of the active components, concentration and solvent system is particularly important for reproducibility and safe handling. The reagent should be selected according to the intended experiment rather than assumed suitable for every analytical technique. Measured aliquots, suitable controls and good laboratory practice help distinguish genuine chemical responses from interference or contamination. Where a mixture has no single chemical formula or formula mass, the constituent identity is indicated instead of a fictitious whole-mixture value. The container label and current safety guidance should be consulted before use in schools, colleges, universities or research laboratories.

Product Specifications

Specification	Details
Appearance	Colourless transparent liquid
Assay	99%
Chemical Name	Thymolphthalein indicator solution
Alternate Names	Thymolphthalein blue indicator; thymolphthalein solution
Molecular Formula	C₂₈H₃₀O₄ (indicator dye)
Empirical Formula	C₁₄H₁₅O₂ (indicator dye)
CAS Number	125-20-2 (indicator)
Molecular Weight	430.54 g/mol (indicator)
Grade	LR Laboratory Reagent

Key Features of Thymolphthaleine Blue Solution

• Thymolphthalein changes from colourless to blue in alkaline conditions
• Transition occurs approximately over pH 9.3–10.5
• Supports visible demonstrations of pH response
• Organic solvent content depends on formulation
• Indicator choice must fit the titration endpoint

Laboratory Applications of Thymolphthaleine Blue Solution

• Demonstrating basic pH indicator transitions
• Acid–base titrations with suitable endpoint ranges
• Comparing indicators in alkaline buffers
• Educational investigations of indicator equilibria
• Training in colour-based endpoint recognition

Why Choose Lab Wale to Buy Thymolphthaleine Blue Solution

Lab Wale provides Thymolphthaleine Blue Solution as part of its laboratory chemical and scientific supply range for teaching institutions and research facilities. Product selection should take account of the indicated reagent identity, concentration, analytical method, and packaging requirements. For sensitive laboratory work, users should confirm any manufacturer-specific formulation details and review available technical and safety documentation. The appropriate product is one whose composition and grade match the intended experiment, not simply one with a similar name.

Frequently Asked Questions About Thymolphthaleine Blue Solution

What is Thymolphthaleine Blue Solution used for in a laboratory?

This product is mainly considered for demonstrating basic ph indicator transitions, as well as related demonstrations or methods that call for its identified chemical components. Its use must remain within the documented reagent strength and validated procedure, especially in quantitative work.

What pH range does thymolphthalein indicate?

Its commonly reported transition is about pH 9.3–10.5, with a colourless-to-blue change. The observed transition depends on solvent and experimental conditions. For reliable observations, compare against appropriate reference controls and use the method-specified timing and conditions.

Does Thymolphthaleine Blue Solution have one CAS number and molecular weight?

The relevant identifier is 125-20-2 (indicator), and the formula information is C₂₈H₃₀O₄ (indicator dye). For a formulated solution or mixture, a single whole-product molecular weight is not meaningful; ingredient identities and actual concentration should be checked separately.

Can Thymolphthaleine Blue Solution be used in schools and research laboratories?

It may be appropriate in school, college, or research settings when the named procedure, required concentration and safety controls match the product. Hazardous reagents require trained supervision, suitable equipment and compliance with institutional chemical-handling policies.

How should Thymolphthaleine Blue Solution be stored and handled?

Store closed and protected from excess heat and light according to solvent formulation. Alcohol-based preparations require flammable-liquid precautions. Wear laboratory gloves and goggles, prevent splashes and provide ventilation for volatile solvents. Avoid igni Follow the current product safety data sheet and local hazardous-waste procedures.

Storage Conditions for Thymolphthaleine Blue Solution

Store closed and protected from excess heat and light according to solvent formulation. Alcohol-based preparations require flammable-liquid precautions. Keep clearly labelled and inspect the container regularly for leakage or change in appearance.

Precautions for Handling Thymolphthaleine Blue Solution

Read the current Safety Data Sheet (SDS) before use. Wear laboratory gloves and goggles, prevent splashes and provide ventilation for volatile solvents. Avoid ignition sources where alcohol is present and follow the supplied SDS. Maintain competent supervision in educational laboratories, suitable chemical segregation and properly documented waste disposal.