Phenolphthalein Powder- 250gm Packs

Phenolphthalein Powder is a laboratory material described as a phthalein-class organic acid-base indicator. It is colourless in acidic or near-neutral solutions and becomes pink over a mildly alkaline pH interval. The material is listed in a 250gm packs pack size for laboratory purchasing and inventory identification; pack quantity does not establish chemical purity or suitability for a specific method. In educational and analytical work, the relevant chemical properties help determine appropriate experiments, preparation conditions, and safe handling practices. Its behavior should be evaluated with the actual supplied grade, composition, and product-specific safety information in mind. Students, technicians, and researchers should use defined procedures when preparing solutions, measuring samples, or performing controlled demonstrations. Where composition, hydrate state, molecular-weight distribution, or solvent compatibility varies by manufacturer, verify the exact supplied product before using quantitative calculations or relying on method-specific performance.

Product Specifications

Specification	Details
Appearance	White to pale yellow crystalline powder
Assay	99%
Chemical Name	Phenolphthalein Powder
Alternate Names	Phenolphthalein; 3,3-bis(4-hydroxyphenyl)phthalide
Molecular Formula	C20H14O4
Empirical Formula	C10H7O2
CAS Number	77-09-8
Molecular Weight	318.33 g/mol
Grade	LR Laboratory Reagent

Key Features of Phenolphthalein Powder

• Phenolphthalein Powder is identified for laboratory use as a phthalein-class organic acid-base indicator.
• It is colourless in acidic or near-neutral solutions and becomes pink over a mildly alkaline pH interval.
• Pack configuration: 250gm Packs; use the full product label to distinguish it from other catalogue sizes.
• Listed chemical form and composition: C20H14O4.
• Suitable only for methods that accept the verified product form, grade, concentration and associated safety constraints.

Laboratory Applications of Phenolphthalein Powder

• Indicator preparation for suitable acid-base titrations
• Teaching endpoint detection for weak-acid versus strong-base titrations
• Comparison of indicator transition intervals with buffer pH
• Classroom demonstrations of reversible indicator color changes
• Colorimetric investigations using controlled alkaline solutions

Why Choose Lab Wale to Buy Phenolphthalein Powder

Lab Wale offers Phenolphthalein Powder as part of a catalogue intended for educational institutions, laboratories, and research purchasers. Clear chemical identification, pack information, and the correct reagent grade help teams choose materials for experiments and routine laboratory preparation. Before ordering, compare the intended protocol with the actual formulation, available product details, and safety documentation. Where hydrate state or composition is not identified by the catalogue name, confirm the supplied variant before performing formula-based calculations or selecting specialized analytical methods.

Frequently Asked Questions About Phenolphthalein Powder

What is Phenolphthalein Powder used for in laboratories?

Phenolphthalein Powder is used where its phthalein-class organic acid-base indicator properties are relevant. Examples include indicator preparation for suitable acid-base titrations and teaching endpoint detection for weak-acid versus strong-base titrations. Only use it where the supplied grade and form meet the experimental or analytical method requirements.

What chemical formula and molecular weight apply to Phenolphthalein Powder?

The formula information for this listing is C20H14O4; the molecular-weight information is 318.33 g/mol. For mixtures, polymers and hydrate-dependent products, a single value may not be meaningful without confirming the actual composition.

How should Phenolphthalein Powder be selected for a laboratory method?

Check the exact chemical identity, concentration or hydration state where relevant, pack size, method compatibility, and current safety information. A nominal LR designation alone does not demonstrate that a material meets the criteria for a particular quantitative or specialized test.

What is an important property of Phenolphthalein Powder?

It is colourless in acidic or near-neutral solutions and becomes pink over a mildly alkaline pH interval. This behavior helps explain why the substance may be selected for particular laboratory investigations, and also why controls or precautions may be required during preparation, handling and storage.

How should Phenolphthalein Powder be stored and handled?

Store tightly closed in a dry, cool location away from excess light, heat and incompatible oxidizers. If prepared in alcohol, store solutions under the solvent-specific flammable-liquid controls. Phenolphthalein has serious suspected carcinogenic hazards; prevent dust exposure and skin contact. Use gloves, eye protection and an appropriate ventilated workspace. Handle any alcoholic indicator solution as flammable. Read the current product-specific SDS and apply institutional procedures before use.

Storage Conditions for Phenolphthalein Powder

Store tightly closed in a dry, cool location away from excess light, heat and incompatible oxidizers. If prepared in alcohol, store solutions under the solvent-specific flammable-liquid controls. Confirm any additional controls from the current SDS and packaging instructions. Store separately from incompatible substances as required by laboratory chemical segregation policies.

Precautions for Handling Phenolphthalein Powder

Review the current Safety Data Sheet before opening the container. Phenolphthalein has serious suspected carcinogenic hazards; prevent dust exposure and skin contact. Use gloves, eye protection and an appropriate ventilated workspace. Handle any alcoholic indicator solution as flammable. Use appropriate laboratory attire and prevent unnecessary exposure. Follow applicable procedures for spills, incident reporting, and disposal; do not discharge residues into drains unless expressly permitted.