Phenol Red Indicator- 25gm Packs

Phenol Red Indicator is a laboratory material described as a sulfonphthalein acid-base indicator dye. Its visible color transition makes it useful for monitoring pH in approximately the near-neutral to mildly alkaline range. The material is listed in a 25gm 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	Red to dark red crystalline powder
Assay	99%
Chemical Name	Phenol Red Indicator
Alternate Names	Phenolsulfonphthalein; phenol red
Molecular Formula	C19H14O5S
Empirical Formula	C19H14O5S
CAS Number	143-74-8 (free acid; confirm whether sodium salt supplied)
Molecular Weight	354.38 g/mol (free acid)
Grade	LR Laboratory Reagent

Key Features of Phenol Red Indicator

• Phenol Red Indicator is identified for laboratory use as a sulfonphthalein acid-base indicator dye.
• Its visible color transition makes it useful for monitoring pH in approximately the near-neutral to mildly alkaline range.
• Pack configuration: 25gm Packs; use the full product label to distinguish it from other catalogue sizes.
• Listed chemical form and composition: C19H14O5S.
• Suitable only for methods that accept the verified product form, grade, concentration and associated safety constraints.

Laboratory Applications of Phenol Red Indicator

• Preparation of pH indicator solutions using the specified dye form
• Acid-base color transition demonstrations in supervised teaching laboratories
• Visual monitoring of pH shifts in appropriately formulated culture media
• Comparative investigations of indicator response across buffer solutions
• Laboratory exercises on spectrophotometric behavior of pH-sensitive dyes

Why Choose Lab Wale to Buy Phenol Red Indicator

Lab Wale offers Phenol Red Indicator 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 Phenol Red Indicator

What is Phenol Red Indicator used for in laboratories?

Phenol Red Indicator is used where its sulfonphthalein acid-base indicator dye properties are relevant. Examples include preparation of ph indicator solutions using the specified dye form and acid-base color transition demonstrations in supervised teaching laboratories. Only use it where the supplied grade and form meet the experimental or analytical method requirements.

What chemical formula and molecular weight apply to Phenol Red Indicator?

The formula information for this listing is C19H14O5S; the molecular-weight information is 354.38 g/mol (free acid). For mixtures, polymers and hydrate-dependent products, a single value may not be meaningful without confirming the actual composition.

How should Phenol Red Indicator 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 Phenol Red Indicator?

Its visible color transition makes it useful for monitoring pH in approximately the near-neutral to mildly alkaline range. 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 Phenol Red Indicator be stored and handled?

Keep tightly sealed in a dry place protected from excessive light, moisture and contamination. Store solutions according to their solvent and validated shelf-life requirements. Avoid dust inhalation and contact with eyes or skin. Use eye protection, gloves, and a dust-controlled work area; examine the SDS for the exact free-acid or salt formulation. Read the current product-specific SDS and apply institutional procedures before use.

Storage Conditions for Phenol Red Indicator

Keep tightly sealed in a dry place protected from excessive light, moisture and contamination. Store solutions according to their solvent and validated shelf-life requirements. 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 Phenol Red Indicator

Review the current Safety Data Sheet before opening the container. Avoid dust inhalation and contact with eyes or skin. Use eye protection, gloves, and a dust-controlled work area; examine the SDS for the exact free-acid or salt formulation. 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.