Product Description: Phenol Red Indicator

Phenol Red Indicator, also known as Phenol Red or Phenolsulfonphthalein (PSP), is a widely used pH indicator dye for laboratory, biological, microbiological, and analytical applications. With the chemical formula C₁₉H₁₄O₅S, CAS Number 143-74-8, and molecular weight 354.38 g/mol, Phenol Red is valued for its clear and noticeable color transition across a useful pH range.

Phenol Red is commonly used in cell culture media, microbiology, biochemistry, analytical chemistry, educational laboratories, and water quality testing. It helps researchers and laboratory professionals monitor changes in acidity and alkalinity by producing distinct color changes according to the pH of a solution. It generally appears yellow under acidic conditions, orange to red around neutral pH, and pink to violet under alkaline conditions.

Phenol Red Indicator is available in powder form and may also be prepared as an aqueous or ethanol-based indicator solution depending on the intended application. Its reliable color response makes it suitable for routine laboratory experiments, pH monitoring, educational demonstrations, and research applications.

Key Features

• Chemical Name: Phenol Red / Phenolsulfonphthalein
• Chemical Formula: C₁₉H₁₄O₅S
• CAS Number: 143-74-8
• Molecular Weight: 354.38 g/mol
• Appearance: Red to reddish-brown crystalline powder
• Solubility: Soluble in water and ethanol
• pH Transition Range: 6.8–8.4
• Weight: 25gm
• Brand: Loba / Merck / Researchlab
• Country of Origin: India

Color Change of Phenol Red

Phenol Red provides a visible indication of pH changes:

• Below pH 6.8: Yellow
• Around neutral pH: Orange to red
• Above pH 8.4: Pink to violet

This noticeable transition makes Phenol Red useful when quick visual identification of pH changes is required.

Applications

Cell Culture Media:
Phenol Red is commonly incorporated into cell culture media as a visual pH indicator. It helps researchers observe changes in the acidity or alkalinity of culture media during laboratory work.

Microbiology & Biochemistry:
It can be used in microbiological and biochemical experiments where monitoring pH changes is important. It is also useful in selected microbial and biochemical testing procedures.

Analytical Chemistry:
Phenol Red can be used as an indicator in acid-base experiments and laboratory analysis where its characteristic color transition is suitable.

Educational Laboratories:
It is widely useful for chemistry demonstrations and practical experiments involving acids, bases, and pH measurement.

Water and Environmental Testing:
Phenol Red may also be used in selected water, soil, and biochemical testing applications where visual pH indication is required.

Safety & Handling

Phenol Red should be handled according to standard laboratory safety practices. Avoid unnecessary inhalation, ingestion, or direct contact with the material. Appropriate laboratory personal protective equipment should be used during handling. Store the product in a tightly closed container in a cool, dry place, away from direct sunlight and incompatible materials.

Why Choose Phenol Red Indicator?

• Clear and noticeable pH color transition
• Suitable for laboratory and research applications
• Useful in microbiology and cell culture
• Applicable to analytical and educational experiments
• Available in convenient 25gm laboratory packaging
• Offered from recognized brands including Loba, Merck, and Researchlab

Price in Bangladesh

Phenol Red Indicator 25gm is available in Bangladesh for laboratory, research, educational, pharmaceutical, and institutional applications. Pricing may vary depending on brand, availability, and order quantity. Bulk and institutional orders may be eligible for competitive pricing.

Where to Buy Phenol Red Indicator in Bangladesh?

Phenol Red Indicator can be purchased from laboratory chemical suppliers and scientific equipment distributors in Bangladesh. M/S Bright Scientific Co. supplies laboratory chemicals and scientific products to research laboratories, pharmaceutical companies, educational institutions, diagnostic centers, and other organizations across Bangladesh.

Why Buy from M/S Bright Scientific Co.?

• Trusted Laboratory Supplier: Serving laboratories, pharmaceutical companies, research organizations, and educational institutions.
• Competitive Pricing: Attractive pricing for laboratory and institutional requirements.
• Reliable Delivery: Delivery support across Bangladesh.
• Quality Products: Laboratory chemicals and scientific products from established brands.
• Institutional Support: Suitable for regular laboratory and bulk procurement requirements.

Frequently Asked Questions (FAQ)

1. What is Phenol Red Indicator?
Phenol Red is a pH indicator dye, also known as Phenolsulfonphthalein, used to detect changes in the acidity or alkalinity of a solution.

2. What is the CAS Number of Phenol Red?
The CAS Number of Phenol Red is 143-74-8.

3. What is the molecular formula of Phenol Red?
The molecular formula is C₁₉H₁₄O₅S.

4. What is the molecular weight of Phenol Red?
Its molecular weight is 354.38 g/mol.

5. What is the pH range of Phenol Red?
Phenol Red has a typical pH transition range of approximately 6.8–8.4.

6. What color does Phenol Red show in acidic conditions?
Below approximately pH 6.8, Phenol Red generally appears yellow.

7. What is the available pack size?
This product is available in a 25gm pack.

8. Which brands are available?
Phenol Red Indicator is available from Loba, Merck, and Researchlab, subject to stock availability.

9. Where can I buy Phenol Red Indicator in Bangladesh?
You can contact M/S Bright Scientific Co. for product availability, pricing, and delivery information.

Contact Information

M/S Bright Scientific Co.
📞 Phone: 01711285976