Phenolphthalein | 77-09-8

Description :

Overview of Phenolphthalein

Phenolphthalein is a high-purity, crystalline organic compound widely recognized as a benchmark pH indicator and chemical dye intermediate. Appearing as a white to faint yellowish-white crystalline powder, it is practically insoluble in water but highly soluble in alcohols and organic solvents. It is globally valued for its sharp, reversible color transition—remaining completely colorless in acidic to neutral solutions (pH < 8.2) and turning into a vibrant pink-to-magenta hue in alkaline environments (pH > 10.0).

Because of its precise and predictable colorimetric shifting behavior, Phenolphthalein is extensively utilized across analytical laboratories, pharmaceutical testing units, educational research, and specialized dye synthesis lines. It acts as a fundamental titration reagent, a color-changing safety indicator for construction materials, and a diagnostic testing base where quick visual pH confirmation is mandatory.

At ChemicalBull Pvt. Ltd., we are recognized as the best industrial chemical distributor in India, offering an extensive portfolio of high-purity solvents and processing raw materials. Operating as a highly reputable chemical manufacturing company and a top-rated chemical vendor in Vapi, Gujarat, we cater directly to your commercial procurement demands by maintaining massive ready stock availability for immediate nationwide dispatch. Our robust quality control systems ensure that every batch of indicator compounds conforms strictly to global analytical and safety standards.

Applications of Phenolphthalein

Analytical Titrations & Chemical Testing Reagents

Phenolphthalein is standardly prepared as a liquid indicator solution for acid-base titrations across industrial quality control laboratories. Its immediate, sharp visual shift allows chemists to easily identify the exact neutralization endpoint in standard chemical assays, water treatment tests, and raw material verifications.

To streamline your laboratory testing and raw chemical procurement, chemical procurement managers frequently buy Phenolphthalein alongside these interconnected analytical reagents and laboratory essentials from our inventory:

• Liquor Ammonia AR (For serving as a high-purity alkaline standard in color-testing loops)

• Oxalic Acid (For standardizing basic titrants used in conjunction with phenolphthalein indicators)

• Caustic Soda Lye (For preparing standard alkaline solutions used to verify indicator batch metrics)

Concrete Carbonation & Construction Safety Testing

In civil engineering and commercial construction diagnostics, Phenolphthalein spray testing is deployed to check the depth of carbonation in concrete structures. Spraying the solution onto fresh core samples immediately turns non-carbonated, highly alkaline concrete bright pink, while carbonated, micro-damaged areas remain colorless, highlighting structural decay points.

Specialty Dyes, Plastics & Toy Manufacturing

The rapid, reversible color-shifting mechanism of Phenolphthalein is highly useful for formulating specialty thermo-chromic or photo-chromic dyes. It is also integrated as a safe, disappearing color element in novelty inks, specialized plastics, and temporary indicator toys.

Safety Precautions When Handling Phenolphthalein

• Health Hazard: Classified as a suspected carcinogen and mutagen—avoid any direct ingestion or continuous exposure.

• Dust Inhalation: Fine powder poses a respiratory tract hazard—always handle inside a chemical fume hood or localized dust-extraction booth.

• Skin Contact: Can cause mild skin allergies or localized irritation—wash immediately with plenty of soap and running water if exposed.

• PPE: Mandatory use of certified particulate dust masks (N95/N99), chemical-resistant laboratory gloves, and sealed safety goggles.

• Storage: Store inside tightly sealed original containers in a cool, dry, dark warehouse separated from strong oxidizing compounds.

Why to Buy Phenolphthalein from ChemicalBull?

Trusted Phenolphthalein Manufacturer & Sourcing

ChemicalBull Pvt. Ltd. is a leading manufacturer, supplier, and bulk exporter of high-grade Phenolphthalein powder in India. Our precise crystallization tracks eliminate unwanted residual heavy metals and organic impurities, delivering an ultra-pure chemical matrix (> 98% - 99%$) that guarantees sharp visual endpoints with no dragging color shifts in your sensitive testing assays.

Reliable Chemical Supplier & Distributor

As your strategic B2B chemical distribution partner in Vapi, Gujarat, we optimize your raw material procurement with guaranteed ex-stock availability and scalable packaging configurations from heavy-duty UN-approved steel drums to continuous ISO tanker logistics. Our direct-from-factory pricing combined with a frictionless domestic supply chain model ensures your facility maintains a cost-effective, uninterrupted production flow.

Phenolphthalein MSDS

The complete globally compliant Material Safety Data Sheet (MSDS) for Phenolphthalein powder is immediately available upon commercial request. It provides critical chemical regulatory data, including UN transport and hazard classifications, GHS hazard pictograms, and mandatory safe disposal and workplace exposure limits.

Frequently Asked Questions (FAQs)

1. What is the melting point and purity profile of ChemicalBull's Phenolphthalein?

   Our standard commercial Phenolphthalein powder possesses a melting point range of 258 C to 263 C and is maintained at an analytical purity level of > 98%, making it ideal for high-precision laboratory formulations.
   
   

2. How should an industrial user prepare a standard 1% Phenolphthalein indicator solution?

   Dissolve exactly 1 gram of pure Phenolphthalein powder in 50 ml of industrial-grade Ethanol or Isopropyl Alcohol, then dilute the mixture up to 100 ml using demineralized water while stirring consistently until completely clear.
   
   

3. How can I request a sample and a commercial wholesale price quote?

   You can submit your required volume, delivery timeline, and purity specifications directly to the commercial desk of ChemicalBull Pvt. Ltd. to receive a competitive price quote and a lab-evaluation sample within 24 hours.