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Phenolphthalein Indicator Lab Grade (25gm)
Price :
৳800
Size :
- 25 gm
Color :
Estimated Shipping Time: Deliveries take up to 4-5 days after you place your order.
Uses: Lab Essentials
Product SKU: aXO7084ks2
Phenolphthalein হল একটি রাসায়নিক যৌগ যা সাধারণত অম্লতা বা ক্ষারত্বের রঙ পরিবর্তনের প্রতিক্রিয়ার কারণে pH সূচক হিসাবে ব্যবহৃত হয়। এটি ঘরের তাপমাত্রায় একটি সাদা বা ফ্যাকাশে হলুদ স্ফটিক পাউডার, বর্ণহীন এবং গন্ধহীন। এটি জলে দ্রবণীয় তবে অ্যালকোহল এবং জৈব দ্রাবকগুলিতে সহজেই দ্রবীভূত হয়। পিএইচ আরও ক্ষারীয় হয়ে উঠলে এর দ্রবণীয়তা বৃদ্ধি পায়। পিএইচ পরিবর্তনের প্রতি ফেনোলফথালিনের সংবেদনশীলতা এটিকে টাইট্রেশন এবং পরীক্ষায় উপযোগী করে তোলে যেখানে সুনির্দিষ্ট শেষ বিন্দুর প্রয়োজন হয়। এটি সাধারণত 8.2 থেকে 10.0 এর pH পরিসরে ব্যবহৃত হয়, এটিকে অ্যাসিড-বেস টাইট্রেশন এবং রাসায়নিক বিশ্লেষণের জন্য দরকারী করে তোলে। এটি রসায়ন শ্রেণীকক্ষে পিএইচ এবং টাইট্রেশন নীতিগুলি প্রদর্শন করতে শিক্ষাগত সেটিংসেও ব্যবহৃত হয়। খাদ্য এবং ফার্মাসিউটিক্যালসের মতো শিল্পে, ফেনোলফথালিন উত্পাদন প্রক্রিয়া চলাকালীন পিএইচ মাত্রা নিরীক্ষণ এবং নিয়ন্ত্রণ করতে ব্যবহার করা যেতে পারে।
Product Description
Phenolphthalein is often used as a pH indicator due to its ability to undergo a color change in response to variations in acidity or alkalinity. Phenolphthalein is a white or pale yellow crystalline powder at room temperature. In its pure form, it is colorless and practically odorless. Phenolphthalein is sparingly soluble in water but dissolves readily in alcohols and other organic solvents. Its solubility in aqueous solutions increases as the pH becomes more alkaline. One of the most notable features of phenolphthalein is its sensitivity to pH changes. In acidic solutions (pH below 8.2), it remains colorless. However, in alkaline or basic solutions (pH above 8.2), it undergoes a distinct color change, turning vibrant pink to magenta. Phenolphthalein is commonly used in a pH range of 8.2 to 10.0, making it particularly useful for titrations and experiments where the endpoint of a reaction needs to be precisely determined.
Applications:
- Acid-Base Titrations: Phenolphthalein is frequently employed as an indicator in acid-base titrations. Its sharp and easily detectable color change makes it valuable in determining the endpoint of the reaction.
Laboratory Use: It is a staple in laboratories for its reliability and accuracy in indicating pH changes. Scientists and researchers use it in various chemical analyses.
Education: Phenolphthalein is commonly used in educational settings to demonstrate the concept of pH and the principles of titration in chemistry classrooms.
Quality Control: In industries such as food and pharmaceuticals, phenolphthalein can be used as an indicator to monitor and control the pH levels during production processes.
Phenolphthalein is a commonly used chemical indicator in laboratories, especially in acid-base titrations. Here are 10 key points related to Phenolphthalein indicator in a laboratory setting:
Chemical Structure: Phenolphthalein is a synthetic compound with the chemical formula C20H14O4. It is often used as a pH indicator due to its ability to undergo a color change in different pH ranges.
Color Change Range: In acidic solutions, phenolphthalein is colorless, but it turns pink or red in basic (alkaline) solutions. The transition range for this color change is typically pH 8.2 to 10.0.
Neutral pH Indicator: Phenolphthalein is commonly used as a neutral pH indicator, making it suitable for titrations involving strong acids and strong bases.
Titration Endpoint Indicator: It is frequently used in acid-base titrations to indicate the endpoint of the reaction, where the amount of titrant added is stoichiometrically equivalent to the amount of analyte present.
Solubility: Phenolphthalein is soluble in alcohol but generally poorly soluble in water. This solubility property can affect its use in certain aqueous solutions.
Laboratory Grade: Phenolphthalein used in laboratories is typically of high purity, meeting specific standards for analytical applications.
Safety Considerations: While phenolphthalein itself is generally considered safe to use in laboratories, researchers should follow safety guidelines, including wearing appropriate personal protective equipment.
Photodegradation: Phenolphthalein can be sensitive to light and is known to undergo photodegradation over time. Therefore, it is often stored in dark or opaque containers to maintain its stability.
Application in Education: Phenolphthalein is commonly used in educational settings for simple acid-base experiments, allowing students to observe the color change during titrations.
Regulatory Approval: Phenolphthalein has been approved for use in certain laboratory applications, but its use may be restricted in certain regions due to regulatory considerations.
When using phenolphthalein in the laboratory, it is crucial to follow proper handling procedures, use it within its specified pH range, and be aware of any specific regulations or guidelines related to its use in a particular laboratory or educational institution.
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