Moneide Chemicals
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Acid Phenolphthalein High-Purity pH Indicator with CAS & Structure Data
- Time of issue:เม.ย. . 24, 2025 14:57
(Summary description)Tangshan Moneide Trading Co., Ltd. is a trading company specializing in the export of fine chemical products in China. Over the years, we have established good cooperative relations with many outstanding chemical production enterprises in China, and actively cooperated in research and development on some products. Our company's product series mainly include: electroplating chemicals, organic& inorganic fluoro chemicals, organic intermediate chemicals, phase transfer catalyst and Indicator or Biological stain .
- Categories:Company dynamic
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- Time of issue:2019-12-30 10:55
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Did you know 43% of lab technicians waste hours daily troubleshooting unstable pH indicators? With global demand for acid phenolphthalein (acid phenolphthalein) Our CAS 77-09-8 certified solution delivers 99.9% purity – 15% higher than industry average. The unique struktur phenolphthalein configuration ensures: Need specific CAS number phenolphthalein formats? We deliver: Ethanol/water ratios from 1:50 to 1:200 1L to 200L industrial drums When NovaLabs upgraded to our acid phenolphthalein (CAS 77-09-8), they achieved: Join 1,200+ labs trusting our struktur phenolphthalein solutions (acid phenolphthalein) A: In acidic conditions (pH < 8.2), phenolphthalein remains colorless. The acid environment prevents the formation of its conjugated structure responsible for the pink color. This makes it a common pH indicator in titrations. A: The CAS registry number for phenolphthalein is 77-09-8. This unique identifier is used in chemical databases and regulatory documentation. It helps ensure accurate substance identification worldwide. A: Phenolphthalein has a tricyclic structure with two phenol groups connected by a phthalein group (C20H14O4). Its color-changing property comes from pH-dependent lactone ring opening/closing. The structure contains three aromatic rings and two hydroxyl groups. A: Phenolphthalein is ideal for strong acid-strong base titrations due to its clear color transition between pH 8.2-12.0. It turns from colorless in acidic solutions to bright pink in basic solutions. The sharp endpoint makes visual detection easy. A: While phenolphthalein itself has low acute toxicity, prolonged exposure should be avoided. Acidic solutions containing phenolphthalein still require standard lab safety precautions. Always consult SDS sheets for proper handling guidelines.
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Purity
99.9%
98.2%
97.8%
Batch Consistency
±0.3%
±1.5%
±2.1%
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FAQS on acid phenolphthalein
Q: How does acid affect phenolphthalein?
Q: What is the CAS number for phenolphthalein?
Q: What is the molecular structure of phenolphthalein?
Q: Why is phenolphthalein used in acid-base titrations?
Q: Is phenolphthalein safe to handle in acidic solutions?
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