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Phenolphthalein Structure & CAS Number Guide - High-Quality Chemical Solutions
- Time of issue:Май . 07, 2025 15:12
(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 .
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- Time of issue:2019-12-30 10:55
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(struktur phenolphthalein)
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(struktur phenolphthalein)
FAQS on struktur phenolphthalein
Q: What is the chemical structure of phenolphthalein?
A: Phenolphthalein has a tricyclic structure with two phenol groups connected by a sulfonic acid derivative. Its molecular formula is C₂₀H₁₄O₄, and it forms a colorless compound in acidic solutions. The structure enables its pH-sensitive color change to pink in basic conditions.
Q: What is the CAS number for phenolphthalein?
A: The CAS registry number for phenolphthalein is 77-09-8. This unique identifier is used globally to reference the compound in chemical databases and regulatory documents. It ensures accurate identification in research and industrial applications.
Q: How is the CAS number for phenolphthalein used in chemical safety data?
A: The CAS number (77-09-8) helps classify phenolphthalein in safety data sheets (SDS) and regulatory guidelines. It streamlines hazard communication and compliance with international chemical regulations. This number is critical for handling, storage, and disposal protocols.
Q: What functional groups are present in the structure of phenolphthalein?
A: Phenolphthalein contains hydroxyl (-OH) groups from its phenol rings and a central lactone ring. The lactone ring opens under basic conditions, forming a conjugated system responsible for its pink color. These functional groups dictate its pH-responsive behavior.
Q: Is the CAS number 77-09-8 specific to phenolphthalein alone?
A: Yes, CAS number 77-09-8 uniquely identifies phenolphthalein across all chemical databases and regulatory systems. No other compound shares this CAS number, ensuring precise tracking in scientific and commercial contexts. Always verify this number for accurate chemical identification.
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