639-44-1

Basic information

• Product Name: PHENOLTETRACHLOROPHTHALEIN
• Synonyms: PHENOLTETRACHLOROPHTHALEIN;4,5,6,7-tetrachlorophenolphthalein;4,5,6,7-tetrachloro-3,3-bis(4-hydroxyphenyl)phthalide;3,3-Bis(4-hydroxyphenyl)-4,5,6,7-tetrachloroisobenzofuran-1(3H)-one;4,5,6,7-Tetrachloro-3,3-bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one
• CAS NO: 639-44-1
• Molecular Formula: C₂₀H₁₀Cl₄O₄
• Molecular Weight: 456.1
• EINECS: 211-354-2
• Mol File: 639-44-1.mol
• Article Data: 0

Chemical Properties

• Melting Point: >300 °C
• Boiling Point: 690.7°C at 760 mmHg
• Flash Point: 371.5°C
• Appearance: /
• Density: 1.643g/cm³
• Vapor Pressure: 1.02E-19mmHg at 25°C
• Refractive Index: 1.703
• PKA: 8.86±0.30(Predicted)
• CAS DataBase Reference: PHENOLTETRACHLOROPHTHALEIN(CAS DataBase Reference)
• NIST Chemistry Reference: PHENOLTETRACHLOROPHTHALEIN(639-44-1)
• EPA Substance Registry System: PHENOLTETRACHLOROPHTHALEIN(639-44-1)

Safety Data

• Hazardous Substances Data: 639-44-1(Hazardous Substances Data)

Usage

General Description

Phenoltetrachlorophthalein, also known as bromophenol blue, is a chemical compound commonly used as an acid-base indicator in analytical chemistry. It is a dye that changes color depending on the pH of a solution, transitioning from yellow in acidic conditions to blue in alkaline conditions. Phenoltetrachlorophthalein is often used in various laboratory tests and experiments to determine the acidity or basicity of a solution, making it a useful tool for scientific research and analysis. Additionally, it is considered safe for use in these applications and does not pose significant health risks when handled properly.

InChI:InChI=1/C20H10Cl4O4/c21-15-13-14(16(22)18(24)17(15)23)20(28-19(13)27,9-1-5-11(25)6-2-9)10-3-7-12(26)8-4-10/h1-8,25-26H

Upstream product

• 632-58-6 tetrachlorophthalic acid 
• 108-95-2 phenol 
• 117-08-8 tetrachlorophthalic anhydride 
• 7664-93-9 sulfuric acid 

Downstream Products

• 4462-21-9 4,5,6,7-tetrachloro-3,3-bis-(4-hydroxy-3-sulfo-phenyl)-phthalide 
• 119248-63-4 4,5,6,7-tetrachloro-3,3-bis-(4-hydroxy-3,5-diiodo-phenyl)-phthalide 
• 6310-71-0 4,5,6,7-tetrachloro-3,3-bis-(3,5-dibromo-4-hydroxy-phenyl)-phthalide 
• 104541-43-7 3,3-bis-(4-acetoxy-phenyl)-4,5,6,7-tetrachloro-phthalide