Phenolphthalein standard solution
1000μg/mL in Methanol
Reagent
Code: #223718
Alias
phenolphthalein; phenolphthalein, phenolphthalein, 3,3-bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone; [pH]
CAS Number
77-09-8
blur_circular Chemical Specifications
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Molecular Information
Weight
318.32 g/mol
Formula
C₂₀H₁₄O₄
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Registry Numbers
EC Number
201-004-7
MDL Number
MFCD00005913
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Storage & Handling
Storage
2-8°C, avoiding light
description Product Description
Used as an indicator in acid-base titrations, phenolphthalein standard solution changes color from colorless to pink in the pH range of 8.2 to 10.0, making it ideal for detecting the endpoint in strong acid-strong base reactions. It is commonly used in educational laboratories and quality control testing in industries such as pharmaceuticals, water treatment, and food production to determine acidity or alkalinity. Due to its precise concentration, the standard solution ensures accurate and reproducible results in volumetric analysis.
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