Phenolphthalein

biotech grade

  • Product Code: 54326
  CAS:    77-09-8
Molecular Weight: 318.32 g./mol Molecular Formula: C₂₀H₁₄O₄
EC Number: 201-004-7 MDL Number: MFCD00005913
Melting Point: 258-263 °C Boiling Point:
Density: 1.299 Storage Condition: room temperature
Product Description: Phenolphthalein is widely used as a pH indicator in various laboratory experiments and titration processes. In acidic or neutral solutions, it remains colorless, but it turns a distinct pink or magenta color in basic solutions, typically around pH 8.2 to 10. This property makes it invaluable for determining the endpoint in acid-base titrations, particularly in educational and analytical chemistry settings. It has also been historically used in medical applications as a laxative, though this use has declined due to safety concerns and the availability of safer alternatives. Additionally, phenolphthalein is employed in forensic science as a presumptive test for blood, where it reacts with hemoglobin to produce a visible color change, aiding in crime scene investigations. Its versatility in both scientific and practical applications highlights its importance across multiple fields.
Product Specification:
Test Specification
IGNITION RESIDUE AS SULFATE 0-0.05
LOSS ON DRYING 0-1
APPEARANCE WHITE TO LIGHT YELLOW POWDER
PH VISUALTRANSITION INTERVAL 8.0colorless-10.0red or purple)
SOLUBILITY IN ETHANOL PASS
Sizes / Availability / Pricing:
Size (g) Availability Price Quantity
50.000 10-20 days £14.93
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500.000 10-20 days £87.30
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2500.000 10-20 days £316.19
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Phenolphthalein
Phenolphthalein is widely used as a pH indicator in various laboratory experiments and titration processes. In acidic or neutral solutions, it remains colorless, but it turns a distinct pink or magenta color in basic solutions, typically around pH 8.2 to 10. This property makes it invaluable for determining the endpoint in acid-base titrations, particularly in educational and analytical chemistry settings. It has also been historically used in medical applications as a laxative, though this use has declined due to safety concerns and the availability of safer alternatives. Additionally, phenolphthalein is employed in forensic science as a presumptive test for blood, where it reacts with hemoglobin to produce a visible color change, aiding in crime scene investigations. Its versatility in both scientific and practical applications highlights its importance across multiple fields.
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