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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