o-Cresolphthalein
AR, alcohol soluble
- Product Code: 126546
Alias:
o-cresolphthalein; 3,3'-Dimethylphenolphthalein, 3,3-bis(4-hydroxy-3-methylphenyl)-1(3H)-isobenzofuranone
CAS:
596-27-0
| Molecular Weight: | 346.38 g./mol | Molecular Formula: | C₂₂H₁₈O₄ |
|---|---|---|---|
| EC Number: | 209-881-8 | MDL Number: | MFCD00005912 |
| Melting Point: | 223-225 °C | Boiling Point: | |
| Density: | Storage Condition: | room temperature |
Product Description:
o-Cresolphthalein is primarily used as a pH indicator in various chemical and biological applications. It is commonly employed in titrations to determine the endpoint of acid-base reactions, particularly in the pH range of 8.2 to 9.8, where it changes color from colorless to pink. This property makes it useful in laboratory settings for analyzing the acidity or alkalinity of solutions. Additionally, it is utilized in clinical diagnostics, particularly in the measurement of calcium levels in blood serum. In this context, it forms a colored complex with calcium ions, allowing for quantitative analysis through spectrophotometric methods. Its stability and distinct color change make it a reliable tool in both research and medical laboratories.
Product Specification:
| Test | Specification |
|---|---|
| Ignition Residue (As Sulfate) | 0.1 |
| Loss On Drying | 1 |
| Solubility In Ethanol | 50mg/ml |
| Infrared Spectrum | Conforms To Structure |
| UV Spectrometry | Conforms To Structure |
| Vis Transition Interval | pH 8.2-colorless - pH 9.8-red/purple |
| Max | 563.0-568.0 |
Sizes / Availability / Pricing:
| Size (g) | Availability | Price | Quantity |
|---|---|---|---|
| 25.000 | 10-20 days | ฿300.00 |
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| 100.000 | 10-20 days | ฿580.00 |
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| 500.000 | 10-20 days | ฿2,670.00 |
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o-Cresolphthalein
o-Cresolphthalein is primarily used as a pH indicator in various chemical and biological applications. It is commonly employed in titrations to determine the endpoint of acid-base reactions, particularly in the pH range of 8.2 to 9.8, where it changes color from colorless to pink. This property makes it useful in laboratory settings for analyzing the acidity or alkalinity of solutions. Additionally, it is utilized in clinical diagnostics, particularly in the measurement of calcium levels in blood serum. In this context, it forms a colored complex with calcium ions, allowing for quantitative analysis through spectrophotometric methods. Its stability and distinct color change make it a reliable tool in both research and medical laboratories.
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