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Chemodex
o-Cresolphthalein
48
CHF
CHF 48.00
In stock
CDX-C0242-G01010 gCHF 48.00
| Product Details | |
|---|---|
| Synonyms | Ortho-Cresolphthalein; Cresolphthalein; 3',3''-Dimethylphenolphthalein; BRN 0310554; 3,3-Bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1(3H)-one |
| Product Type | Chemical |
| Properties | |
| Formula | C22H18O4 |
| MW | 346.38 |
| CAS | 596-27-0 |
| RTECS | SM8390000 |
| Source/Host Chemicals | Synthetic |
| Purity Chemicals | ≥95% (NMR) |
| Appearance | White to light yellow powder. |
| Solubility | Soluble in ethanol. Insoluble in water. |
| Identity | Determined by 1H-NMR. |
| Declaration | Manufactured by Chemodex. |
| Other Product Data |
Click here for Original Manufacturer Product Datasheet |
| InChi Key | CPBJMKMKNCRKQB-UHFFFAOYSA-N |
| Smiles | O=C1C2=CC=CC=C2C(C3=CC=C(O)C(C)=C3)(C4=CC(C)=C(O)C=C4)O1 |
| Shipping and Handling | |
| Shipping | AMBIENT |
| Short Term Storage | +20°C |
| Long Term Storage | +4°C |
| Use/Stability | Stable for at least 2 years after receipt when stored at +4°C. |
| Documents | |
| MSDS | Inquire |
| Product Specification Sheet | |
| Datasheet |
 Download PDF |
Description
o-Cresolphthalein is a reversible pH indicator that is colorless at pH 8.2 and red at pH 9.8. The kinetics of the reverse pathway (red-purple to colorless) is slow, thereby making it an appropriate molecule to check flow patterns in ducts with corrugated walls. It is also used for the colorimetric determination of calcium content via the o-cresolphthalein complexone method. Binding of calcium to o-cresolphthalein, in the presence of alkaline conditions (pH 10-12), results in the formation of a red complex with an absorbance at 570-575nm. Spectral data: UV-Visible (λmax) 566 nm, 381 nm (2nd). This compound is applied in sensors, display device, imaging materials, authentication system for secure documents, lithium cells, inks, markers, toners, paints, adhesives, food storage, urine analysis test strips, drugs and blood analysis.
Product References
(1) L.G. Morin; Am. J. Clin. Pathol. 61, 114 (1974) | (2) W. Moorehead; Clin. Chem. 20, 1458 (1974) | (3) K. Hosoi, et al.; J. Biochem. 78, 1331 (1975) | (4) R.W. Sabnis; Handbook of Acid-Base Indicators (2008)