o-Cresolphthalein
| Code | Size | Price |
|---|
| CDX-C0242-G010 | 10 g | £53.00 |
Quantity:
Prices exclude any Taxes / VAT
Overview
Regulatory Status: RUO
Shipping:
Ambient
Storage:
+20°C
Documents
Further Information
Alternate Names/Synonyms:
Ortho-Cresolphthalein; Cresolphthalein; 3',3''-Dimethylphenolphthalein; BRN 0310554; 3,3-Bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1(3H)-one
Appearance:
White to light yellow powder.
CAS:
596-27-0
EClass:
32160000
Form (Short):
solid
InChi:
InChI=1S/C22H18O4/c1-13-11-15(7-9-19(13)23)22(16-8-10-20(24)14(2)12-16)18-6-4-3-5-17(18)21(25)26-22/h3-12,23-24H,1-2H3
InChiKey:
CPBJMKMKNCRKQB-UHFFFAOYSA-N
Long Description:
Chemical. CAS: 596-27-0. Formula: C22H18O4. MW: 346.38. Synthetic. 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 (lambdamax) 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.
MDL:
MFCD00005912
Molecular Formula:
C22H18O4
Molecular Weight:
346.38
Package Type:
Vial
Product 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 (lambdamax) 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.
Purity:
>95% (NMR)
SMILES:
O=C1C2=CC=CC=C2C(C3=CC=C(O)C(C)=C3)(C4=CC(C)=C(O)C=C4)O1
Solubility Chemicals:
Soluble in ethanol. Insoluble in water.
Source / Host:
Synthetic
Transportation:
Non-hazardous
UNSPSC Category:
Fluorescent Reagents
UNSPSC Number:
41105331
Use & Stability:
Stable for at least 2 years after receipt when stored at +4°C.
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)