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C85778

Sigma-Aldrich

o-Cresolphthalein

Indicator grade, powder

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About This Item

Formula empirica (notazione di Hill):
C22H18O4
Numero CAS:
596-27-0
Peso molecolare:
346.38
Beilstein:
310554
Numero CE:
209-881-8
Numero MDL:
MFCD00005912
Codice UNSPSC:
12171500
ID PubChem:
24893078
NACRES:
NA.47

product name

o-Cresolphthalein, indicator grade

Grado

indicator grade

Forma fisica

powder

tecniche

titration: suitable

Colore

beige

pH

8.2-9.8, colorless to red

Punto di fusione

219-221 °C (lit.)

λmax

381 nm (2nd)
566 nm

ε (coefficiente d’estinzione)

≥10000 at 294-300 nm
≥39000 at 564-570 nm
≥5000 at 378-384 nm

applicazioni

diagnostic assay manufacturing
hematology
histology

Temperatura di conservazione

room temp

Stringa SMILE

Cc1cc(ccc1O)C2(OC(=O)c3ccccc23)c4ccc(O)c(C)c4

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
CPBJMKMKNCRKQB-UHFFFAOYSA-N

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Applicazioni

O-Cresolphthalein has been used as a component in calcifying media for calcification assay.

Azioni biochim/fisiol

o-Cresolphthalein is a reversible pH indicator. 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.

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

Eyeshields, Gloves, type N95 (US)

Certificati d'analisi (COA)

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Natalia Campos-Obando et al.
European journal of epidemiology (2018-05-17)
Hyperphosphatemia has been associated with increased mortality in chronic kidney disease but the nature of such a relation in the general population is unclear. To investigate the association between phosphate (P) levels and all-cause and cause-specific mortality, we assessed two
Jin-Hyun Kim et al.
PloS one, 14(4), e0215244-e0215244 (2019-04-17)
In the stratum corneum, the intercellular junction made up of cadherin proteins provides the structural integrity of the framework. Ca2+ ions are known to play a key role in maintaining this junction. In this study, we hypothesized that Ca2+ chelation
Hyunseok Peter Kang et al.
Clinical chemistry, 50(4), 741-746 (2004-02-14)
Gadolinium formulations, which are administered as contrast agents in magnetic resonance imaging examinations, interfere with colorimetric serum calcium determinations. We performed an in vitro study to determine the extent to which three gadolinium formulations-gadodiamide (Omniscan), gadopentetate dimeglumine (Magnevist), and gadoversetamide
Ali Duran et al.
Journal of hazardous materials, 169(1-3), 466-471 (2009-04-29)
In present study preconcentration followed by solid phase extraction of heavy metal ions, Cu(II), Co(II), Ni(II) and Pb(II) using a multiwalled carbon nanotubes (MWNTs) and complexing reagent o-cresolphthalein complexone were investigated. The effects of parameters, including pH of the solutions
Flow visualization in parallel-plate ducts with corrugated walls.
Focke WW and Knibbe PG
Journal of Fluid Mechanics, 165 , 73-77 (1986)
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