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2411-89-4 - o-Cresolphthalein complexone, indicator grade - o-Cresolphthalexon - Phthalein complexone - L03859 - Alfa Aesar

L03859 o-Cresolphthalein complexone, indicator grade

CAS Number
2411-89-4
Synonyms
o-Cresolphthalexon
Phthalein complexone

Size Price ($) Quantity Availability
1g 17.50
5g 43.90
25g 143.00
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o-Cresolphthalein complexone, indicator grade

MDL
MFCD00005911
EINECS
219-318-8

Chemical Properties

Formula
C32H32N2O12
Formula Weight
636.62
Melting point
ca 198° dec.
Solubility
Soluble in NaOH (50 mg/ml), aqueous ammonia, and organic solvents. Insoluble in water.

Applications

Indicator for complexometric titration of Mg, Ca, Sr and Ba. It is used as an alkaline earth metal ion indicator. Suggested to be colorless at pH 11, but turns pink in the presence of alkaline earth metals. Also utilized in an auto analyzer to determine serum calcium.

Notes

Store away from strong oxidizing agents. Keep container tightly closed. Store in cool, dry conditions in well sealed containers.

Literature References

J. Stern; W.H.P. Lewis. The colorimetric estimation of calcium in serum with o-cresolphthalein complexone. Clinica Chimica Acta. 1957, 2, (6), 576-580.

F. H. Pollard and J. V. Martin. The spectrophotometric determination of the alkaline-earth metals with murexide, eriochrome black T and with o-cresolphthalein complexone. Analyst. 1956, 81, (963), 348-353.

Indicator for complexometric titration of Mg, Ca, Sr and Ba: Helv. Chim. Acta, 72, 113 (1954).

Other References

Beilstein
381994
Harmonized Tariff Code
2932.20
TSCA
Yes

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