Thermo Scientific Chemicals

o-Cresolphthalein complexone, indicator grade

Catalog number: L03859.03
1 g, Each
Thermo Scientific Chemicals

o-Cresolphthalein complexone, indicator grade

Catalog number: L03859.03
1 g, Each
Quantity
Catalog number: L03859.03
also known as L03859-03
Price (EUR)
Quantity
-

Chemical Identifiers

CAS
2411-89-4
IUPAC Name
2-[({5-[1-(3-{[bis(carboxymethyl)amino]methyl}-4-hydroxy-5-methylphenyl)-3-oxo-1,3-dihydro-2-benzofuran-1-yl]-2-hydroxy-3-methylphenyl}methyl)(carboxymethyl)amino]acetic acid
Molecular Formula
C32H32N2O12
InChI Key
IYZPEGVSBUNMBE-UHFFFAOYSA-N
SMILES
CC1=CC(=CC(CN(CC(O)=O)CC(O)=O)=C1O)C1(OC(=O)C2=CC=CC=C12)C1=CC(C)=C(O)C(CN(CC(O)=O)CC(O)=O)=C1
Appearance (Color)
White to cream
Form
Powder
Loss on Drying
<6.0% (105?C/constant weight)
lambda-max (UV-Vis)
561-581 nm (0.1M NaOH)

Description

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.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

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.

Solubility
Soluble in NaOH (50 mg/ml), aqueous ammonia, and organic solvents. Insoluble in water.

Notes
Store away from strong oxidizing agents. Keep container tightly closed. Store in cool, dry conditions in well sealed containers.
RUO – Research Use Only

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