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Calconcarboxylic acid
Calconcarboxylic acid
Calconcarboxylic acid
Thermo Scientific Chemicals

Calconcarboxylic acid

CAS: 3737-95-9 | C21H14N2O7S | 438.41 g/mol
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Catalog number B23459.18
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Quantity:
50 g
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Price (USD)
168.65
Online Exclusive
187.00
Save 18.35 (10%)
Each
Chemical Identifiers
CAS3737-95-9
IUPAC Name3-hydroxy-4-{2-[(1Z)-2-oxo-4-sulfo-1,2-dihydronaphthalen-1-ylidene]hydrazin-1-yl}naphthalene-2-carboxylic acid
Molecular FormulaC21H14N2O7S
InChI KeyULIVOAKVRBXKKS-PYCFMQQDSA-N
SMILESOC(=O)C1=C(O)C(N\N=C2/C(=O)C=C(C3=CC=CC=C23)S(O)(=O)=O)=C2C=CC=CC2=C1
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SpecificationsSpecification SheetSpecification Sheet
Appearance (Color)Dark brown/purple to black
FormPowder
CommentPasses test for indicator for metal titration
Identification (FTIR)Conforms
Calconcarboxylic acid is used as an indicator for calcium titrations with ethylenediaminetetraacetic acid (EDTA) in the presence of magnesium.

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
Calconcarboxylic acid is used as an indicator for calcium titrations with ethylenediaminetetraacetic acid (EDTA) in the presence of magnesium.

Solubility
Soluble in water, ethanol, sodium hydroxide and methanol.

Notes
Incompatible with strong oxidizing agents.
RUO – Research Use Only

General References:

  1. Indicator for complexometric determination of Ca in the presence of Mg: Anal. Chem., 28, 1026 (1956); Analyst, 106, 227 (1981).
  2. Zhu, Z.; Zhu, X.; Shen, J.; Zhou, A.; Ni, M.; Jin, L.; Cong, W. A new fluorescent quenching method for the determination of phosphoproteins by using calconcarboxylic acid. Electrophoresis 2015, 36 (6), 924-929.
  3. Peng, J.; Dong, N.; Dong, Y.; Pan, Z.; Li, W. Solubility, Metastable Zone Width, and Nucleation Kinetics of Boric Acid in the NaCl-KCl-CaCl2-H2O System. J. Chem. Eng. Data 2015, 60 (11), 3341-3346.