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3737-95-9 - Calconcarboxylic acid - 3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)-2-naphthalenecarboxylic acid - Patton and Reeder's Reagent - B23459 - Alfa Aesar

B23459 Calconcarboxylic acid

CAS Number
3737-95-9
Synonyms
3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)-2-naphthalenecarboxylic acid
Patton and Reeder's Reagent

Size Price ($) Quantity Availability
10g 37.28
50g 124.63
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Calconcarboxylic acid

MDL
MFCD00004078
EINECS
223-117-0

Chemical Properties

Formula
C21H14N2O7S
Formula Weight
438.42
Melting point
ca 300° dec.
Solubility
Soluble in water, ethanol, sodium hydroxide and methanol.

Applications

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

Notes

Incompatible with strong oxidizing agents.

Literature References

Indicator for complexometric determination of Ca in the presence of Mg: Anal. Chem., 28, 1026 (1956); Analyst, 106, 227 (1981).

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.

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.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Beilstein
727492
Harmonized Tariff Code
2927.00
TSCA
Yes

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