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Calcon Carboxylic Acid IND Grade Reagent

Cas Number:3737-95-9
Formula: C21H14N2O7S
Molar Mass:438.41
EC Number:223-117-0

Quantity:
  • IND
  • LABOR
  • 401133125

Calcon Carboxylic Acid IND Grade Reagent


Cas Number:3737-95-9

Formula: C21H14N2O7S

Molar Mass:438.41

EC Number:223-117-0


Physicochemical properties:

Brown to black crystalline or brown powder. It is soluble in lye and ammonia, slightly soluble in water. It is red when the pH is less than 10, and is light blue between pH 13 and 14, and forms a red chelate compound with calcium. The melting point is 300 ° C. The maximum absorption wavelength is 560 (366) nm. Irritating. The product is also made into sodium salt, soluble in water, and the aqueous solution and ethanol solution are unstable. Usually it is used  mixed  with 100 times sodium chloride.


Usage:

Complex indicator. Measure the calcium.


Packing:

500g/25kg





Item of Analysis

Standard

Titration experiment

to pass test

Complex test

to pass test

Solubicity in NaoH

to pass test

Residue on ignition,%

0.3 max



Not a hazardous substance or mixture.


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