CPA-I/Chlorophosphonazo I
Item No.： SR0120
Store at： RT
English Name: cpa-i; Chlorophosphonazo I ； 1,8-Dihydroxy-2-［(4-chlorophenylphosphonic acid)-azo-3,6-naphthalenedisulfonic acid monosodiums
Other names: Chlorophosphonazo I; 2- (4-chloro-2-phosphonate phenylazo) - 1,8-dihydroxynaphthalene-3,6-disulfonic acid monosodium salt; 3 - [(4-chloro-2-phosphinyl phenyl) azo] - 4,5-dihydroxy-2,7-naphthalene disulfonic acid disodium salt
CAS No.: 85561-96-2
C16H11ClN2NaO11PS2?3H2O=614.86
Grade: Developer
Beer's law test: qualified
Magnesium sensitivity test: acceptable
Water dissolution test: qualified
Physicochemical Properties: dark red crystalline powder. Soluble in water. It is red in neutral and acidic solutions, purple in alkaline solutions, and changes from red to purple in weak acid solutions when reacting with a series of elements, only light blue when reacting with hexavalent uranium. The maximum absorption wavelength of the complex formed with uranium (ⅵ) is 605nm. The molar absorption coefficient is 2.31 × 105. The absorbance of the solution can remain unchanged in the range of pH 5.2 ~ 8.0.
Purpose: biochemical research. Photometric determination of uranium (Ⅵ). Determination of magnesium in nodular cast iron, aluminum alloy and zinc alloy
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