chlorophosphonazo iii

Names

[ CAS No. ]:
1914-99-4

[ Name ]:
chlorophosphonazo iii

[Synonym ]:
2,7-Bis-<4-chlor-2-phospheno-benzalazo>-1,8-dihydroxy-naphthalin-3,6-disulfonsaeure
2,7-Naphthalenedisulfonic acid, 3,6-bis[(E)-2-(4-chloro-2-phosphonophenyl)diazenyl]-4,5-dihydroxy-
2,7-Naphthalenedisulfonic acid, 3,6-bis((4-chloro-2-phosphonophenyl)azo)-4,5-dihydroxy-
2,7-Bis(4-chloro-2-phosphonophenylazo)-1,8-dihydroxy-3,6-naphthalenedisulfonicacid
dichlorophosphonoazo III
3,6-Bis((4-chloro-2-phosphonophenyl)azo)-4,5-dihydroxynaphthalene-2,7-disulphonic acid
disodiumsalt
3,6-Bis[(E)-(4-chloro-2-phosphonophenyl)diazenyl]-4,5-dihydroxy-2,7-naphthalenedisulfonic acid
Chlorophosphonazo III
EINECS 217-628-8
MFCD00042698

Biological Activity

[Description]:

Chlorophosphonazo III is a sensitive reagent for both calcium and magnesium. It is possible to determine calcium alone at pH 2.2 and calcium and magnesium at pH 7.0. Chlorophosphonazo III can also be used for the spectrophotometric determination of titanium, zirconium, thorium, and scandium, quinquevalent actinide elements, and protactinium[1].

[Related Catalog]:

Research Areas >> Others

[References]

[1]. Ferguson J W, et al. Simultaneous spectrophotometric determination of calcium and magnesium with chlorophosphonazo III. Analytical Chemistry, 1964, 36(4): 796-799.

Chemical & Physical Properties

[ Density]:
2.1±0.1 g/cm3

[ Molecular Formula ]:
C₂₂H₁₆Cl₂N₄O₁₄P₂S₂

[ Molecular Weight ]:
757.364

[ Exact Mass ]:
755.895691

[ PSA ]:
350.08000

[ LogP ]:
-2.70

[ Index of Refraction ]:
1.811

MSDS

Click to get detail MSDS

Safety Information

[ Personal Protective Equipment ]:
Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter

[ Hazard Codes ]:
Xn

[ Safety Phrases ]:
S22-S24/25

[ RIDADR ]:
NONH for all modes of transport

[ WGK Germany ]:
3

Articles

Simultaneous Spectrophotometric Determination of Calcium and Magnesium with Chlorophosphonazo III. Ferguson JW.

Anal. Chem. 36 (4) , 796-799, (1964)

Extraction and spectrophotometric determination of Nd (III), Th (IV) and U (VI) in synthetic brine using Chlorophosphonazo III. Chen JF, et.al.

Anal. Chim. Acta 284 (3) , 593-597, (1994)

Rapid changes in intracellular free calcium concentration. Detection by metallochromic indicator dyes in squid giant axon. Brown JE, et.al.

Biophys. J. 15 (11) , 1155, (1975)