26049
Chlorophosphonazo III
for spectrophotometric det. of alkaline earth metals
Synonym(s):
Bis(4-chloro-2-phosphonobenzolazo)chromotropic acid
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About This Item
Empirical Formula (Hill Notation):
C22H16Cl2N4O14P2S2
CAS Number:
Molecular Weight:
757.36
UNSPSC Code:
12352200
NACRES:
NA.21
PubChem Substance ID:
EC Number:
217-628-8
Beilstein/REAXYS Number:
2934871
MDL number:
form
powder
Quality Segment
quality
for spectrophotometric det. of alkaline earth metals
technique(s)
UV/Vis spectroscopy: suitable
SMILES string
Oc1c(\N=N\c2ccc(Cl)cc2P(O)(O)=O)c(cc3cc(c(\N=N\c4ccc(Cl)cc4P(O)(O)=O)c(O)c13)S(O)(=O)=O)S(O)(=O)=O
InChI
1S/C22H16Cl2N4O14P2S2/c23-10-1-3-12(14(7-10)43(31,32)33)25-27-19-16(45(37,38)39)5-9-6-17(46(40,41)42)20(22(30)18(9)21(19)29)28-26-13-4-2-11(24)8-15(13)44(34,35)36/h1-8,29-30H,(H2,31,32,33)(H2,34,35,36)(H,37,38,39)(H,40,41,42)/b27-25+,28-26+
InChI key
LMBABJNSZGKTBA-NBHCHVEOSA-N
General description
Chlorophosphonazo III is a highly sensitive reagent and can be used for the spectrophotometric determination of zirconium, titanium, thorium and scandium. It also finds application as an extractant, along with 1-butanol as solvent, for determination of micromolar concentrations of Nd(III), Th(IV) and U(VI) in brine. Above all that, it has two long wavelength maxima, one at 620 nm and one at 680 nm.
Application
Chlorophosphonazo III was used as a chromogenic agent along with PVC, during the determination of calcium via a disposable optical sensor.
Packaging
Bottomless glass bottle. Contents are inside inserted fused cone.
Other Notes
Reagent for the spectrophotometric determination of alkaline earth metals
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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