26049

Chlorophosphonazo III

for spectrophotometric det. of alkaline earth metals

• Synonym(s): Bis(4-chloro-2-phosphonobenzolazo)chromotropic acid
• Empirical Formula (Hill Notation): C₂₂H₁₆Cl₂N₄O₁₄P₂S₂
• CAS Number: 1914-99-4
• Molecular Weight: 757.36
• Beilstein/REAXYS Number: 2934871
• EC Number: 217-628-8
• MDL number: MFCD00042698
• UNSPSC Code: 12000000
• PubChem Substance ID: 329752849
• NACRES: NA.21

Properties

• form: powder
• Quality Level: 100
• 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

Description

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

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)