Chlorophosphonazo III
Synonym(s):Bis(4-chloro-2-phosphonobenzolazo)chromotropic acid
- CAS NO.：1914-99-4
- Empirical Formula: C22H16Cl2N4O14P2S2
- Molecular Weight: 757.36
- MDL number: MFCD00042698
- EINECS: 217-628-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-09-12 18:56:13
What is Chlorophosphonazo III?
The Uses of Chlorophosphonazo III
Chlorophosphonazo III was used as a chromogenic agent along with PVC, during the determination of calcium via a disposable optical sensor.
What are the applications of Application
Chlorophosphonazo III is a reagent for the spectrophotometric determination of alkaline earth metals
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.
Properties of Chlorophosphonazo III
| Melting point: | >300oC |
| Density | 2.08±0.1 g/cm3(Predicted) |
| storage temp. | -20°C Freezer, Under inert atmosphere |
| solubility | Methanol (Slightly), Water (Slightly) |
| form | Solid |
| pka | -1.36±0.40(Predicted) |
| color | Black |
| BRN | 2934871 |
| CAS DataBase Reference | 1914-99-4(CAS DataBase Reference) |
| EPA Substance Registry System | 2,7-Naphthalenedisulfonic acid, 3,6-bis[(4-chloro-2-phosphonophenyl)azo]-4,5-dihydroxy- (1914-99-4) |
Safety information for Chlorophosphonazo III
Computed Descriptors for Chlorophosphonazo III
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