ARSENAZO I

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Products Intro: Product Name:arsenazo i
CAS:520-10-5
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CAS:520-10-5
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CAS:520-10-5
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CAS:520-10-5
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Products Intro: Product Name:Arsenazo I
CAS:520-10-5
ARSENAZO I Basic information
Product Name:ARSENAZO I
Synonyms:ARSENAZO;ARSENAZO 1;ARSENAZO I;2-(O-ARSONOPHENYLAZO)-1,8-DIHYDROXYNAPHTHALENEDISULFONIC ACID, SODIUM SALT;2-(1,8-DIHYDROXY-3,6-DISULFO-2-NAPHTHYLAZO)BENZENEARSONIC ACID TRISODIUM SALT;2-(1,8-DIHYDROXY-3,6-DISULFO-2-NAPHTHYLAZO)PHENYLARSONIC ACID DISODIUM SALT;2-(2-ARSONOPHENYLAZO)CHROMOTROPIC ACID DISODIUM SALT;O-(1,8-DIHYDROXY-3,6-DISULFO-2-NAPHTHYLAZO)BENZENEARSONIC ACID SODIUM SALT
CAS:520-10-5
MF:C16H13AsN2O11S2
MW:548.33
EINECS:208-285-5
Product Categories:
Mol File:520-10-5.mol
ARSENAZO I Structure
ARSENAZO I Chemical Properties
Melting point ≥300 °C(lit.)
solubility methanol: 1 mg/mL, clear, red
pka-0.71±0.40(Predicted)
form Dark red powder.
Safety Information
Hazard Codes T,N
Risk Statements 23/25-50/53
Safety Statements 20/21-28-45-60-61
RIDADR UN 3465 6.1/PG 3
WGK Germany 3
HazardClass 6.1(b)
PackingGroup III
MSDS Information
ProviderLanguage
ACROS English
SigmaAldrich English
ARSENAZO I Usage And Synthesis
Chemical Propertiesbordeaux powder
UsesThe reagent reacts with many metal ions, such as uranium(IV), thorium(IV), zirconium(IV), scandium(III), lanthanum(III), cerium(III), aluminium(III), beryllium( III), titanium(III), niobium(lll), tantalum(III), vanadium(IV), tin(IV), bismuth( III), gallium(III), copper(III), palladium(II), magnesium(II) and calcium(II) to give coloured complexes. It has been used for the photometric determination of the majority of the above-listed metal ions. Though the reagent reacts with such a variety of metal ions, the complex formation reaction may be made selective for individual metal ions by appropriate choice of the reaction conditions, primarily of the pH of the solution. For instance, thorium can be determined with Arsenazo I in the presence of almost all rare earth metals, and similarly zirconium and thorium in the presence of uranium, etc. The stabilities of the metal complexes of Arsenazo I are lower than those of the corresponding complexes of EDTA. It can also therefore be used advantageously as indicator in complexometric determination of some metals (e.g. plutonium, thorium).
The analytical sensitivity of the formation of Arsenazo I complexes is comparatively high (0.05-0.1 γ/ml). However, the importance of the reagent is decreasing in analytical practice, in parallel with an increase in significance of the related reagent, Arsenazo III, which gives more stable complexes with higher absorbances, and which is therefore of greater analytical sensitivity.
ARSENAZO I Preparation Products And Raw materials
Tag:ARSENAZO I(520-10-5) Related Product Information
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