Arsenazo I

Base Information

• Chemical Name: Arsenazo I
• CAS No.: 520-10-5
• Molecular Formula: C16H13 As N2 O11 S2
• Molecular Weight: 548.34
• European Community (EC) Number: 222-600-3,208-285-5
• DSSTox Substance ID: DTXSID101047993
• Nikkaji Number: J11.784F
• Mol file: 520-10-5.mol

Synonyms:arsenazo I

Chemical Property of Arsenazo I

Chemical Property:

• Melting Point: ≥300 °C(lit.)
• Boiling Point: °Cat760mmHg
• PKA: -0.71±0.40(Predicted)
• Flash Point: °C
• PSA: 256.70000
• Density: g/cm³
• LogP: 2.63540
• Solubility.: methanol: 1 mg/mL, clear, red
• Hydrogen Bond Donor Count: 6
• Hydrogen Bond Acceptor Count: 13
• Rotatable Bond Count: 5
• Exact Mass: 547.917671
• Heavy Atom Count: 32
• Complexity: 971

Purity/Quality:

99%, ^*data from raw suppliers

ARSENAZO (I) 95.00% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): TN
• Hazard Codes: T,N
• Statements: 23/25-50/53
• Safety Statements: 20/21-28-45-60-61

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Dyes -> Azo Dyes
• Canonical SMILES: C1=CC=C(C(=C1)N=NC2=C(C3=C(C=C(C=C3C=C2S(=O)(=O)O)S(=O)(=O)O)O)O)[As](=O)(O)O
• Uses: The 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.

Technology Process of Arsenazo I

There total 2 articles about Arsenazo I which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

→ 3-(2-arsono-phenylazo)-4,5-dihydroxy-naphthalene-2,7-disulfonic acid (520-10-5)

Guidance literature:

Chromotropsaeure, (2-Aminophenyl)arsonsaeure;

Reference yield:

→ Arsenazo I (520-10-5)

Guidance literature:

diazotierte o-Aminophenylarsensaeure, 1,8-Dihydroxynaphthalin-3,6-disulfonsaeure;

DOI:10.1246/bcsj.44.2416

Reference yield:

copper(II) choride dihydrate + 3-(2-arsono-phenylazo)-4,5-dihydroxy-naphthalene-2,7-disulfonic acid (520-10-5) → [Cu2(O3AsC6H4NNC10H3(OH)2(SO3)2)]

Guidance literature:

With hydrogenchloride; sodium hydroxide; potassium chloride; In water; at 25.degdee.C, ionic strength of 1.0 mol*dm**-3 (KCl), pH values in range 3.221-11.045; not isolated, monitored by UV at 340-700 nm;

DOI:10.1039/DT9820001965