Arsenic acid

Base Information

• Chemical Name: Arsenic acid
• CAS No.: 7778-39-4
• Deprecated CAS: 1327-52-2,58076-82-7,58076-82-7
• Molecular Formula: AsH₃O₄
• Molecular Weight: 141.943
• European Community (EC) Number: 231-901-9
• ICSC Number: 1625
• UN Number: 1553,1554
• UNII: N7CIZ75ZPN
• DSSTox Substance ID: DTXSID1034341
• Nikkaji Number: J3.112G
• Wikipedia: Arsenic acid
• Wikidata: Q413334
• ChEMBL ID: CHEMBL2374288
• Mol file: 7778-39-4.mol

Synonyms:arsenate;arsenic acid;metaarsenic acid;orthoarsenic acid;orthoarsenic acid, dihydrate;pyroarsenic acid

Chemical Property of Arsenic acid

Chemical Property:

• Appearance/Colour: COLOURLESS VISCOUS HYGROSCOPIC LIQUID
• Melting Point: 35 °C
• Boiling Point: 160 °C
• PKA: 3.09±0.10(Predicted)
• PSA: 77.76000
• Density: 2.2 g/cm3
• LogP: -2.17060
• Hydrogen Bond Donor Count: 3
• Hydrogen Bond Acceptor Count: 4
• Rotatable Bond Count: 0
• Exact Mass: 141.924728
• Heavy Atom Count: 5
• Complexity: 49.8
• Transport DOT Label: Poison

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Metals -> Arsenic Compounds, Inorganic
• Canonical SMILES: O[As](=O)(O)O
• Inhalation Risk: A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20 °C on spraying.
• Effects of Short Term Exposure: The substance is corrosive to the eyes, skin and respiratory tract. The substance may cause effects on the blood, cardiovascular system, gastrointestinal tract, liver and nervous system. The effects may be delayed.
• Effects of Long Term Exposure: The substance may have effects on the peripheral nervous system, skin and cardiovascular system. This may result in polyneuropathy and skin lesions. This substance is carcinogenic to humans.

Technology Process of Arsenic acid

There total 142 articles about Arsenic acid 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: 99.0%

water (7732-18-5) + arsenic(III) trioxide → orthoarsenic acid (7778-39-4,121471-47-4,1327-52-2)

Guidance literature:

With hydrogenchloride; hydrogenchloride; In water; Electrochem. Process; Ag cathode, RuO2 anode, Nafion membrane, 4.0 M HCl soln., i=0.1 A/cm**2,U=4.0-4.3 V, T=23-27°C;

DOI:10.1023/A:1020940322998

Reference yield:

arsenic (7440-38-2,460345-38-4,7784-42-1,127323-69-7) + bromine (7726-95-6) → hydrogen bromide (10035-10-6,12258-64-9) + orthoarsenic acid (7778-39-4,121471-47-4,1327-52-2)

Guidance literature:

In water; with excess of bromine water;

Reference yield:

nitrogen(II) oxide (10102-43-9) + arsenous acid (13464-58-9) → orthoarsenic acid (7778-39-4,121471-47-4,1327-52-2) + dinitrogen monoxide (10024-97-2)

Guidance literature:

In not given; in alkaline soln.;

upstream raw materials:

nitric acid

phenylarsane

p-aminophenylarsonic acid

hydrogenchloride

Downstream raw materials:

7,8-benzoquinoline

3-methyl-3H-triazolo<4,5-f>quinoline

7‐(trifluoromethyl)quinoline

5-(trifluoromethyl)quinolone

Refernces

Thermal decomposition of several layered zirconium salts

10.1023/A:1010136403670

The study investigates the thermal decomposition of zirconium molybdate, tungstate, and arsenate, focusing on their mass losses and thermal behavior. The chemicals used in the study include zirconium oxychloride, ammonium-heptamolybdate, hydrochloric acid, ammonium-paratungstate, arsenic acid, and conc. hydrochloric acid, which served as starting materials and reagents for the synthesis of the zirconium salts. The purpose of these chemicals was to prepare well-defined crystalline forms of the zirconium salts for thermal analysis, aiming to understand their thermal behavior and decomposition processes.