| | Identification | More |  | [Name] 
 2-Aminobenzenearsonic acid
 |  | [CAS] 
 2045-00-3
 |  | [Synonyms] 
 2-AMINOBENZENEARSONIC ACID
 2-AMINOPHENYLARSONIC ACID
 O-AMINOBENZENEARSONIC ACID
 O-AMINOPHENYLARSONIC ACID
 O-ARSANILIC ACID
 2-Arsanilic acid
 o-Aminobenzenearsoinc acid
 ortho-arsanilic acid
 O-ARSANILIC ACID CRYSTALLINE
 o-Aminbenzene ar-sonic acid
 O-ARSANILIC ACID/2-AMINOBENZENEARSONIC ACID
 |  | [EINECS(EC#)] 
 218-064-5
 |  | [Molecular Formula] 
 C6H8AsNO3
 |  | [MDL Number] 
 MFCD00007630
 |  | [Molecular Weight] 
 217.05
 |  | [MOL File] 
 2045-00-3.mol
 | 
 | Chemical Properties | Back Directory |  | [Appearance] 
 grey-green to brown powder
 |  | [Melting point ] 
 154-155 °C(lit.)
 |  | [Boiling point ] 
 519.3±52.0 °C(Predicted)
 |  | [density ] 
 1.79 g/cm3
 |  | [solubility ] 
 1 M NH4OH: soluble50mg/mL, clear to turbid (orange-brown)
 |  | [form ] 
 solid
 |  | [pka] 
 pK1: ca 2;pK2: 3.77;pK3: 8.66 (25°C)
 |  | [color ] 
 White to Light yellow to Light orange
 |  | [Stability:] 
 Hygroscopic, Moisture sensitive
 |  | [InChIKey] 
 LQCOCUQCZYAYQK-UHFFFAOYSA-N
 |  | [CAS DataBase Reference] 
 2045-00-3(CAS DataBase Reference)
 |  | [NIST Chemistry Reference] 
 O-arsanilic acid(2045-00-3)
 | 
 | Safety Data | Back Directory |  | [Hazard Codes ] 
 T,N
 |  | [Risk Statements ] 
 R23/25:Toxic by inhalation and if swallowed .
 R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
 |  | [Safety Statements ] 
 S20/21:When using, do not eat, drink or smoke .
 S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
 S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
 S60:This material and/or its container must be disposed of as hazardous waste .
 S61:Avoid release to the environment. Refer to special instructions safety data sheet .
 |  | [RIDADR ] 
 2811
 |  | [WGK Germany ] 
 3
 
 |  | [HS Code ] 
 2931.90.6000
 |  | [HazardClass ] 
 6.1
 |  | [PackingGroup ] 
 III
 | 
 | Hazard Information | Back Directory |  | [Chemical Properties] 
 grey-green to brown powder
 |  | [Uses] 
 o-Arsanilic Acid is an organoarsenic compound. o-Arsanilic Acid is a highly toxic contaminant and can be found in plants growing in contaminated soil.
 |  | [Purification Methods] 
 Crystallise it from water or ethanol/ether. POISONOUS. [Beilstein 16 I 463.]
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