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73688-85-4

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Basic Information
CAS No.: 73688-85-4
Name: 4-(4-DIMETHYLAMINOPHENYLAZO)BENZENEARSONIC ACID HYDROCHLORIDE
Molecular Structure:
Molecular Structure of 73688-85-4 (4-(4-DIMETHYLAMINOPHENYLAZO)BENZENEARSONIC ACID HYDROCHLORIDE)
Formula: C14H16 As N3 O3 . Cl H
Molecular Weight: 385.71
Synonyms: 4-(4-DIMETHYLAMINOPHENYLAZO)BENZENEARSONIC ACID HYDROCHLORIDE;4-(4-DIMETHYLAMINOPHENYLAZO)PHENYLARSONIC ACID HYDROCHLORIDE;4-(4-DIMETHYLAMINOAZO)PHENYLARSONIC ACID HYDROCHLORIDE;4-DIMETHYLAMINOAZOPHENYLARSONIC ACID HYDROCHLORIDE;P-[[P-DIMETHYLAMINO]PHENYL] AZO BENZENEARSONIC ACID HYDROCHLORIDE;4-(p-dimethylaminophenylazo)benzenearsonicacidhydrochloride;4-(p-dimethylaminophenylazo)-benzenearsonicacihydrochloride;4-(4-(dimethylamino)phenylazo)benzene-arsonic aci
Melting Point: 203 °C (dec.)(lit.)
Boiling Point: 606°C at 760 mmHg
Flash Point: 320.3°C
Hazard Symbols:
Risk Codes: 23/25-50/53
Safety: Poison by intravenous route. When heated to decomposition it emits toxic fumes of NOx, As, and HCl.
PSA: 85.49000
LogP: 2.53100
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Chemistry

The Molecular Structure of  4-(p-Dimethylaminophenylazo)benzenearsonic acid hydrochloride (CAS NO.73688-85-4):

Molecular Formula: C14H17AsClN3O3
Molecular Weight: 385.677680 g/mol
IUPAC: [4-(4-dimethylaminophenyl)diazenylphenyl]arsonic acid hydrochloride 
Flash Point: 320.3 °C
Enthalpy of Vaporization: 94.73 kJ/mol
Boiling Point: 606 °C at 760 mmHg
Vapour Pressure: 1.54E-15 mmHg at 25°C 
ACD/LogP: 2.21
ACD/LogD (pH 5.5): 0.26
ACD/LogD (pH 7.4): -1.18
ACD/BCF (pH 5.5): 1
ACD/BCF (pH 7.4): 1
ACD/KOC (pH 5.5): 4.27
ACD/KOC (pH 7.4): 1 
Smiles: c1(ccc(cc1)\N=N\c1ccc(cc1)N(C)C)[As](=O)(O)O.Cl

Toxicity Data With Reference

1.    

ivn-mus LD50:25 mg/kg

     CSLNX*    U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) NX#05710 .

Safety Profile

Poison by intravenous route. When heated to decomposition it emits toxic fumes of NOx, As, and HCl.
Hazard Codes: ToxicT DangerousN
Risk Statements: 23/25-50/53
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 20/21-28-45-60-61 
S20/21: When using, do not eat, drink or smoke 
S28: After contact with skin, wash immediately with plenty of soap-suds
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S60: This material and its container must be disposed of as hazardous waste
S61: Avoid release to the environment. Refer to special instructions / safety data sheets
RIDADR: UN 3077 9/PG 3
WGK Germany: 3
RTECS: CY4800000

Standards and Recommendations

OSHA PEL: TWA 0.5 mg(As)/m3

Specification

 4-(p-Dimethylaminophenylazo)benzenearsonic acid hydrochloride (CAS NO.73688-85-4) is also called as NSC 148368 ; Arsonic acid, (4-((4-(dimethylamino)phenyl)azo)phenyl)-,monohydrochloride (9CI) ; Benzenearsonic acid, 4-(p-dimethylaminophenylazo)-, hydrochloride .