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| CAS No.: | 98-72-6 |
|---|---|
| Name: | P-NITROBENZENEARSONIC ACID |
| Article Data: | 15 |
| Molecular Structure: | |
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|
|
| Formula: | C6H6 As N O5 |
| Molecular Weight: | 247.039 |
| Synonyms: | Arsonicacid, (4-nitrophenyl)- (9CI); Benzenearsonic acid, p-nitro- (6CI,7CI,8CI);(4-Nitrophenyl)arsonic acid; (p-Nitrophenyl)arsonic acid; 4-Nitrobenzenearsonicacid; Hep-a-Stat; Histostat; Histostat 50; NSC 5085; Nitarson; Nitarsone;p-Nitrobenzenearsonic acid |
| Density: | g/cm3 |
| Melting Point: | 300°C(lit.) |
| Boiling Point: | 540.9°Cat760mmHg |
| Flash Point: | 243.3°C |
| Hazard Symbols: | T,N |
| Risk Codes: | 23/25-50/53 |
| Safety: | Poison by ingestion and intravenous routes. When heated to decomposition it emits very toxic fumes of NOx and As. See also ARSENIC COMPOUNDS and NITRO COMPOUNDS of AROMATIC HYDROCARBONS. |
| PSA: | 103.35000 |
| LogP: | -0.32100 |
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Chemistry
IUPAC Name: (4-Nitrophenyl)arsonic acid
Synonyms: 4-Nitrobenzenearsonicacid ; Arsonicacid,4-nitrophenyl ; Hep-a-stat ; Histostat ; Histostat50 ; Nitarson ; P-nitro-benzenearsonicaci ; Ras-26
CAS NO: 98-72-6
Molecular Formula: C6H6AsNO5
Molecular Weight: 247.04
Molecular Structure:
EINECS: 202-695-8
Flash Point: 243.3 °C
Enthalpy of Vaporization: 86.16 kJ/mol
Melting point 2:98-300 °C (decomposition).
Boiling Point: 540.9 °C at 760 mmHg
Vapour Pressure: 1.56E-12 mmHg at 25°C
Merck : 13,6594
Appearance: 4-Nitrophenylarsonic acid (CAS NO.98-72-6) is pale yellow leaf-crystal.
Solubility: 4-Nitrophenylarsonic acid (CAS NO.98-72-6) is soluble in hot water and hot alcohol, very slightly soluble in cold water and cold alcohol.
Uses
4-Nitrophenylarsonic acid (CAS NO.98-72-6) is used as pharmaceutical intermediates, but also an analytical reagent.
Production
4-Nitrophenylarsonic acid (CAS NO.98-72-6) is derived by reaction of diazotization and arsenication of p-nitroaniline.
adding Nitroaniline into hydrochloric acid, stirring 2h, put ice cubes down to -5 °C,add sodium nitrite solution in 15min , stirring about 1h, obtaining diazonium salt solution. arsenic trioxide and sodium carbonate dissolved in water, cooling to 25 °C below, adding copper sulfate solution, and then adding the above-mentioned diazonium salt solution, the reaction temperature was controlled at 25°C below, generating 4-Nitrophenylarsonic acid (CAS NO.98-72-6) .
Toxicity Data With Reference
| 1. | orl-rat LDLo:100 mg/kg | NCNSA6 National Academy of Sciences, National Research Council, Chemical-Biological Coordination Center, Review. 5 (1953),13. | ||
| 2. | ivn-mus LD50:18 mg/kg | CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) NX#01192 . |
Consensus Reports
Arsenic and its compounds are on the Community Right-To-Know List.
Safety Profile
RIDADR UN3465 6.1/PG 3
Standards and Recommendations
OSHA PEL: TWA 0.5 mg(As)/m3
ACGIH TLV: BEI: 35 µ (As)/L inorganic arsenic and methylated metabolites in urine