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Name	4-NITROPHENYLARSONIC ACID	EINECS	N/A
CAS No.	98-72-6	Density	g/cm³
PSA	103.35000	LogP	-0.32100
Solubility	N/A	Melting Point	300°C(lit.)
Formula	C6H6 As N O5	Boiling Point	540.9°Cat760mmHg
Molecular Weight	247.039	Flash Point	243.3°C
Transport Information	N/A	Appearance	N/A
Safety	Poison by ingestion and intravenous routes. When heated to decomposition it emits very toxic fumes of NO_x and As. See also ARSENIC COMPOUNDS and NITRO COMPOUNDS of AROMATIC HYDROCARBONS.	Risk Codes	23/25-50/53
Molecular Structure		Hazard Symbols	T,N
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	Article Data	15

4-NITROPHENYLARSONIC ACID Chemical Properties

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.

4-NITROPHENYLARSONIC ACID Uses

4-Nitrophenylarsonic acid (CAS NO.98-72-6) is used as pharmaceutical intermediates, but also an analytical reagent.

4-NITROPHENYLARSONIC ACID 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) .

4-NITROPHENYLARSONIC ACID 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 .

4-NITROPHENYLARSONIC ACID Consensus Reports

Arsenic and its compounds are on the Community Right-To-Know List.

4-NITROPHENYLARSONIC ACID Safety Profile

RIDADR UN3465 6.1/PG 3

4-NITROPHENYLARSONIC ACID 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

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