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Name	4-Amino-4'-hydroxyazobenzene	EINECS	N/A
CAS No.	103-18-4	Density	1.23g/cm³
PSA	70.97000	LogP	3.97100
Solubility	N/A	Melting Point	185-190 °C (decomp)(Solv: ethyl acetate (141-78-6))
Formula	C12H11 N3 O	Boiling Point	397.1°Cat760mmHg
Molecular Weight	213.239	Flash Point	193.9°C
Transport Information	N/A	Appearance	N/A
Safety	Poison by intraperitoneal route. Moderately toxic by ingestion. Questionable carcinogen with experimental tumorigenic data. When heated to decomposition it emits toxic fumes of NO_x.	Risk Codes	N/A
Molecular Structure		Hazard Symbols	N/A
Synonyms	Phenol,4-[(4-aminophenyl)azo]- (9CI); Phenol, p-[(p-aminophenyl)azo]- (6CI,7CI,8CI);4-Amino-4'-hydroxyazobenzene; 4-[(4-Aminophenyl)azo]phenol;4'-Hydroxy-4-aminoazobenzene; NSC 127114; p-[(p-Aminophenyl)azo]phenol	Article Data	14

4-Amino-4'-hydroxyazobenzene Chemical Properties

IUPAC: 4-[(4-Aminophenyl)hydrazinylidene]cyclohexa-2,5-dien-1-one
4-Amino-4'-hydroxyazobenzene with CAS No.of 103-18-4 is also called for 4'-Hydroxy-4-aminoazobenzene ; Azobenzene, 4-amino-4'-hydroxy- ; EINECS 203-085-4 ; HSDB 5350 ; NSC 127114 ; Phenol, 4-((4-aminophenyl)azo)- ; Phenol, p-((p-aminophenyl)azo)- ; p-((p-Aminophenyl)azo)phenol and so on.
CAS: 103-18-4
Molecular Formula: C₁₂H₁₁N₃O
Molecular Weight: 213.23
EINECS: 203-085-4
ACD/LogP: 0.65
ACD/LogD (pH 5.5): 0.33
ACD/LogD (pH 7.4): 0.65
ACD/BCF (pH 5.5): 1
ACD/BCF (pH 7.4): 1.82
ACD/KOC (pH 5.5): 25.83
ACD/KOC (pH 7.4): 53.18
H bond acceptors: 4
H bond donors: 3
Freely Rotating Bonds: 3
Heavy Atom Count: 16
Formal Charge: 0
Complexity: 331
Isotope Atom Count: 0
Defined Atom StereoCenter Count: 0
Undefined Atom StereoCenter Count: 0
Defined Bond StereoCenter Count: 0
Undefined Bond StereoCenter Count: 0
Covalently-Bonded Unit Count: 1
Polar Surface Area: 35.91 Å²
Index of Refraction: 1.634
Molar Refractivity: 61.62 cm³
Molar Volume: 172.2 cm³
Surface Tension: 51 dyne/cm
Density: 1.23 g/cm³
Flash Point: 193.9 °C
Enthalpy of Vaporization: 64.75 kJ/mol
Boiling Point: 397.1 °C at 760 mmHg
Vapour Pressure: 1.63E-06 mmHg at 25°C
The molecular structure of 4-Amino-4'-hydroxyazobenzene with CAS No.of 103-18-4:

4-Amino-4'-hydroxyazobenzene Toxicity Data With Reference

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
rat	LD50	intraperitoneal	300mg/kg (300mg/kg)	BEHAVIORAL: SLEEP	Annals of Applied Biology. Vol. 52, Pg. 33, 1963.
rat	LD50	oral	1950mg/kg (1950mg/kg)	BEHAVIORAL: SLEEP	Annals of Applied Biology. Vol. 52, Pg. 33, 1963.

4-Amino-4'-hydroxyazobenzene Consensus Reports

Reported in EPA TSCA Inventory.

4-Amino-4'-hydroxyazobenzene Safety Profile

Poison by intraperitoneal route. Moderately toxic by ingestion. Questionable carcinogen with experimental tumorigenic data. When heated to decomposition it emits toxic fumes of NO_x.

4-Amino-4'-hydroxyazobenzene Specification

Removal in wastewater treatment of 4-Amino-4'-hydroxyazobenzene (CAS No.103-18-4):
Total removal:1.94 percent
Total biodegradation:0.09 percent
Total sludge adsorption:1.85 percent
Total to air:0.00 percent
(using 10000 hr Bio P,A,S)

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