p-Anisidine
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p-Anisidine (or para-anisidine) is an organic compound with the formula CH3OC6H4NH2. A white solid, commercial samples can appear grey-brown owing to air oxidation. It is one of three isomers of anisidine, methoxy-containing anilines. It is prepared by reduction of 4-nitroanisole.[8]
Quick Facts Names, Identifiers ...
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Names | |||
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Preferred IUPAC name
4-Methoxyaniline[1] | |||
Other names
para-Anisidine; 4-Aminoanisole; p-Aminoanisole | |||
Identifiers | |||
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3D model (JSmol) |
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ChEBI | |||
ChEMBL | |||
ChemSpider |
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ECHA InfoCard | 100.002.959 | ||
EC Number |
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KEGG |
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PubChem CID |
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RTECS number |
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UNII | |||
UN number | 2431 | ||
CompTox Dashboard (EPA) |
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Properties[2] | |||
C7H9NO | |||
Molar mass | 123.155 g·mol−1 | ||
Appearance | Light reddish brown solid[3] | ||
Odor | Fishy[3] | ||
Density | 1.071 (at 57 °C) | ||
Melting point | 56 to 59 °C (133 to 138 °F; 329 to 332 K) | ||
Boiling point | 243 °C (469 °F; 516 K) | ||
Sparingly soluble[3] | |||
Solubility in other solvents | Soluble in ethanol, diethyl ether, acetone, benzene | ||
Vapor pressure | 0.006 mmHg (25 °C)[4] | ||
-80.56·10−6 cm3/mol | |||
Refractive index (nD) |
1.5559 | ||
Hazards | |||
Occupational safety and health (OHS/OSH): | |||
Main hazards |
Carcinogen | ||
GHS labelling: | |||
Warning | |||
H300, H310, H330, H350, H373, H400[5] | |||
P201, P202, P260, P262, P264, P270, P271, P273, P280, P281, P284, P301+P310, P302+P350, P304+P340, P308+P313, P310, P314, P320, P321, P322, P330, P361, P363, P391, P403+P233, P405, P501 | |||
Flash point | 122 °C (252 °F; 395 K) | ||
515 °C (959 °F; 788 K) | |||
Lethal dose or concentration (LD, LC): | |||
LD50 (median dose) |
145 mg/kg (rabbit, oral)[6] 130 mg/kg (mouse, oral) 140 mg/kg (rat, oral)[7] | ||
LDLo (lowest published) |
100 mg/kg (mouse, oral)[7] | ||
NIOSH (US health exposure limits): | |||
PEL (Permissible) |
TWA 0.5 mg/m3 [skin][4] | ||
REL (Recommended) |
TWA 0.5 mg/m3 [skin][4] | ||
IDLH (Immediate danger) |
50 mg/m3[4] | ||
Related compounds | |||
Related compounds |
o-Anisidine m-Anisidine | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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