Methyl 4-aminobenzoate
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Methyl 4-aminobenzoate
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CAS No:
619-45-4
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Formula:
C8H9NO2
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Chemical Name:
Methyl 4-aminobenzoate
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Synonyms:
Benzoic acid,4-amino-,methyl ester;Benzoic acid,p-amino-,methyl ester;Methyl p-aminobenzoate;4-Aminobenzoic acid methyl ester;Methyl 4-aminobenzoate;p-Aminobenzoic acid methyl ester;p-Carbomethoxyaniline;4-(Methoxycarbonyl)aniline;Methyl aniline-4-carboxylate;p-(Methoxycarbonyl)aniline;4-(Carbomethoxy)aniline;Methyl 4-aminophenylcarboxylate;(4-(Methoxycarbonyl)phenyl)amine;NSC 3783;4-Aminobenzenecarboxylic acid methyl ester
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CAS No:
Characteristics
52.3
1.4
White to beige Crystals or Crystalline Powder
1.2±0.1 g/cm3
110-111 °C
299.2°C at 760 mmHg
154.9±17.4 °C
1.566
soluble in alcohol and ether. Slightly soluble in water.
Store below +30°C.
Peritoneal-mouse LD50: 237 mg/kg
Flammable; burning produces toxic nitrogen oxides and hydrogen chloride fumes
Safety Information
NONH for all modes of transport
3
36/37/38-20/21/22
26-37/39-36/37/39
DG2900000
Xi,Xn
Warehouse ventilated, low temperature and dry
Stable under normal temperatures and pressures.
P261-P305 + P351 + P338
H315-H319-H335
|Warning|H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 44 companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Methyl 4-aminobenzoate Use and Manufacturing
It is derived from the esterification of p-nitrobenzoic acid with methanol and then reduction with iron powder. Heat p-nitrobenzoic acid, methanol and sulfuric acid together, and reflux for esterification for 6-8h. After the methanol is recovered, the ester compound is poured into ice water for crystallization, filtered, and washed with water, sodium hydroxide solution, and water successively to obtain methyl p-nitrobenzoate. Add it to the mixture of hydrochloric acid, iron powder and water, and heat it to boil slightly for about 0.5h. Cool, filter, extract with benzene, recover benzene to obtain a crude product, and then recrystallize with methanol to obtain methyl para-aminobenzoate.
Used as dye intermediate
Benzoic acid, 4-amino-, methyl ester: ACTIVE
Computed Properties
Molecular Weight:151.16
XLogP3:1.4
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:3
Rotatable Bond Count:2
Exact Mass:151.063328530
Monoisotopic Mass:151.063328530
Topological Polar Surface Area:52.3
Heavy Atom Count:11
Complexity:139
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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