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Name	4-Amino-3-hydroxybenzoic acid	EINECS	N/A
CAS No.	2374-03-0	Density	1.492 g/cm³
PSA	83.55000	LogP	1.25380
Solubility	Soluble in chloroform, and aqeous ethanol, water (Partly miscible)	Melting Point	211-215 °C(lit.)
Formula	C₇H₇NO₃	Boiling Point	385.7 °C at 760 mmHg
Molecular Weight	153.137	Flash Point	187.1 °C
Transport Information	N/A	Appearance	yellow-brown to brown crystalline powder
Safety	26-37/39	Risk Codes	36/37/38-22
Molecular Structure		Hazard Symbols	Xn,Xi
Synonyms	(4-Carboxy-2-hydroxyphenyl)amine;3-Hydroxy-4-aminobenzoic acid;3-Hydroxy-PABA;3-Hydroxy-p-aminobenzoic acid;NSC 407243;	Article Data	12

4-Amino-3-hydroxybenzoic acid Chemical Properties

4-Amino-3-hydroxybenzoic acid(2374-03-0) is also named as BENZOIC ACID, 4-AMINO-3-HYDROXY-;4-AMINO-3-HYDROXYBENZOIC ACID;3-HYDROXY-4-AMINOBENZOIC ACID;3-Hydroxy PABA;benzoic acid, 4-amino-3-hydroxy-;CID137566;NSC407243,and so on.

CAS: 2374-03-0
Molecular Formula: C₇H₇NO₃
Molecular Weight: 153.14
Molecular structure:
Melting point: 211-215 °C(lit.)
BRN: 509859
Index of Refraction: 1.691
Molar Refractivity: 39.3 cm³
Molar Volume: 102.6 cm³
Polarizability: 15.57 10^-24cm³
Surface Tension: 83.3 dyne/cm
Density: 1.491 g/cm³
Flash Point: 187.1 °C
Enthalpy of Vaporization: 66.93 kJ/mol
Boiling Point: 385.7 °C at 760 mmHg
Vapour Pressure: 1.22E-06 mmHg at 25°C

4-Amino-3-hydroxybenzoic acid Uses

4-Amino-3-hydroxybenzoic acid(2374-03-0) is commonly used as pharmaceutical intermediate.

4-Amino-3-hydroxybenzoic acid Safety Profile

Hazard Codes: Xn,Xi

Risk Statements: 36/37/38-22 (36/37/38: Irritating to eyes, respiratory system and skin 22: Harmful if swallowed)
Safety Statements: 26-37/39 (26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 37/39: Wear suitable gloves and eye/face protection)
WGK Germany: 3
Hazard Note: Irritant

4-Amino-3-hydroxybenzoic acid Specification

Removal In Wastewater Treatment of 4-Amino-3-hydroxybenzoic acid(2374-03-0) can be stated as follows:
Total removal:1.86 percent
Total biodegradation:0.09 percent
Total sludge adsorption:1.77 percent
Total to Air:0.00 percent
(using 10000 hr Bio P,A,S)

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