4-Aminobenzoic acid
Properties
- Molecular formula
- C7H7NO2
- Molar mass
- 137.14 g/mol
- Exact mass
- 137.0477 Da
- Density
- 1.37 g/mL
- Melting point
- 188.5 °C
- Boiling point
- 200 °C (at 10 Torr)
- pKa
- 2.38 (25 °C), 4.85 (25 °C)
- Water solubility
- 5.39 g/L (25 °C)
- logP
- 0.97Crippen estimate
- Polar surface area
- 63.3 Ų
- H-bond donors / acceptors
- 2 / 2
- Rotatable bonds
- 1
Hazards
Warning
- H315 Causes skin irritation32.2% of notifiers
- H317 May cause an allergic skin reaction27.7% of notifiers
- H319 Causes serious eye irritation33.1% of notifiers
- H335 May cause respiratory irritation32.2% of notifiers
- H412 Harmful to aquatic life with long lasting effects44.6% of notifiers
Aggregated from 242 ECHA notifications, via PubChem; a share says how many notifiers assign that statement.
Precautionary statements
P261, P264, P264+P265, P271, P272, P273, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P333+P317, P337+P317, P362+P364, P403+P233, P405, P501
Identifiers
CAS number
150-13-0SMILES
Nc1ccc(C(=O)O)cc1InChIKey
ALYNCZNDIQEVRV-UHFFFAOYSA-NInChI
InChI=1S/C7H7NO2/c8-6-3-1-5(2-4-6)7(9)10/h1-4H,8H2,(H,9,10)Weigh it out
Type any one amount. The others follow from the molar mass and density.
Names and synonyms
33 names · show all
- Benzoic acid, 4-amino-
- Benzoic acid, p-amino-
- Amben
- p-Aminobenzoic acid
- Anticanitic vitamin
- Chromotrichia factor
- anti-Chromotrichia factor
- PABA
- Paraminol
- Trichochromogenic factor
- Vitamin BX
- Vitamin H'
- p-Carboxyaniline
- Paranate
- p-Carboxyphenylamine
- 4-Carboxyaniline
- PAB
- Hachemina
- Pabacyd
- Pabafilm
- Pabamine
- Romavit
- Aniline-4-carboxylic acid
- Sunbrella
- Antichromotrichia factor
- Anticantic vitamin
- Bacterial vitamin H1
- NSC 7627
- 4-Carboxyphenylamine
- Actipol
- 4-Aminobenzenecarboxylic acid
- p-Aminobenzenecarboxylic acid
- para-Aminobenzoates
Work with 4-Aminobenzoic acid
Stereoisomers, salts and isotopologues
The same compound in another form: other stereochemistry, a salt or hydrate, the free acid or base, or an isotope-labelled version.
Similar compounds
Terephthalic acid100-21-071 % similar
6-Amino-2-naphthoic acid116668-47-466 % similar
Tetrakis(4-carboxyphenyl)ethylene1351279-73-663 % similar
[P-Terphenyl]-4,4''-dicarboxylic acid13653-84-463 % similar
[1,1′-Biphenyl]-4,4′-dicarboxylic acid787-70-263 % similar
3,5-Diaminobenzoic acid535-87-562 % similar
4-(Aminocarbonyl)benzoic acid6051-43-062 % similar
3,5-Dicarboxyaniline99-31-062 % similar
Tanimoto similarity of circular fingerprints over the whole catalogue.