What is the pKa of P aminobenzoic acid?
What is the pKa of P aminobenzoic acid?
4.77
Structure for FDB001037 (4-Aminobenzoic acid)
| Property | Value | Source |
|---|---|---|
| logP | 0.8 | ChemAxon |
| logS | -1.5 | ALOGPS |
| pKa (Strongest Acidic) | 4.77 | ChemAxon |
| pKa (Strongest Basic) | 2.69 | ChemAxon |
What is the pH of P aminobenzoic acid?
At both pH 3.0 and pH 7.0, PABA potentiated the formation of the thymine dimer in aqueous solutions of thymine irradiated with light above 300 nm.
Is PABA acid or base?
The para-aminobenzoic acid (PABA) product is an amphoteric component that has three forms in an aqueous solution. PABA can titrate with strong acid or a strong base. The conjugated acid of PABA can ionize in two sections, and two peaks can be detected to overlap.
Is 4 aminobenzoic acid an acid or a base?
4-aminobenzoic acid is an aminobenzoic acid in which the amino group is para to the carboxy group. Aminobenzoic Acid is an organic acid with UV absorption and antifibrotic properties.
Is 4 aminobenzoic acid polar?
Information on this page: Normal alkane RI, non-polar column, custom temperature program. References.
Is 4 aminobenzoic acid soluble?
p-Aminobenzoic acid, also known as 4-aminobenzoic acid or PABA, is an organic compound with molecular formula C7H7NO2. PABA is a white crystalline substance that is only slightly soluble in water. It consists of a benzene ring substituted with an amino group and a carboxylic acid.
What is the pKa of benzocaine?
Benzocaine is a unique local anesthetic because it does notcontain a tertiary amine. The pKa of the aromatic amine is 3.5ensuring that benzocaine is uncharged at physiological pH.
Is PABA a carboxylic acid?
Where do bacteria get PABA?
PABA is an intermediate in the synthesis of folate by bacteria, plants, and fungi. Many bacteria, including those found in the human intestinal tract such as E. coli, generate PABA from chorismate by the combined action of the enzymes 4-amino-4-deoxychorismate synthase and 4-amino-4-deoxychorismate lyase.
Is P-aminobenzoic acid soluble in water?
The solubility of PABA is 6.1 g/l at 30oC in water, 125 g/l alcohol and 17 g/l ether. PABA is soluble in ethyl acetate and glacial acetic acid, slightly soluble in benzene, and practically insoluble in petroleum ether. PABA is known as a sunscreen agent in cosmetics. It absorbs UVB radiation strongly.
What is the pKa for acetic acid?
4.75
Ionization Constants of Heteroatom Organic Acids
| Common Name | Formula | pKa |
|---|---|---|
| formic acid | HCO2H | 3.75 |
| ascorbic acid | 4.17 11.6 | |
| benzoic acid | C6H5CO2H | 4.20 |
| acetic acid | CH3CO2H | 4.75 |
What is the Iupac name for benzocaine?
Benzocaine is an ester, a compound made from the organic acid PABA (para-aminobenzoic acid) and ethanol….3D Structure for HMDB0004992 (Benzocaine)
| Value | Source |
|---|---|
| Ethyl aminobenzoate | ChEBI |
| Ethyl p-aminobenzoate | ChEBI |
| Ethyl p-aminophenylcarboxylate | ChEBI |
| p-(Ethoxycarbonyl)aniline | ChEBI |
