What is the boiling point of ethyl 4 Aminobenzoate?
591.3°F (310.7°C)Benzocaine / Boiling point
What temperature does benzocaine melt at?
Benzocaine is a colorless trapezial crystal. Its melting point is 92℃ (88-90℃), boiling point is 183-184°C (1.87kPa).
Is methyl 4 aminobenzoate soluble in water?
Methyl 4-aminobenzoate Properties Soluble in alcohol and ether. Slightly soluble in water.
Is 4-aminobenzoic acid soluble in water?
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.
Is ethyl 4 Aminobenzoate toxic?
May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. May be harmful if absorbed through the skin. Ingestion: May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.
Is ethyl 4 Aminobenzoate polar?
The ethyl-4-aminobenzoate is similar to benzoic acid, in that it has a nonpolar ring and has polar attachments. The nonpolar ring is what makes it soluble in diethyl ether.
Does benzocaine dissolve in water?
Benzocaine is only slightly soluble in water. In the Merck Index (Merck & Co. 1989), its solubility is reported as 400 mg/L.
Is benzocaine soluble in methanol?
QUICK LINKS. Benzocaine is a surface anesthetic that reversibly inactivates voltage-dependent sodium channels. Solubility : Soluble in water (0.4 mg/ml at 20° C), methanol, chloroform (500 mg/ml), ethanol (50 mg/ml), and ether (250 mg/ml).
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. It has a role as an Escherichia coli metabolite, a plant metabolite and an allergen. It derives from a benzoic acid. It is a conjugate acid of a 4-aminobenzoate.
What is the pH of p-Aminobenzoic acid?
pH 3.0 and pH 7.0
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 benzocaine soluble in water?
What is the structure of ethyl 4 Aminobenzoate?
C9H11NO2Benzocaine / Formula
How do you dissolve benzocaine powder?
It is very slightly soluble in water (1 in 2,500) and freely soluble in alcohol (1 in 5-8) and ether (1 in 4). Benzocaine is sparingly soluble in almond and olive oil (1 in 30-50), and it will dissolve in dilute acids. It should be protected from light and stored in tight containers.
What is the pH of benzocaine?
The HCl salt of benzocaine can be prepared as a stock solution of 100 g/L, which should be stored in a dark container and protected from light. As with tricaine, benzocaine should be buffered with sodium bicarbonate to raise the pH to 7.0–7.5.
Is ethyl 4 Aminobenzoate acidic?
Ethyl 4-aminobenzoate was found to be insoluble in water and 1.0 M NaOH, but upon addition of 6.0 M NaOH to this solution, ethyl 4-aminobenzoate became insoluble….Is ethyl 4 Aminobenzoate basic or acidic?
| Names | |
|---|---|
| Solubility in water | 20 g/100 mL |
Why benzoate ion is more stable than benzoic acid?
The negative charge of the ion is concentrated on the oxygen. This increases that oxygen s attraction for protons in comparison to the benzoate ion. Because of resonance stabilization the benzoate ion is more stable than the 2-naphthalate ion making its parent acid, benzoic a stronger acid.
Is PABA water soluble?
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.
Is ethyl 4 Aminobenzoate polar or nonpolar?
What is the CAS number for methyl 4-aminobenzoate?
Methyl 4-aminobenzoate. CAS Number. 619-45-4. Molecular Weight. 151.163. Density. 1.2±0.1 g/cm3. Boiling Point.
What is the molecular weight of 4-aminobenzoic acid?
4-Aminobenzoic acid. CAS Number. 150-13-0. Molecular Weight. 137.136. Density. 1.3±0.1 g/cm3. Boiling Point. 339.9±25.0 °C at 760 mmHg.
What is the temperature of 4 aminobenzoic acid?
187-189 °C (lit.) 187-189 °C (lit.) 4-Aminobenzoic acid is an intermediate in the synthesis of folate by bacteria, plants, and fungi. 4-Aminobenzoic acid is an intermediate in the synthesis of folate by bacteria, plants, and fungi. 187-189 °C (lit.)
What is 4-aminobenzoate?
4-aminobenzoate is an aromatic amino-acid anion that is the conjugate base of 4-aminobenzoic acid. It has a role as an Escherichia coli metabolite, a plant metabolite and a Saccharomyces cerevisiae metabolite.