What is the melting point of acetylsalicylic acid?
275°F (135°C)Aspirin / Melting point
What is the melting point of 100% pure salicylic acid?
Salicylic acid
| Names | |
|---|---|
| Appearance | Colorless to white crystals |
| Odor | Odorless |
| Density | 1.443 g/cm3 (20 °C) |
| Melting point | 158.6 °C (317.5 °F; 431.8 K) |
Why salicylic acid has higher melting point than aspirin?
Salicylic acid forms intra hydrogen bonding so it is not capable of forming hydrogen bonds with water, whereas the aspirin contains a carboxylic group free to form hydrogen bond with water so becomes more soluble.…
What is the properties of acetylsalicylic acid?
Properties of Aspirin/Acetylsalicylic acid – C9H8O4
| C9H8O4 | Acetylsalicylic acid |
|---|---|
| Molecular Weight/ Molar Mass | 180.159 g/mol |
| Density | 1.40 g/cm³ |
| Boiling Point | 140°C |
| Melting Point | 136°C |
What is the boiling point of pure aspirin?
Predicted data is generated using the ACD/Labs Percepta Platform – PhysChem Module
| Density: | 1.3±0.1 g/cm3 |
|---|---|
| Boiling Point: | 321.4±25.0 °C at 760 mmHg |
| Vapour Pressure: | 0.0±0.7 mmHg at 25°C |
| Enthalpy of Vaporization: | 59.5±3.0 kJ/mol |
| Flash Point: | 131.2±16.7 °C |
What is the difference between salicylic acid and acetylsalicylic acid?
Aspirin vs salicylic acid Aspirin is acetylsalicylic acid, which sounds a lot like salicylic acid, a beta hydroxy acid that’s great for exfoliation, with anti-irritant and anti-bacterial properties that make it great for acne-prone skin. The big difference is in the “acetyl”.
Is acetylsalicylic acid a liquid at room temperature?
It’s soluble in water. 3g of Aspirin can dissolve in 1 liter of water. It is a white crystalline solid at room temperature. It is weakly acidic in nature.
What is the pH of acetylsalicylic acid?
Aspirin (acetylsalicylic acid) has a pKa of 2.97 Calculate the percentage of aspirin (acetylsalicylic acid) available for absorption in the stomach (pH = 2.0) and in the duodenum at (pH = 4.5).
Is acetylsalicylic acid soluble in water?
It has a limited solubility in water, which amounts to 2–4 mg/mL and its solubility varies significantly with temperature [1]. Aspirin is more soluble in ethanol, ethyl ether, chloroform, sodium hydroxide solution, and sodium carbonate solution than in water.
Why acetylsalicylic acid is used instead of salicylic acid?
Because of its bitter taste, chemical derivatives of salicylic acid (2-hydroxybenzoic acid) were synthesized and tested. Acetylsalicylic acid (aspirin) eliminated the bitter taste but retained the anti-inflammatory action, and it was introduced for treating human maladies >100 years ago.
What increases melting point?
If, as observed in most cases, a substance is more dense in the solid than in the liquid state, the melting point will increase with increases in pressure.
Is aspirin solid at room temperature?
Properties of Aspirin Its boiling point is 140 ℃. It’s soluble in water. 3g of Aspirin can dissolve in 1 liter of water. It is a white crystalline solid at room temperature.
Can aspirin dissolve in water?
Aspirin is slightly soluble in water: the solubility of aspirin in water is 0.33 grams per 100 mL water at room temperature.