Is stearic acid soluble in dichloromethane?
Contents
Is stearic acid soluble in dichloromethane?
It is a waxy solid and its chemical formula is C17H35CO2H….Stearic acid.
| Names | |
|---|---|
| Solubility in dichloromethane | 3.58 g/100 g (25 °C) 8.85 g/100 g (30 °C) 18.3 g/100 g (35 °C) |
| Solubility in hexane | 0.5 g/100 g (20 °C) 4.3 g/100 g (30 °C) 19 g/100 g (40 °C) 79.2 g/100 g (50 °C) 303 g/100 g (60 °C) |
Why is stearic acid not soluble in water?
The molecule gets over the problem that “oil and water don’t mix” by having a molecule with 2 parts – an oily part and an ionic part. The tail is basically an alkane, and so readily dissolves in fat, oil and grease, but not in water. Thus the tail is said to be hydrophobic (water-hating).
Is stearic acid a solvent or solute?
A stock solution may be made by dissolving the stearic acid in an organic solvent purged with an inert gas. Stearic acid is soluble in organic solvents such as ethanol, DMSO, and dimethyl formamide. The solubility of stearic acid in these solvents is approximately 20, 10, and 30 mg/ml, respectively.
What is the melting point for stearic acid?
69.3 °C
Stearic acid/Melting point
Is stearic acid soluble in water?
Stearic acid is a saturated fatty acid that can deposit on the surface in special conditions. This acid is insoluble in water and soluble in ethanol.
What happens when stearic acid cools?
The graph below shows how liquid stearic acid cools and turns solid. You’ll notice a kink in the graph as it sets. The reason for the kink is that during the change of state, heat energy is released as the stearic acid turns solid.
Does stearic acid dissolve in water?
How to calculate the ester value of saponification?
We multiply by 1, 2 or 3 if we are dealing with mono-, di- or triglycerides. In the case of triglycerides with different fatty acids, it is helpful to also calculate the acid value and the ester value.
Which is the normal proportion of stearic acid?
Chemical reaction will be as follow: C₁₇H₃₅COOH + NaOH ⇒ C₁₇H₃₅COONa + H₂O My question is should I included saponification value for stearic acid or treat this calculation as normal proportion: 284.4772 g/mol – 40 g/mol
Where do I get my saponification values from?
Our saponification values have been gathered primarily from our suppliers and product documentation. In some cases, we have relied upon outside sources. Certain SAP values will differ from those listed in other sources because SAP values can fall within a range of values acceptable for an oil/butter/lipid.
Where does stearic acid in soap come from?
It belongs to class of materials known as fatty acids, produced primarily from natural fats and oils. Stearic acid is an important component in soap and other cosmetic and industrial preparations. Stearic acid is derived predominantly from fats and oils.
https://www.youtube.com/watch?v=DpgmHx-dl1A