Does stearic acid react with 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.
How soluble is stearic acid in water?
Stearic acid
| Names | |
|---|---|
| Boiling point | 361 °C (682 °F; 634 K) decomposes 232 °C (450 °F; 505 K) at 15 mmHg |
| Solubility in water | 0.00018 g/100 g (0 °C) 0.00029 g/100 g (20 °C) 0.00034 g/100 g (30 °C) 0.00042 g/100 g (45 °C) 0.00050 g/100 g (60 °C) |
| Solubility | Soluble in alkyl acetates, alcohols, HCOOCH3, phenyls, CS2, CCl4 |
Why is stearic acid insoluble in water?
Stearic acid has the following structure: While the carboxylic group makes stearic acid soluble in water due to the potential hydrogen bonding and its polar character, the long hydrocarbon chain is hydrophobic and repels the water molecules to the extent that the compound is insoluble in water.
How do you mix stearic acid with water?
You can try to dissolve it in hot purified water (but it’ll be dissolved according to its conc. (limited solubility)). Use of a non-ionic surfactant (mix the stearic acid with neat surfactant such as Nonidet P42) and the stearic acid can be ‘solubilized’ in water.
Does citric acid dissolve in water?
Water
AlcoholDimethyl sulfoxideAcetoneEthyl acetate
Citric acid/Soluble in
Is stearic acid bad for you?
Stearic Acid Safety Whole Foods has deemed the ingredient acceptable in its body care quality standards, and studies show the ingredient is not a skin irritant. The Cosmetics Ingredient Review has deemed stearic acid as safe for use in cosmetics.
Is stearic acid toxic?
May be harmful if absorbed through the skin. Ingestion: May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated. Aspiration of material into the lungs may cause chemical pneumonitis, which may be fatal.
What does stearic acid do to the human body?
Stearic Acid is used to stabilize formulations and it gives products a smooth, satiny feel making it a great ingredient choice for creams and lotions. But since it is also a fatty acid, it also helps to rebuild the skin’s barrier in a similar way as ceramides too.
What does citric acid do to water?
Citric acid’s ability to chelate metals makes it useful in soaps and laundry detergents. By chelating the metals in hard water, it lets these cleaners produce foam and work more efficiently without the need for water softening.
What is the pH of citric acid in water?
As with most organic acids, citric acid is a weak acid, with a pH level between 3 and 6.
Is stearic acid a carcinogen?
Among all nutrients evaluated, intake of stearic acid had the most impact and was associated with an increased risk of prostate cancer. Every 20% increased intake of stearic acid (with the intake increasing from one quintile to the next quintile) was associated with a 23% increased risk of prostate cancer.
Is stearic acid healthy?
Stearic acid is considered a healthy saturated fat and does not appear to raise your risk of heart disease. This held true even in a 40-day study in people whose stearic acid intake constituted up to 11% of their total calorie intake ( 9 ).