Oleic Acid
ELFATTM – OLA75
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Oleic acid is a monounsaturated fatty acid found in various plant oils (like olive and canola) and animal fats, commonly used in cooking, cosmetics, and industrial applications. It offers…
CAS Number
112-80-1
HS Code
38.23.12.00
INCI Name
Oleic Acid
Molecular Formula
C₁₈H₃₄O₂
Oleic Acid
ELFATTM – OLA75
Oleic acid is a monounsaturated fatty acid found in various plant oils (like olive and canola) and animal fats, commonly used in cooking, cosmetics, and industrial applications. It offers cardiovascular and anti-inflammatory benefits, making it valuable for both health and…
CAS Number
112-80-1
INCI Name
Oleic Acid
HS Code
38.23.12.00
Molecular Formula
C₁₈H₃₄O₂
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Product Specification
Physical Properties
| Property | Specification |
|---|---|
| Appearance | Colorless to pale yellow liquid |
| Odor | Peculiar lard-like odor |
| Molecular Weight (G/Mol) | 282.5 |
| Density Or Specific Gravity | 0.89 at 77 °F |
| Viscosity | 25.6 cP at 30 °C |
| Refractive Index | 1.463 at 18 °C/D; 1.4585 at 26 °C/D |
| Density | 0.89 at 77 °F |
Chemical Properties
| Property | Specification |
|---|---|
| Pka | 5.02 in aqueous solution at 25 °C |
| Hazardous Reactions | When heated to decomposition it emits acrid smoke and irritating fumes. |
Thermal Properties
| Property | Specification |
|---|---|
| Melting Point | 61.3 °F |
| Boiling Point | 547 °F at 100 mmHg |
| Flash Point | 372 °F |
| Autoignition Temperature | 685 °F |
Processing Methods & Reference Formulations
A. Cosmetic cream
Incorporate Oleic Acid during the oil phase preparation to ensure proper solubilization with other lipids or oils. Oleic Acid can affect emulsion stability and pH. Use a compatible non-ionic or anionic emulsifier and maintain pH above 5 to avoid irritation.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Water | 65% |
| Glycerin | 5% |
| Oleic Acid | 3% |
| Stearic Acid | 5% |
| Cetyl Alcohol | 4% |
| Mineral Oil | 6% |
| Triethanolamine | 1% |
| Dimethicone | 2% |
| Phenoxyethanol | 1% |
| Carbomer | 1% |
| Tocopheryl Acetate | 1% |
| Fragrance | 0.5% |
| Disodium EDTA | 0.5% |
B. Shampoo
Oleic Acid can be added to the oil phase or at cool-down stage if the formulation is surfactant-based, ensuring proper dispersion and minimizing oxidation. Use with non-ionic or mild anionic emulsifiers to help solubilize Oleic Acid and maintain emulsion stability in the aqueous system.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Water | 60% |
| Sodium Laureth Sulfate | 12% |
| Cocamidopropyl Betaine | 8% |
| Oleic Acid | 5% |
| Glycerin | 3% |
| Glycol Distearate | 2% |
| Polyquaternium-10 | 0.5% |
| Citric Acid | 0.2% |
| Fragrance | 0.3% |
| Preservative (e.g., DMDM Hydantoin) | 0.5% |
| Sodium Chloride | 2% |
| Panthenol | 1% |
| Guar Hydroxypropyltrimonium Chloride | 0.5% |
| Disodium EDTA | 0.2% |
C. Soap
Include Oleic Acid in the oil blend before saponification. It reacts with alkali (NaOH or KOH) to form sodium or potassium oleate. Since Oleic Acid produces a softer soap, balance it with harder fats/oils like coconut oil, palm oil, or stearic acid to improve bar firmness and longevity.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Oleic Acid | 20% |
| Stearic Acid | 11% |
| Potassium Hydroxide | 11% |
| Olive Oil | 4% |
| Coconut Oil | 14% |
| Water (balance) | ~40% |
| Sodium Chloride | <4% |
| Citric Acid (pH adjust) |
D. Detergent
Combine with surfactants like SLS, LABSA, or soap noodles to improve emulsifying capacity and tailor the detergent’s fatty acid profile. Ensure neutralization is done between pH 8–10 to form stable soap without over-alkalizing the formula.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Water | 62% |
| Citric Acid Monohydrate | 10% |
| Sodium Lauryl Sulfate | 8% |
| Linear Alkylbenzene Sulfonate (LABS) | 8% |
| Ethanol | 4% |
| Propanediol | 2% |
| Oleic Acid | 2% |
| Alkylbenzene Sulfonate | 3% |
| Polyvinylpyrrolidone (PVP) | 1% |
| Diethylene Triamine Penta(Methylene Phosphonic Acid) | 0.2% |
| Enzymes (e.g., Lipase, Protease) | 0.8% |
Dosing Guidelines
A. Dosing by Application
| Products | Authorized dosage |
|---|---|
| Face, Body, Hand Skin Care | 1-10% |
| Shampoos | 5-15% |
About Oleic Acid
About Oleic Acid
Regulatory Compliance
| Region | Max Allowed Level | Notes | Certification Body |
|---|---|---|---|
| Australia | - | No explicit national restriction; follows international safety assessments and EU/CIR guidance | - |
| China | - | No explicit max for cosmetics. | - |
| Japan | - | No explicit national restriction; aligns with international safety standards and CIR recommendations. | - |
| Korea, Republic of | - | Not specifically restricted. | - |
| United States | - | Oleic acid is considered safe as used in cosmetics by the Cosmetic Ingredient Review (CIR). No specific FDA restriction. | FDA |
| ASEAN | - | ASEAN Cosmetic Directive references international safety standards; no explicit limit for oleic acid. | - |
| European Union | - | Not specifically restricted. | - |
FAQs - Oleic Acid
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