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What is palmitic acid stearic acid-anhydride
**Introduction to Palmitic Acid Stearic Acid Anhydride** Palmitic Acid Stearic Acid Anhydride is a versatile fatty acid derivative formed by the condensation of palmitic acid (C16:0) and stearic acid (C18:0). This anhydride exhibits excellent hydrophobic properties, making it valuable in industrial applications such as lubricants, coatings, and surfactants. Its high thermal stability and compatibility with organic matrices enhance its use in polymer modification, emulsifiers, and personal care formulations. Additionally, it serves as an intermediate in synthesizing esters, waxes, and specialty chemicals. With its balanced composition of saturated fatty acids, this anhydride ensures improved texture, stability, and water resistance in end products, catering to diverse sectors including cosmetics, pharmaceuticals, and plastics.
Preparation Process: To prepare palmitic acid stearic acid-anhydride, follow these steps: 1. **Mixing**: Combine equimolar amounts of palmitic acid and stearic acid in a dry, round-bottom flask. 2. **Dehydrating Agent**: Add a slight excess of acetic anhydride (1.2 equivalents) as a dehydrating agent. 3. **Reaction**: Heat the mixture at 60–70°C under reflux for 2–3 hours with stirring under anhydrous conditions (e.g., nitrogen atmosphere). 4. **Removal of Byproducts**: Distill off the formed acetic acid and excess acetic anhydride under reduced pressure. 5. **Purification**: Recrystallize the crude product from a nonpolar solvent (e.g., hexane) to obtain pure palmitic-stearic anhydride.
Usage Scenarios: Palmitic acid stearic acid-anhydride is a mixed anhydride derived from palmitic and stearic acids, commonly used in organic synthesis as an acylating agent to introduce long-chain fatty acid groups into molecules. It is employed in the production of esters, waxes, and surfactants, enhancing hydrophobicity and stability in formulations. In pharmaceuticals, it aids in drug delivery systems by modifying solubility and release properties. The compound also serves as an intermediate in synthesizing lubricants, plasticizers, and emulsifiers for industrial applications. Additionally, it is utilized in cosmetics and personal care products to improve texture and moisture retention. Its reactivity makes it valuable in lipid research and biochemical studies.
palmitic acid stearic acid-anhydride Basic Info
palmitic acid stearic acid-anhydride Price
1. **United States**: $2.50 - $4.50 per kg
2. **China**: $1.80 - $3.20 per kg
3. **Russia**: $2.00 - $3.50 per kg
4. **Germany**: $2.80 - $4.20 per kg
5. **India**: $1.50 - $2.80 per kg
6. **Japan**: $3.00 - $5.00 per kg
7. **Brazil**: $2.20 - $3.80 per kg
8. **South Korea**: $2.50 - $4.00 per kg
9. **Philippines**: $2.00 - $3.50 per kg
10. **United Kingdom**: $2.70 - $4.50 per kg
11. **France**: $2.80 - $4.30 per kg
12. **Mexico**: $2.10 - $3.60 per kg
13. **Canada**: $2.60 - $4.40 per kg
14. **South Africa**: $2.00 - $3.50 per kg
15. **Egypt**: No results
16. **Turkey**: $2.20 - $3.70 per kg
17. **Thailand**: $1.90 - $3.30 per kg
18. **Indonesia**: $1.80 - $3.20 per kg
These are approximate ranges and may vary depending on the supplier, quantity, and market conditions.
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