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Lactic Acid Dodecyl Ester (also called dodecyl lactate or lauryl lactate) is an organic ester formed by reacting lactic acid (from fermentation) with dodecanol (lauryl alcohol, often from coconut/palm oil).
Formula: C₁₅H₃₀O₃
Structure: CH₃CH(OH)COO(CH₂)₁₁CH₃
Properties: Colorless/pale yellow liquid, mild odor, emollient (softens skin), oil-soluble, biodegradable, low toxicity.
Key Uses:
Cosmetics/Skincare: Emollient, moisturizer, solubilizer (improves texture & spreadability).
Pharmaceuticals: Penetration enhancer in topical drugs.
Industry: "Green" solvent for inks, resins; plasticizer for biopolymers.
Origin: Derived from renewable resources.
CAS: 6283-92-7.
Lactic Acid Dodecyl Ester (systematically named dodecyl lactate or lauuryl lactate) is an organic ester formed from lactic acid and dodecanol (lauryl alcohol). Here's a concise chemical overview:
CH3CH(OCOC12H25)COOH or CH3CH(OH)C(=O)OC12H25CH3CH(OH)C(=O)OC12H25(Hydroxyl group retained from lactic acid; ester bond formed with dodecanol).
Formula: C15H30O3CX15HX30OX3
Molar Mass: 258.40 g/mol.
Key Properties:
Pale yellow to colorless liquid, typically with a mild odor.
Hydrophobic (oil-soluble) but retains slight water affinity due to its free hydroxyl group.
Biodegradable and considered a "green" solvent/emollient.
Low toxicity (skin-friendly; LD₅₀ > 2000 mg/kg in rats).
Synthesis:
Esterification reaction:
CH3CH(OH)COOH+HO(CH2)11CH3→CH3CH(OH)COO(CH2)11CH3+H2OCHX3CH(OH)COOH+HO(CHX2)X11CHX3---->CHX3CH(OH)COO(CHX2)X11CHX3+HX2O
(Catalyzed by acid/enzymes, often under heat).
Applications:
Cosmetics/skincare: Emollient, solubilizer, and moisturizer (improves skin feel).
Pharmaceuticals: Penetration enhancer in topical formulations.
Industrial solvent: For resins, dyes, and agrochemicals.
Food industry: Indirect use via packaging (plasticizer for biopolymers).
CAS Number: 6283-92-7
Safety: Generally non-irritating; biodegradable. Avoid eye contact.
In short: A biocompatible ester derived from renewable resources (lactic acid + coconut/palm alcohol), valued in cosmetics for its emollient properties and in industry as a mild, sustainable solvent.
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