L-Menthyl Lactate (CAS 59259-38-0), the L-menthyl ester of lactic acid, is a gentle, long-lasting cooling agent derived from natural L-menthol. Often described as “cooling without the burn”, it delivers a smooth, fresh and persistent cooling sensation of 15 minutes or more — without the sharp, aggressive onset or the camphoraceous odor of pure menthol. It is FEMA 3748 listed and widely used in food, oral care and cosmetic formulations.
L-Menthyl Lactate Specifications
| Parameter | Specification |
|---|---|
| Product Name | L-Menthyl Lactate (Coolact L equivalent) |
| CAS No. | 59259-38-0 |
| FEMA No. | 3748 |
| Chemical Name | L-Menthyl L-lactate (L-Menthol L-lactate) |
| Appearance | White crystalline powder |
| Odor | Slight, faint minty odor |
| Purity | ≥99% (GC, COA available on request) |
| Melting Point | Approx. 43–45°C |
| Solubility | Freely soluble in ethanol and propylene glycol; sparingly soluble in water |
| Packaging | 1 kg foil bag / 25 kg fibre drum (customizable) |
| Shelf Life | 24 months from production date (proper storage) |
Cooling Profile & Sensory Characteristics
Unlike the fast, sharp hit of menthol or WS-series cooling agents, L-Menthyl Lactate provides a soft, progressive cooling effect that builds gently and lasts significantly longer — typically 15 minutes or more on skin and mucous membranes. Because skin enzymes slowly hydrolyze the ester and gradually release L-menthol and lactic acid (a natural moisturizing factor component), the sensation feels natural and comfortable, with no burning, numbness or bitterness at recommended dosages. This makes it the cooling agent of choice for lip care, facial products and delicate food applications where menthol’s harshness is undesirable.
Applications of L-Menthyl Lactate
Food & Confectionery
Candy, chewing gum, beverages — FEMA 3748 listed flavoring with a soft, lingering cool freshness.
Oral Care
Toothpaste, mouthwash, breath fresheners — long-lasting cool without menthol’s burning bite.
Lip & Facial Care
Lip balms, masks, facial lotions — gentle cooling ideal for sensitive-skin formulations.
Body & After-Sun Care
After-sun gels, body lotions, foot care — soothing, persistent cool comfort.
Recommended Use & Dosage
Typical use levels range from 100 to 1,000 ppm in finished products depending on the application and target cooling intensity. In oral care and confectionery, lower dosages (100–350 ppm) already deliver a noticeable effect. L-Menthyl Lactate blends seamlessly with menthol, WS-23 and WS-3 to extend duration and smooth the onset curve. Contact our technical team for precise formulation guidance.
Packaging & Storage
L-Menthyl Lactate is supplied in 1 kg aluminum foil bags and 25 kg fibre drums; custom packing is available on request. Store in a cool, dry place away from direct sunlight, tightly sealed to protect from moisture. When stored properly, the product remains stable for at least 24 months from the production date.
Why Source L-Menthyl Lactate from ZHII?
- Factory-direct supply — we manufacture and export from Xi’an, China, with competitive pricing and stable long-term stock.
- Certified quality — ISO9001 and ISO14001 certified; KOSHER and HALAL certified; COA with every batch.
- Global experience — customers in 50+ countries across the EU, Americas and Asia.
- Flexible quantities — from free samples and 1 kg trial packs to full container loads.
- Technical support — formulation guidance, regulatory documents and application advice.
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