Cooling Agent WS-5 (CAS 68489-14-5), chemically known as N-(Ethoxymethyl)-p-menthane-3-carboxamide, is a high-potency synthetic cooling agent widely recognized in the flavor and fragrance industry under the trade name “Koolada.” It delivers an intense, long-lasting cooling sensation without the minty aroma or burning taste of menthol, making it a preferred ingredient for e-liquids, beverages, confectionery, and personal care formulations where clean, neutral cooling is desired.
Cooling Agent WS-5 Specifications
| Parameter | Specification |
|---|---|
| Product Name | Cooling Agent WS-5 (Koolada) |
| CAS No. | 68489-14-5 |
| Chemical Name | N-(Ethoxymethyl)-p-menthane-3-carboxamide |
| Appearance | White crystalline powder |
| Odor | Virtually odorless |
| Purity | ≥99% (typical, COA available on request) |
| Solubility | Freely soluble in ethanol and propylene glycol; low water solubility |
| Packaging | 1 kg foil bag / 25 kg fibre drum (customizable) |
| Shelf Life | 24 months from production date (proper storage) |
Cooling Profile & Sensory Characteristics
WS-5 is characterized by its high-intensity, long-duration cooling effect. The sensation kicks in with a smooth onset, peaks at a strong cool intensity, and persists significantly longer than menthol or WS-3. Unlike menthol, WS-5 contributes no minty odor or bitterness at recommended use levels, which means it can be layered into any flavor system — from fruity and floral to savory — without altering the intended taste profile. The cooling is clean, comfortable, and remarkably potent on a per-gram basis, making WS-5 one of the most cost-effective cooling agents available.
Applications of Cooling Agent WS-5
E-Liquids & Vaping
WS-5 (Koolada) is one of the most popular cooling agents for e-liquid formulations. It delivers a strong, smooth throat-cooling hit that enhances the vaping experience without adding menthol flavor.
Food & Beverage
Sparkling water, energy drinks, iced teas, dairy products, candies and chewing gum. WS-5 adds a fresh, clean cooling finish to food and beverage products.
Oral Care
Toothpaste, mouthwash and breath fresheners. WS-5 provides a long-lasting cooling sensation that extends the freshness perception after use.
Cosmetics & Personal Care
Lotions, creams, after-sun products and body care formulations. WS-5 delivers a gentle, persistent cooling that consumers perceive as premium quality.
Recommended Use & Dosage
WS-5 is a high-potency cooling agent and is typically dosed at very low ppm levels — often lower than WS-3 due to its greater cooling strength per unit weight. Formulators should start conservatively and adjust upward after sensory testing. For e-liquid applications, WS-5 is frequently blended with WS-23 for a layered cooling curve: WS-23 provides the initial burst while WS-5 carries the long-lasting tail. Contact ZHII’s technical team for recommended starting formulations.
Packaging & Storage
Cooling Agent WS-5 is typically 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 the powder from moisture. When stored properly, the product remains stable for at least 24 months from the production date.
Why Source Cooling Agent WS-5 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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