Cooling Agent WS-2 (CAS 51115-71-0) is an odorless, white crystalline cooling powder belonging to the same isomer family as WS-23. It delivers a clean, neutral physical cooling effect with virtually no taste of its own — exactly what formulators need when cooling must be added without changing a delicate flavor system.
Cooling Agent WS-2 Specifications
| Parameter | Specification |
|---|---|
| Product Name | Cooling Agent WS-2 |
| CAS No. | 51115-71-0 |
| 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-2 produces a fresh, rounded cooling sensation with a smooth onset and medium duration. Because it has no bitterness and no cooling tail of its own, it layers beautifully with other cooling agents. It remains stable during heat processing and has excellent shelf stability in finished products.
Applications of Cooling Agent WS-2
Food & Beverage
Ready-to-drink beverages, sparkling water, dairy, desserts, candy, gum — adds a fresh, cool finish.
Oral Care
Toothpaste, mouthwash, breath strips — extends cooling without aggressive menthol burn.
Cosmetics & Personal Care
Lotions, creams, aftershave, foot care — provides gentle, soothing cooling without irritation.
E-Liquids & Vaping
Smooth physical cooling in e-liquid formulations, compatible with all flavor systems.
Recommended Use & Dosage
WS-2 is normally dosed at low ppm levels depending on the matrix and target intensity. Because it is bitterness-free, it tolerates relatively high dosing. Contact ZHII for recommended starting levels.
Packaging & Storage
Cooling Agent WS-2 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-2 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.
Request a Free Sample of Cooling Agent WS-2
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