Cooling Agent WS-23 (CAS 51115-67-4), chemically N,2,3-Trimethyl-2-isopropylbutanamide, is the most versatile and fastest-growing cooling agent in the WS family. Completely odorless and tasteless, with no bitterness and a smooth, powerful cooling effect, WS-23 has become the default choice for formulators who want pure physical cooling without any sensory side effects.
Cooling Agent WS-23 Specifications
| Parameter | Specification |
|---|---|
| Product Name | Cooling Agent WS-23 |
| CAS No. | 51115-67-4 |
| Chemical Name | N,2,3-Trimethyl-2-isopropylbutanamide |
| Appearance | White crystalline powder |
| Odor | Virtually odorless and tasteless |
| Purity | ≥99% (typical, COA available on request) |
| Melting Point | Approx. 37°C |
| 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-23 delivers a strong, well-rounded cooling sensation with a medium onset and excellent duration. The effect is smooth and comfortable, without the sharpness or burning associated with menthol, and with essentially zero bitterness at normal dosages. Its combination of strength, cleanliness and neutrality is the reason WS-23 is now the most widely specified cooling agent across food, beverage, cosmetic and vaping applications.
Applications of Cooling Agent WS-23
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
Typical use levels for WS-23 range from about 30 to 100 ppm in finished products, varying by application and target intensity. Contact our technical team for precise formulation recommendations.
Packaging & Storage
Cooling Agent WS-23 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-23 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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