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. It is also the flagship product of our own domain — ws-23.com.
What Is Cooling Agent WS-23 (51115-67-4)?
WS-23 is a white crystalline amide powder with a melting point of about 37 °C. Unlike menthol, it has virtually no aroma and no taste of its own: it simply delivers cooling. This unique neutrality allows WS-23 to be used in any flavor system — fruit, dessert, tobacco, floral or mint — without distorting the profile. It is thermally stable, non-volatile and easy to incorporate into oils, alcohols and glycol systems.
Key Properties of Cooling Agent WS-23
| Property | 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 |
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
Few ingredients cross industry boundaries as easily as WS-23:
Food & Beverage
Beverages, dairy, desserts, candy, gum, sauces and more. WS-23 adds a fresh cool finish while leaving the flavor design completely untouched.
E-Liquids & Vaping
The industry standard cooling agent for e-liquids: odorless, strong and smooth. WS-23 is compatible with virtually every flavor style.
Cosmetics & Personal Care
Skin care, body care, hair care and refresh wipes — WS-23 gives a clean cooling sensation with no scent conflict with fragrance.
Oral Care & Pharma
Toothpaste, mouthwash, topical gels and soothing formulations benefit from its neutral, comfortable cooling.
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. It is also a popular base for cooling-agent blends. 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 cooling agents from Xi’an, China, with competitive pricing and stable long-term stock.
- Certified quality — ISO9001 and ISO14001 certified production; KOSHER and HALAL certified products; a Certificate of Analysis accompanies every batch.
- Global experience — customers in more than 50 countries across the EU, the Americas and Asia trust ZHII as their cooling agent supplier.
- Flexible quantities — from free evaluation samples and small trial packs to full container loads.
- Technical support — our team provides formulation guidance, regulatory documents and application advice.
Frequently Asked Questions
Why is WS-23 so popular?
Because it combines three rare qualities: it is completely odorless, it has no bitterness, and its cooling is strong and long-lasting. No other cooling agent offers this balance, which is why WS-23 leads the market in food, beverage and vaping applications.
What is the melting point of WS-23?
WS-23 melts at approximately 37 °C. In warm climates it can soften slightly, so we recommend cool storage; product quality is not affected.
Does ZHII supply WS-23 with regulatory documents?
Yes. Every batch of WS-23 ships with a COA, and our ISO9001/ISO14001-certified quality system plus KOSHER and HALAL certificates support your compliance needs. Additional documentation is available on request.
Get a Free Sample of Cooling Agent WS-23
Looking for a reliable Cooling Agent WS-23 manufacturer and supplier? ZHII offers high-purity Cooling Agent WS-23 (51115-67-4) with fast worldwide delivery and free samples. Visit our cooling agent powder page to explore the full WS series, or contact us today by email at sxzhiyi@126.com or WhatsApp +86 151 0299 2009 for a quotation within 24 hours.
