Cooling agent WS-2 (CAS 51115-71-0) is an odorless, white crystalline cooling powder belonging to the same isomer family as the popular 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. This article explains WS-2’s properties, applications and how to buy it factory-direct from ZHII.
What Is Cooling Agent WS-2 (51115-71-0)?
WS-2 is part of the trimethyl-isopropylbutanamide cooling agent family (its CAS number 51115-71-0 sits in the same series as WS-23 and WS-27). Like its relatives, WS-2 activates the cold receptors rather than evaporating like menthol, which gives it long-lasting, stable cooling and excellent flavor neutrality. It is especially valued in applications where any minty note would be unwanted — for example delicate fruit flavors, dairy desserts and fine confectionery.
Key Properties of Cooling Agent WS-2
| Property | 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 |
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: many flavor houses blend WS-2 with faster-hitting agents to create a cooling curve that starts quickly and lasts. It remains stable during heat processing and has excellent shelf stability in finished products.
Applications of Cooling Agent WS-2
Typical applications of WS-2 include:
Confectionery & Chewing Gum
Candy, gummies, compressed mints and gum bases where a clean, sugar-compatible cooling effect is required without menthol flavor drift.
Beverages
Flavored water, energy drinks, soft drinks and dairy beverages. WS-2 adds freshness while keeping the original flavor profile untouched.
Oral Care
Mouthwash and toothpaste systems that combine WS-2 with traditional mint flavors to extend the cooling impression.
Flavor Compounds
Flavor houses use WS-2 as a neutral cooling carrier inside compounded flavors for food and beverage manufacturers.
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 compared with older cooling agents. Contact ZHII for recommended starting levels for your application.
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 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
What is the difference between WS-2 and WS-23?
WS-2 and WS-23 are closely related isomers from the same chemical family. Both are odorless and bitterness-free; the practical difference lies in the fine nuance of their cooling curve. Many customers evaluate both side by side and choose — or blend them — based on their target sensory profile.
Does WS-2 have any taste or smell?
No. WS-2 is practically odorless and tasteless. It contributes pure physical cooling and nothing else, which is why it is a favorite in delicate flavor systems.
What certifications does ZHII provide with WS-2?
Each batch ships with a COA, and the product is covered by our ISO9001/ISO14001 quality system. KOSHER and HALAL certificates are available, along with regulatory support documents for your market.
Get a Free Sample of Cooling Agent WS-2
Looking for a reliable Cooling Agent WS-2 manufacturer and supplier? ZHII offers high-purity Cooling Agent WS-2 (51115-71-0) 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.
