Cooling agent WS-1 (CAS 16052-40-7) is a white crystalline powder that creates a clean, refreshing cooling sensation without the minty aroma, burning taste or volatility of menthol. As one of the classic members of the WS cooling agent series, WS-1 is a versatile ingredient for food, beverage, confectionery, oral care and personal care formulations. In this guide we review its key properties, cooling profile, applications and the best way to source high-purity WS-1 in bulk.
What Is Cooling Agent WS-1 (16052-40-7)?
WS-1 belongs to the WS series of amide-based synthetic cooling agents. Instead of simply evaporating like menthol, WS-1 interacts directly with the body’s cold receptors (TRPM8), producing a genuine physical cooling effect that lasts longer and stays stable during processing. Because it carries little to no mint character, formulators can add cooling to a product without changing its intended flavor profile — a major advantage over natural menthol crystals.
Key Properties of Cooling Agent WS-1
| Property | Specification |
|---|---|
| Product Name | Cooling Agent WS-1 |
| CAS No. | 16052-40-7 |
| Appearance | White crystalline powder |
| Odor | Slight, characteristic (no strong mint odor) |
| Purity | ≥99% (typical, COA available on request) |
| Solubility | Freely soluble in ethanol and propylene glycol; low water solubility |
Cooling Profile & Sensory Characteristics
WS-1 delivers a moderate, well-balanced cooling effect with a smooth onset. The cooling sensation builds gently, holds for several minutes and fades without a harsh aftertaste. At recommended use levels WS-1 shows very low bitterness, which makes it easy to combine with sweeteners, acids and fruit flavors. It is also thermally stable, so the cooling effect survives pasteurization, baking and other heat processes far better than menthol.
Applications of Cooling Agent WS-1
Thanks to its clean profile and process stability, WS-1 is used across a wide range of industries:
Food & Beverage
Ready-to-drink beverages, sparkling and flavored waters, dairy drinks, ice cream, desserts, hard candy, gummies and chewing gum. WS-1 adds a fresh, cool finish that makes sweet and fruit flavors taste livelier.
Oral Care
Toothpaste, mouthwash, breath strips and whitening products. WS-1 extends the cooling impression after brushing without the aggressive menthol burn.
Cosmetics & Personal Care
Face creams, body lotions, aftershave products, foot care and refresh wipes. The gentle cooling of WS-1 soothes and refreshes the skin without irritation.
Flavor Concentrates & Beverages
WS-1 provides smooth, physical cooling in flavor concentrate formulations and pairs well with fruit and dessert flavor systems.
Recommended Use & Dosage
Typical use levels of WS-1 vary by application and desired intensity; formulators generally start from low ppm levels and adjust upward after sensory testing. Our technical team is glad to share starting formulation ranges for your specific product — just contact us.
Packaging & Storage
Cooling Agent WS-1 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-1 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
Is Cooling Agent WS-1 food grade?
Yes. ZHII produces WS-1 to food-grade standards under an ISO9001-certified quality system, and every batch is shipped with a Certificate of Analysis. As with any food additive, buyers should confirm the permitted use of WS-1 in their own market and application.
How is WS-1 different from menthol?
Menthol is volatile and carries a strong mint aroma with a burning aftertaste. WS-1 is nearly odorless, produces pure physical cooling, lasts longer on the palate and survives heat processing much better than menthol.
Can I get free samples of WS-1?
Absolutely. ZHII offers free evaluation samples of WS-1 — you only cover the courier cost. Bulk quantities from 1 kg to full container loads are available with fast delivery.
Get a Free Sample of Cooling Agent WS-1
Looking for a reliable Cooling Agent WS-1 manufacturer and supplier? ZHII offers high-purity Cooling Agent WS-1 (16052-40-7) 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.
