Cooling Agents WS-23
WS-23 (2-Isopropyl-N,2,3-trimethylbutanamide) is renowned for its clean and long-lasting cooling effect (with a cooling strength of approximately 0.75). Unlike menthol, WS-23 delivers a cooling sensation without any accompanying minty flavour or odour, making it highly versatile for a wide range of applications.
WS-23 has KOSHER ,HALAL,REACH ready.
Substance Identification
| Synonyms | 2-Isopropyl-N,2,3-trimethylbutanamide |
| CAS | 51115-67-4 |
| EINECS | 256-974-4 |
| FEMA | 3804 |
| HS.CODE | 292429 |
| Molecular Formula | C10H21NO |
| Moleclar Weight | 171.28 |
Application & Uses
WS-23 is widely used across diverse product categories, including:
- Oral care products (e.g., toothpaste, mouthwash)
- Cosmetics (e.g., creams, lotions)
- Food and beverages
- Pharmaceuticals
- Personal care items (e.g., shampoos, conditioners)
Features & Benefits
- WS-23 exhibits excellent stability, making it ideal for formulations requiring consistent and prolonged cooling effects. It has virtually no odour or taste and low volatility, with a mild, refreshing mint flavour that delivers strong, impactful cooling which dissipates quickly (lasting approximately 7 minutes).
- It is generally recognised as safe (GRAS) for use in food, cosmetics, and personal care products when applied within recommended concentrations.
- Sparingly soluble in water at room temperature but highly soluble in hot water. Once dissolved in propylene glycol, it can be directly solubilised in water at ambient temperature and is readily soluble in alcohol and fats.
- Slightly less intense than WS-3, yet smoother without side effects like burning, numbness, or irritation. Sensory evaluations confirm WS-23 provides a cooler sensation than menthol, primarily affecting the front of the tongue and mouth.
| min | max | |
| Fog-fluid | 450 ppm | 2250 ppm |
| Beverage | 3 ppm | 24 ppm |
| Toothpaste | 300 ppm | 3000 ppm |
| Mouthwash | 15 ppm | 600 ppm |
| Hard candy | 30 ppm | 150 ppm |
| Chewing gum | 1500 ppm | 9000 ppm |
| Creams & Lotions | 1500 ppm | 15000 ppm |
| Recommended usage level | WS-23 | |
Sales Specification
| ITEM | VALUE | TEST METHOD & UNIT |
|---|---|---|
| Cooling Strength | 0.75 | @Menthol was set as 1 as a reference |
| Cooling Longevity | 8 | minutes |
| ITEM | VALUE | TEST METHOD & UNIT |
|---|---|---|
| Cooling Strength | 1.5 | @Menthol was set as 1 as a reference |
| Cooling Longevity | 6 | minutes |
| ITEM | VALUE | TEST METHOD & UNIT |
|---|---|---|
| Cooling Strength | 4 | @Menthol was set as 1 as a reference |
| Cooling Longevity | 10 | minutes |
| ITEM | VALUE | TEST METHOD & UNIT |
|---|---|---|
| Cooling Strength | 4.5 | @Menthol was set as 1 as a reference |
| Cooling Longevity | 12 | minutes |
| ITEM | VALUE | TEST METHOD & UNIT |
|---|---|---|
| Cooling Strength | 3.5 | @Menthol was set as 1 as a reference |
| Cooling Longevity | 36 | minutes |
GHS Hazard Statements
Storage
- Flammable materials should be stored in a separate safety storage cabinet or room
- Ground all equipment containing material
- Keep away from heat
- Keep away from sources of ignition
- Keep container tightly closed
- Keep in a cool, well-ventilated place
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Remark
The above information is believed to be accurate and presents the best explanation currently available to us. We assume no liability resulting from above content. The technical standards are formulated and revised by customers’ requirement and us, if there are any changes, the latest specification will be executed and confirmed in the contract.
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