Cooling Agent WS-23 | Fast-Onset Cooling Burst
Product Overview
What Is Cooling Agent WS-23?
Cooling Agent WS-23 is a food-grade synthetic cooling agent. Its chemical name is 2-Isopropyl-N,2,3-trimethylbutyramide. Unlike most WS grades, it shares no structural link with menthol, yet it cools with remarkable force.
First, WS-23 stays almost odorless and tasteless. Therefore, it cools without adding any mint aroma or bitterness. Second, it activates the TRPM8 cold receptor on the tongue and the soft palate. As a result, the cooling arrives within seconds.
Third, WS-23 fades just as quickly as it arrives. In other words, it leaves no lingering aftertaste behind. It also holds FEMA number 3804 and CAS number 51115-67-4. Consequently, formulators choose it whenever the brief calls for an instant cool.
Technical Specifications
| Item | Specification |
| Product Name (EN) | Cooling Agent WS-23 |
| Chemical Name | 2-Isopropyl-N,2,3-trimethylbutyramide |
| Synonyms | WS-23; N,2,3-Trimethyl-2-isopropylbutanamide; Koolada WS-23 |
| CAS Number | 51115-67-4 |
| FEMA Number | 3804 |
| EINECS Number | 256-974-4 |
| Molecular Formula | C10H21NO |
| Molecular Weight | 171.28 g/mol |
| Appearance | White crystals / crystalline powder |
| Odor | Mild cooling, slight menthol note; almost odorless |
| Taste | Fast-onset burst, clean decay, no aftertaste |
| Assay (Purity) | >= 99.0% (GC) |
| Melting Point | 58 – 63 °C |
| Flash Point | > 100 °C |
| Acid Value | <= 1.0 mg KOH/g |
| Moisture | <= 0.5% |
| Arsenic (As) | <= 3 mg/kg |
| Solubility | Soluble in ethanol, propylene glycol and other food-grade solvents; slightly soluble in water (< 0.7%) |
| Cooling Duration | 15 – 30 minutes, with a fast onset and a clean decay |
| Recommended Dosage | 30 – 100 mg/kg in most finished products; adjust to the target cooling intensity |
| Heat Stability | Stable up to 200 °C |
| Category | Cooling Agents |
| Storage Conditions | Store in a cool, dry place. Keep away from direct light and heat. Close the package tightly after use. |
| Shelf Life | 24 months when stored properly |
Applications & Uses
E-Liquid, Vape & Tobacco Applications
Cooling Agent WS-23 delivers its fast-onset burst in:
- E-liquids and vape juice
- Nicotine pouches and oral nicotine products
- Cooling flavor concentrates
- Tobacco products and cigarette filter tips
- Heat-not-burn tobacco sticks
Beverage & Instant Drink Applications
The burst profile also performs well in:
- Energy drinks and sports drinks
- Sparkling water and flavored soda
- Iced tea and ready-to-drink beverages
- Beer and distilled spirits
- Instant drink mixes and sachets
- Slush drinks and frozen beverages
Confectionery & Oral Care Applications
Formulators commonly add WS-23 to:
- Chewing gum and bubble gum
- Hard candy and pressed candy
- Gummies and jelly
- Chocolate and compound coatings
- Toothpaste and whitening gel
- Mouthwash and breath freshener
- Breath strips and oral sprays
Dairy, Personal Care & Pharmaceutical Applications
WS-23 also supports:
- Ice cream, sorbet and frozen dessert
- Flavored milk and drinking yogurt
- Skin cream and body lotion
- Face mask and cooling gel
- Shaving cream and after-shave
- Shampoo and scalp care
- Sunscreen and after-sun lotion
- Air freshener
- OTC liniments and cooling balms
- Cooling patches and plasters
- OEM flavor and cooling blends
Certifications & Compliance
We can provide the following quality and product documents:
- ISO 9001:2015 — Quality Management System
- ISO 22000 — Food Safety Management
- GMP — GMP-aligned manufacturing facility
- HALAL — Certified batches available
- KOSHER — Certification available upon request
- COA / MSDS / TDS — Product documents available for each lot
- FEMA 3804 / FLAVIS 16.053 / JECFA 1595 — Flavor industry listings
- Non-Restricted Cargo — Standard export classification
- Third-party laboratory testing — SGS, Eurofins or your selected laboratory
Packing & Logistics
Standard Package
Powder: 1 kg / aluminium-foil bag; 25 kg / fiber drum.
Liquid blend: 1 kg / bottle; 5 kg and 25 kg / drum.
Carton Dimensions
22 cm × 16 cm × 34 cm
Packaging Material
We pack the crystalline powder in food-grade aluminium-foil bags. We then place the bags inside strong cardboard cartons or HDPE-lined fiber drums. The liquid blend goes into food-grade HDPE bottles and drums.
Sealing
We seal each package with three layers of tape winding and shock-resistant packing.
Net Weight
1 kg per standard package.
Custom package sizes such as 5 kg and 25 kg are available upon request.
Need specifications, COA, or a wholesale quote? Contact Us — typical response within 24 hours.