Cooling agent WS-23 is the most popular cooling compound in e-liquid formulations due to its excellent solubility, durability, and neutral flavor profile. This comprehensive instruction guide covers preparation, dosage, and blending techniques for optimal cooling results.
WS-23 Properties
WS-23 is a synthetic cooling agent that does not affect the flavor of e-liquid but enhances the cooling taste. It provides a clean, menthol-free cold sensation that activates the TRPM8 receptor in the mouth. Key properties include 30% solubility in propylene glycol, 99%+ purity, USP food grade certification, and CAS number 51115-67-4.
Preparation: Making a 30% WS-23 PG Solution
- Weigh 30g WS-23 powder and add to 70g USP-grade propylene glycol
- Heat to 40-50 degrees Celsius while stirring continuously
- Stir until completely clear — no visible particles
- Cool to room temperature — solution should remain clear
- Store in amber glass bottle away from sunlight
Dosage Instructions
The solubility of WS-23 in PG is 30%, so the standard preparation is a 30% WS-23 PG solution. Add this solution to e-liquid at the following rates:
| Effect | 30% Solution Dosage | Pure WS-23 Equivalent |
|---|---|---|
| Light cool | 1-2% | 0.3-0.6% |
| Medium cool | 2-3% | 0.6-0.9% |
| Strong cool | 3-5% | 0.9-1.5% |
| Maximum cool | 5-10% | 1.5-3.0% |
Blending with WS-3 for Enhanced Cooling
Many e-liquid manufacturers mix WS-23 with WS-3 for a multi-dimensional cooling experience. WS-23 cools the front of the mouth while WS-3 provides throat cooling. Recommended ratio: 3 parts WS-23 to 1 part WS-3.
WS-3 preparation: 10% solution in PG (10g WS-3 + 90g PG). Add at 0.5% to e-liquid for complementary throat cooling.
Troubleshooting
- Solution crystallized: Re-warm to 50 degrees and stir until clear
- Weak cooling: Increase dosage in 0.5% increments
- Over-cooled: Dilute with unflavored PG/VG base
- Flavor muted: Reduce WS-23 and increase flavor concentrate
Storage and Safety
Store WS-23 powder in a cool, dry place. The 30% PG solution is stable for 24 months when properly sealed. Avoid direct skin contact with pure powder. Always use food-grade (USP) propylene glycol as the solvent.
Source from Xi’an Taima
Xi’an Taima is a leading manufacturer of WS-23 and other cooling agents. Our products are 99%+ pure, USP grade, with full COA documentation. Free 125ml samples available. Contact us for wholesale pricing.