Cooling Agent WS-10 Technical Data and Specifications
Product Overview
What Is Cooling Agent WS-10?
Cooling Agent WS-10 is a food-grade synthetic cooling agent. Its chemical name is 3-(L-Menthoxy)propane-1,2-diol, and the trade also knows it as menthoxypropanediol. WS-10 breaks one rule that the rest of the series follows, because it arrives as a liquid.
First, WS-10 carries two hydroxyl groups on its backbone. Therefore, it blends into water-based systems far better than most WS grades. Second, it activates the TRPM8 cold receptor across the whole oral mucosa and on the skin. As a result, the cooling feels gentle, yet it persists for 15 to 30 minutes.
Third, WS-10 measures a cooling strength of about 4.5 against menthol, which sits at 1. In other words, a small dose does the work of a much larger mint load. It also holds FEMA number 3784 and CAS number 87061-04-9. Consequently, formulators reach for it whenever a formula needs a liquid that pours straight in.
Technical Specifications
| Item | Specification |
| Product Name (EN) | Cooling Agent WS-10 |
| Chemical Name | 3-(L-Menthoxy)propane-1,2-diol |
| Synonyms | WS-10; Menthoxypropanediol; MOPD; 3-L-Menthoxypropane-1,2-diol |
| CAS Number | 87061-04-9 |
| FEMA Number | 3784 |
| EINECS Number | 289-296-2 |
| JECFA Number | 1408 |
| Molecular Formula | C13H26O3 |
| Molecular Weight | 230.34 g/mol |
| Appearance | Colorless to light-yellow clear liquid |
| Odor | Faint, almost odorless |
| Taste | Gentle, persistent cooling with a slow build |
| Assay (Purity) | >= 99.0% (GC) |
| Cooling Strength | ~ 4.5 (menthol = 1 as reference) |
| Relative Density (25 °C) | 0.986 – 1.004 |
| Refractive Index (20 °C) | 1.473 – 1.476 |
| Boiling Point | 121 – 125 °C at 0.25 mmHg |
| Flash Point | ~ 177 °C |
| Solubility | Slightly soluble in water (2.27 g/L at 20 °C); good solubility in oils, propylene glycol and ethanol |
| Cooling Duration | 15 – 30 minutes, with a slow build and a persistent plateau |
| Recommended Dosage | Beverage ~10 mg/kg; confectionery ~10 mg/kg; chewing gum up to 1200 mg/kg; toothpaste 150-1200 mg/kg; mouthwash 15-300 mg/kg; creams and lotions 1500-15000 mg/kg |
| 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
Cosmetics & Personal Care Applications
Cooling Agent WS-10 works on the skin as well as in the mouth, which makes it a strong fit for:
- Skin cream and body lotion
- Face mask and cooling gel
- After-sun lotion and sunscreen
- Shaving cream and after-shave
- Shampoo, conditioner and scalp care
- Body wash and shower gel
- Lip balm and lip treatment
- Wet wipes and refreshing towels
Beverage & Dairy Applications
The liquid form also performs well in:
- Still and sparkling beverages
- Iced tea and ready-to-drink drinks
- Energy drinks and sports drinks
- Syrups and cordials
- Ice cream, sorbet and frozen dessert
- Flavored milk and drinking yogurt
Oral Care & Confectionery Applications
Formulators commonly add WS-10 to:
- Toothpaste and whitening gel
- Mouthwash and breath freshener
- Chewing gum and bubble gum
- Hard candy and lozenges
- Breath strips and oral sprays
Pharmaceutical & Specialty Applications
WS-10 also supports:
- Cooling patches and plasters
- Topical sprays and liniments
- Throat lozenges and cough drops
- OTC analgesic and antipruritic gels
- Air freshener and room spray
- Solvent-free cooling blends with WS-3 and WS-23
- 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 3784 / JECFA 1408 — Flavor and cosmetic ingredient listings
- Non-Restricted Cargo — Standard export classification
- Third-party laboratory testing — SGS, Eurofins or your selected laboratory
Need specifications, COA, or a wholesale quote? Contact Us — typical response within 24 hours.