Cooling Agent WS-10 | Liquid Cooling Agent
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
Packing & Logistics
Standard Package
Liquid: 1 kg / fluorinated HDPE bottle; 25 kg / lined drum.
Bulk: 170 kg / lined drum.
Carton Dimensions
22 cm × 16 cm × 34 cm
Packaging Material
We fill WS-10 into food-grade fluorinated HDPE bottles and pack them inside strong cardboard cartons. Bulk lots go into lined steel or HDPE drums with sealed closures.
Sealing
We seal each package with three layers of tape winding and shock-resistant packing.
Net Weight
1 kg per standard bottle.
Custom package sizes such as 5 kg, 25 kg and 170 kg are available upon request.
Need specifications, COA, or a wholesale quote? Contact Us — typical response within 24 hours.