GMS (Glycerol Monostearate) – Essential EPS Lubricant & Anti-Static Agent
Product Overview
GMS, or Glycerol Monostearate, is a high-purity food-grade additive widely used as a primary EPS Lubricant and anti-static agent. As the leading EPS additive solution provider, Senthos supplies premium GMS that ensures excellent bead flow, reduces static electricity during pre-expansion, and improves the surface quality of finished EPS products.
Detailed Technical Specifications (TDS)
Our GMS is manufactured with high monoglyceride content to ensure maximum efficiency in EPS processing:
| Property | Technical Standard |
| Product Name | Glycerol Monostearate (GMS) |
| CAS Number | 123-94-4 |
| Appearance | White waxy beads or powder |
| Monoglyceride Content | ≥ 90% (GMS-90) / ≥ 40% (GMS-40) |
| Free Acid (as Stearic Acid) | ≤ 2.5% |
| Iodine Value | ≤ 3.0 gI2/100g |
| Melting Point | 60°C – 70°C |
| Heavy Metals (as Pb) | ≤ 5 mg/kg |
Key Performance & Advantages in EPS
Excellent Internal Lubrication: GMS acts as a powerful EPS Lubricant, reducing the friction between polymer chains and improving the fusion of EPS beads during molding.
Anti-Static Properties: It significantly reduces static charge build-up during the pre-expansion and aging process, preventing bead sticking and ensuring smooth silo discharging.
Surface Quality Improvement: By enhancing the flowability of the beads, GMS contributes to a smoother and more uniform surface finish of the final foam products.
Synergistic Solution: GMS is a key component in complex coating systems. For a more comprehensive solution, explore our ST EPS Coating 442, which pre-blends GMS with GTS and Zinc Stearate for superior anti-lumping performance.
Packaging, Storage & Logistics
Packaging: Standard 15kg carton box.
Storage: Store in a cool, dry, and well-ventilated area below 30°C. Keep away from heat and direct sunlight to prevent clumping.
Shelf Life: 24 months from the date of manufacture.