CAS No.: 25068-38-6
Chemical Name: 4,4'-(1-Methylethylidene)bis(phenol) polymer with (chloromethyl)oxirane
Common Name: Bisphenol A type liquid epoxy resin (DGEBA)
Equivalent Grade: DER331 (Dow), Epon 828, NPEL-128
EINECS No.: 500-033-5
1. Chemphysical Properties
Appearance Clear pale yellow viscous liquid
Density (25℃) 1.15 ~ 1.17 g/cm³Viscosity (25℃) 11000 ~ 14000 mPa·s
Flash Point (CC) ≥150 ℃
Solubility Miscible with ketones, esters, aromatic hydrocarbons; insoluble in water
Stability Stable at ambient temperature; reacts with amines, anhydrides and other curing agents
2. Quality Specification (CYD-128 Standard Grade)
| Test Item | Specification | Test Standard |
|---|---|---|
| Epoxy Equivalent Weight (EEW) | 184 ~ 194 g/eq | ASTM D1652 |
| Color (Gardner) | ≤0.5 | ASTM D1544 |
| Hydrolysable Chlorine | ≤0.10 wt% | ASTM D1726 |
| Volatile Content | ≤0.20 wt% | / |
| Total Chlorine | ≤0.2 wt% | / |
3. Application & Use
Anti-corrosion Coatings: Industrial anticorrosive paint, floor self-leveling coating, electrophoretic coating
Adhesives & Sealants: Structural adhesive for metal, composite materials
Electrical & Electronics: Potting, impregnation, copper clad laminate, insulation casting
Composites: FRP, carbon fiber composite materials
Raw Material: Precursor for modified epoxy resin
4. Packing
Standard: 200kg / 225kg steel drum
Bulk: ISO tank / IBC tank available
5. Storage & Transportation
Storage: Keep tightly sealed in cool, dry, well-ventilated warehouse, avoid direct sunlight and low-temperature crystallization. Shelf life: 12 months under proper storage
Transport: General chemical goods. Keep away from strong oxidants, amines, food and feed. Prevent leakage
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