Technical data
| Appearance | Clear transparent liquid |
|---|---|
| Color (Hazen) | ≤10 |
| Acid value (mgKOH/g) | 230–265 |
| Free acid (wt%) | ≤2.5 |
| Viscosity (mPa·s, 25℃) | 550–720 |
| Density (g/ml, 25℃) | 1.240–1.350 |
| Water content (wt%) | ≤0.1 |
| Inhibitor MEHQ (ppm) | 250–500 |
Values are typical. The latest TDS and batch COA govern.
Key features
- Color ≤10 Hazen — suitable for light and transparent systems
- Difunctional: faster polymerization and higher crosslink density
- Low shrinkage, good acid and alkali resistance
- Low odor
Typical applications
- Light-colored UV coatings and inks
- Photoresist / solder resist inks
- Vacuum metallizing base coats
- Optical and electronic adhesives
- Dental composites (industrial grade — separate evaluation required)
FAQ
Why is KM2120 so much lighter in color?
Esterification and purification are controlled to minimize residual phosphoric acid and colored by-products, keeping Hazen below 10 for yellowing-sensitive systems.
Can KM2120 be used in optical adhesives?
It is a candidate, but ionic impurities, haze and yellowing must be evaluated. Request batch COA and ion data, then run a pilot.