HEC Powder – EBM 3500

BERMOCOLL Prime 3500 is a non-ionic, water soluble cellulose ether with enhanced enzymatic resistance. and superior colour stability. It improves the consistency, the stability, and the water retention of water based paints.

Typical Properties

Appearance: whitish powder
Particle size: 98 % < 500 μm
Water content: max 4 %
Salt content: max 6 %


BERMOCOLL Prime 3500 is a high viscosity grade of methyl ethyl hydroxyethyl cellulose.

Application Areas

BERMOCOLL Prime 3500 can be used as a rheology modifier in all types of latex paints. BERMOCOLL Prime 3500 is recommended when high in-can as well as enhanced application viscosity is required. BERMOCOLL Prime 3500 offers enhanced colour and heat stability, and provides excellent colour acceptance even with colorants that are known to be problematic. Normal dosage is 0.2 – 0.7 % calculated on the total paint weight.

BERMOCOLL  Prime  3500  is  easily  dispersed  in cold water of pH 7 or less. BERMOCOLL Prime 3500 can form lumps when added to an alkaline liquid. To avoid this, it should be added as a ready stock solution, as slurry in slight acid water or in an organic solvent, or as a dry mix with other powder materials.

The dissolving time after dispersion is influenced by the water pH. Alkaline additives can be used to speed up the dissolving process.

Safety instructions, Packaging and Storage

Like many industrial processed powdery materials, cellulose ether dusts are combustible and can cause dust explosions. Dust formation must be avoided or kept to a minimum.  Care should be taken to prevent ignition from heat, spark, open flames or hot surfaces. BERMOCOLL Prime 3500 is packed in polyethylene plastic bags. Net weight 20 kg. We recommend emptying the bags from the bottom. The empty bags can be recycled or burned. In unopened bags, BERMOCOLL Prime 3500 can be stored for several years. In opened bags, the moisture content of BERMOCOLL Prime 3500 will be influenced by the air humidity.

At the temperatures above 250°C (480°F), charring of BERMOCOLL Prime 3500 will occur. At high temperatures and in contact with an open flame, BERMOCOLL Prime 3500 will burn slowly with the characteristics of cellulose.