Bermocoll CCA 312 cellulose ether

Bermocoll

BERMOCOLL CCA 312 is a modified non-ionic, water soluble cellulose ether. It improves the

consistency and the water retention of gypsum and cement based plasters.

 

Specifications

BERMOCOLL CCA 312 is a modified high viscosity grade of ethyl hydroxyethyl cellulose.

 

Physical data

Appearance: whitish powder

Particle size: 98 % <300 μm

Water content: max 4 %

 

Characteristics of aqueous solutions

pH (1 % solution): neutral

Surface activity: weak

Viscosity at 20°C

(Brookfield LV)

1% solution: 2,300 – 3,000 mPa.s

 

Applications

BERMOCOLL CCA 312 is used as an admixture in gypsum and cement based plasters for

improvement of workability, consistency and water retention. BERMOCOLL CCA 312 prolongs the open time and effectively counteracts the sagging tendency of the plaster.

 

BERMOCOLL CCA 312 should be admixed to the plaster in dry form before the water is added.

Normal dosage is 0.15 - 0.30% calculated on the dry mix. Due to its small particle size BERMOCOLL CCA 312 will dissolve rapidly after addition of water to the dry mix.

 

Packaging and Storage

BERMOCOLL CCA 312 is packed in multiply paper bags with an inner polyethylene bag. Net weight 20 kg (approx 44 lbs). We recommend emptying the bags from the bottom. The empty bags can be recycled or burned. In unopened bags, BERMOCOLL CCA 312 can be stored for several years. In opened bags, the moisture content of BERMOCOLL CCA 312 will be influenced by the air humidity.

 

At the temperatures above 250°C (480°F), charring of BERMOCOLL CCA 312 will occur. At high temperatures and in contact with an open flame, BERMOCOLL CCA 312 will burn slowly with the characteristics of cellulose.