Renex K Blue

Fomtec Renex K-Blue is a novel fire extinguishing powder based on a complex of Potassium Bicarbonate (90%) and is an extremely efficient fire extinguishing powder and imparts excellent fire protection for medium to high risk areas. It is recommended for use on class B and C fires where it exhibits superior performance when compared to other commercially available BC type dry powders.

Water repellency

All raw materials are carefully selected and of the highest quality. With the addition of high-quality silicone oil, Renex K-blue is protected against moisture and temperature fluctuations in a wide range of applications and is highly hydrophobic.


If stored properly, the extinguishing capacity will not decrease even after several years (at least 5 years). The storage may cause clumping, which can be loosened again by moving the powder.

Foam compatibility

Renex K-Blue powder is compatible with all common foams.

Potassium Bicarbonate 90% +/- 3%
Appearance Blue powder
Apparent density >0.87 kg/cu dm +/- 0,07
Moisture content Less than 0,25%
Flowability > 70 gram/sec
Particle size < 0,040 mm (%) 70 +/-5
Particle size < 0,063 mm (%) 80 +/-5
Particle size > 0,125 mm (%) 2,5 +/-5
Corrosion & abrasion effect Non corrosive or abrasive
Temperature stability range -60°C to +55°C

Extinguishing mechanism

Potassium Bicarbonate powders extinguish flammable liquid fires by interfering with the chemical reactions which are taking place in the combustion zone. These chemical reactions produce “free radicals” which attach themselves to the surface of the powder particles introduced into the flame, thus the flame ceases to exist and the fire is extinguished.

Manufacturer’s note

Mixing different types of powder (ABC and BC) can lead to clumping and gas formation, which can increase the pressure in the fire extinguisher to a dangerous level.

Physiological safety declaration

In case of fire there are no toxicological concerns about the handling and using of the a.m. powder.


Renex powders are formulated not to be affected by long term storage. However, although all powders are stable at low temperatures, there are upper temperature limits for storage which will depend on the chemical nature of the particular powder. As a general guide, temperatures of 55˚C should not be exceeded. Powders should be stored in a dry location in original packaging until required for use.


Renex K-Blue powder is available in a range of pack sizes and styles. For standard shipment, Renex K-Blue powder can be supplied in paper bags each 25 kg net, 40 bags on a pallet, with stretch foil wrapping on a pallet.


Renex K-blue corresponds to the current European standard EN 615:2009