Renex BC Plus

Fomtec Renex BC Plus is a multi-purpose dry chemical powder with a good efficiency and performance in fires of class B, C and E. Renex BC Plus is based on highly efficient potassium sulphate and made resistant to influence of climatic extremes by means of hydrophobic agents.

Quality control and approvals

Renex powders are manufactured and tested according to European Standard EN615 (1995). Manufacturing process and quality control system has been approved to ISO 9002.

Appearance A fine, free flowing powder
Apparent density Minimum 0,98 kg/dm³
Tap density 1,30 -1,40 kg/dm³
Moisture content Less than 0,20%
Flowability >50 g/sec
Specific surface area using Fisher aparatus 3600 - 3200 cm²/g
Maximum particle size 300 - m
Particle distribution
Smaller than 40 - m 75-85%
Smaller than 63 - m 85-95%
Corrosion & abrasion effect Non corrosive or abrasive
Temperature stability range -60°C to +50°C

Extinguishing mechanism

Potassium Sulphate 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. The grinding of the base material to obtain a suitable surface area and particle size distribution is critical to the reaction of the particle surface.


Renex powders are available in a range of pack sizes and styles. Renex BC Plus powder can be supplied in 25 kilo multiwall paper sacks, PE transparent plastic wrapped on pallets of 1000 kilo. These packages are suitable for containerized shipment. Powders can also be supplied in 1000 kilo Big Bags to simplify handling and to feed into extinguisher filling machine hoppers. This type of packaging is also suitable for containerized shipment.



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 50˚C should not be exceeded. Powders should be stored in a dry location in original packaging until required for use.