The RPI-4500C was created in 2015 to concentrate in a small volume a maximum of scale inhibition power. The RPI-4500C is a complex formulation which efficiency is based on the synergies of its ingredients.  The reference is formulated to treat hard and silicated water where the concentration of calcium & magnesium is high.
The RPI-4500C is the concentrated version of the successful RPI-4500A reference.


RPI-4500C is approved for use with cellulose acetate and polyamide membranes. There is no interaction with the membrane material.
The dosage is controlled proportionally to the feed water flow. Suitable materials are PE, PP or coated steel.
RPI-4500C can be used as is or diluted in water in any ratio. The diluted solutions should be used within 48 hours of preparation. The required dosage level varies in the range of 1 – 10 ppm as delivered.
RPI-4500C is easy to handle and does not contain any aggressive components. The pH value of the product is slightly acidic.

Physical Properties

Appearance: clear, reddish-brown liquid

Density: 1.23 – 1.27 g/cm3

pH value: 4.0 – 4.5

Boiling point / boiling range: 100°C – 105°C

Freezing Point: - 10°C

Solubility in water: unlimited

Storage & Handling

RPI-4500C is not classified as a hazardous chemical (GGVE/GGVS, ICOA/IATA). Standard regulations and precautions when dealing with chemical products have to be followed.
RPI-4500C is easy to store. The storage temperature should be between 0 °C and 35 °C. The product is supplied in containers suitable for air or sea transportation.
The safety data sheet contains more information.


Polyethylene canister (PE) 23.5 kg net
Standard drum (PE) 240 kg net
IBC Container (PE) 1,100 kg net

Safety Data Sheet


Technical Description