Corrosion Inhibitor for
Closed Cooling Water Systems
Geopure® 7900 is a high-performance corrosion inhibitor
engineered for closed loop cooling and chilled water
systems operating under challenging conditions. It
provides comprehensive protection to mild steel, copper,
and copper alloys by forming a durable, stable protective
layer on metal surfaces.
Designed for systems with low make-up water and high
operational stress, Geopure® 7900 ensures long-term
reliability, prevents under-deposit corrosion, and
minimizes the risk of leaks or equipment damage. It is
suitable for HVAC chilled water loops, industrial closed
cooling circuits, and other closed recirculating water
systems requiring robust, dual-mechanism corrosion
protection.
- Type:Liquid
- Appearance:Clear to Pale White
- Odour:Slight
- Solubility in water:Complete
- Specific Gravity @ 25ºC:1.01 ±0.05
- pH(10% Solution):9.5 ~ 10.5
Physical Properties:
- Superior Corrosion Protection: Inhibits corrosion in ferrous and non-ferrous metals.
- High-Stress Closed Loop Optimized: Performs effectively in low make-up water and oxygen-limited conditions.
- Dual Protection Mechanism: Provides long-lasting protection under aggressive operating conditions.
- Copper Alloy Safety: Protects copper, brass, and associated alloys from galvanic corrosion.
- Operational Reliability: Reduces maintenance frequency and risk of system downtime.
- Enhanced System Efficiency: Minimizes corrosion-related fouling and leakage, maintaining heat transfer performance.
- Versatile Application: Suitable for HVAC chilled water loops, industrial closed cooling systems, Oil Filed and process cooling applications.
Geopure 7900 Nitrite based corrosion inhibitor
program should be added directly to the system in
its neat form either in makeup tank or dose thru pot
feeder system. Typically utilized at 500 to 1,500
ppm at pH>7.5. Residuals (150 to 250 ppm) must be
maintained to constantly repair gaps in the film
barrier.
Start-up Dosage Pattern
The start-up (passivation) dosage of Geopure 7900 is
5 – 10 Kg. for each 1000 Ltr. of water in the system
This will provide a sodium nitrite residual of 300
ppm as NO2.
Note:
If the make-up water has high chloride levels e.g.
brackish water, then the normal dose rate should be
doubled.
Geopure 7900 is 2.0 – 4.0 Kg. for every 1000 Ltr. Makeup or as per the residual level.
| pH | 9.5 – 10.5 |
| Conductivity | < 3,000 Micro Mhos |
| Total Hardness as CaCO3 | < 50 mg/L |
| Product Level (Nitrate as NO2) | 300 – 600 ppm |
| Product Level (Nitrate as NO2) | 300 – 600 ppm |
Please refer to your Geopure service engineer for exact product dosage.
| Proper human safety products such as Splash goggles, lab coat, vapour respirator, gloves and boots should be worn while handling and applying chemicals. Splashes on skin should be washed off with water immediately. In case of splashing into the eyes, flush it with fresh water and obtain medical attention. Should not be injected. Please refer MSDS for more details. . |
| This product should be stored in original containers in cool and dry place, away from sources of heat, flame and direct sunlight |