Product Description :
“Stanrose® Control C” is a concentrated liquid neutralizing agent for corrosion control in condensate and feed water systems.
Technical Review :
Carbon dioxide enters the condensate system in two ways :-
(a) As a dissolved gas.
(b) As a decomposition product of soluble carbonates and bicarbonates , carbon dioxide vaporizes from the boiler and forms carbonic acid when it condenses with the condensate lowering the pH, iron and copper will enter into solution more rapidly as pH decreases causing an increase in corrosion rate. Within the condensate system and deposition of metallic oxides in the boiler “Stanrose® Control C” is quickly volatilised in the boiler and travels with the stream. In this way, it is able to neutralize carbon dioxide at all points through out the system, “Stanrose® Control C” effectively protects condensate areas against grooving or channeling and prevents the frequent failure at threaded points caused by low pH attack.
Features and Benefits
Soluble in all proportions in water.
Protects vapour and condensate areas from low pH corrosion.
Protects copper and copper base alloys as well as iron and steel.
Mild cleaning action, increasing heating efficiencies.
Increase or decrease the recommended dosage according to the chart below :
All Boiler Systems
Condensate pH form Testing
Less than 8.3 Increase Dosage by 25% for 72
8.3 – 9 Satisfactory maintain dosage
9.0 + Decrease dosage by 25% for 72 hour and retest
Requires minimum of testing and control.
Can be fed alone or with other treatment chemicals.
Does not break down to ammonia which is harmful to copper.
Boiling point over 93°C / 204°F’
Method of Application
“Stanrose® Control C” is a liquid, volatile alkaline amine which neutralizes the acid contaminants of condensate and feed water systems thus preventing the acid corrosion of system components. The most common cause of acid corrosion in condensate and feed water systems is the dissolved carbon dioxide (CO2) being present in the water evaporating. “Stanrose® Control C” neutralizes these acids and maintains the condensate and feed water in an alkaline condition.
The condensate is tested of pH to determine the dosage level. The minimum pH should be 8.3, the optimum would be between pH 8.3 and 9.0. A typical dosage for an average 10 metric tone system would be 0,5-1 liter per day. Below is a chart with the recommended limits for levels of treatments. They are not intended to replace either shipping company instructions or boiler manufacturer’s policy.
“Stanrose® Control C” dosage cannot be calculated as closely as dosages for other treatment chemicals. Table below provides a starting dosage, but the ultimate dosage should be based on the pH actually developed in the condensate.
In system starting to use “Stanrose® Control C” for the first time the feed rate should be started at 25% of the external dosage. The dosage can be increased in 25% increments at 3-4 week intervals. This technique will avoid sweeping excessive amounts of old corrosion products dislodged by “Stanrose® Control C” back into the boiler.
Storage and Handling
Avoid contact with eyes and skin. In case of contact rinse with plenty of water. Wear suitable protective clothing, gloves and eye/face protection.
Keep away from heat, sparks and open flame. Ensure that the working area is well ventilated.
Store at moderate temperatures in dry, well-ventilated area.