Features：
◎prefilming Inhibitor composed of polyphosphates and zinc salt；form a layer of thin and compactfilm on the surface of metal when there is a high concentration.
◎fast rate of film formation andefficientfilmrepairing.
Index：
|
Appearance |
colorless or yellow transparent liquid |
|
PH(1% aqueous solution) |
2.5~3.5 |
|
Total phosphorus content（PO43-） |
≧50.0% |
|
Zinc（Zn2+）content |
≧8.0% |
Fields:
This product isbe suitable forpre-filming treatment in recirculating cooling water system.
Usage:
Application concentration:200~300㎎/L.
When it is compounded with 100㎎/L scale inhibiting-dispersing agent,PH：6.0~7.0. The time ofpre-filmis 48hours(cold state) and 24hours(thermal state).
When it is used as corrosion inhibitor in normaloperation,the general dosage is10~30㎎/L in line withcalcium ion concentrationin water.The proportion is 1:1.1~1:1.3.
Packaging and storage:
◎25㎏packed in awoven bag.
◎Stored in a cool and dry place.
◎Usable life:1 year.
