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Active ingredient
Hydroxyethylidene-1,1-diphosphonic Acid, HEDP
Characteristics
Sequesters Fe, Cu, Zn, Al. Resistant to high
temperature and oxidation, low-toxicity.
Use
Scale/corrosion inhibitor for heat exchanger and
boiler; chelating agent in electroplating; metal
sequestering agent in textile processing.
Specification
| Appearance |
clear, colorless to light yellow liquid.
|
| HEDP, % |
≥50
|
| Phosphorous acid (PO33-),
% |
≤3.0
|
| Phosphoric acid (PO43-),
% |
≤1.0
|
| pH (1% aq. solution) |
≤2
|
| Density (20°C), g/cm3 |
≥1.34
|
| Calcium chelation
value, mg/g |
≥450
|
Application Guide
Rate of use is generally 1-10mg/L for scale
inhibition, and 10mg/L for corrosion inhibition.
It can be used in combination with carboxylic acid
scale inhibitor. Avoid chlorine.
Packaging & Storage
Plastic drum, net weight 25kg. It shall be stored
in a ventilated place. Avoid direct sunlight and
alkali. Shelf life: 12 months.
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HEDP
