(1-Hydroxyethylidene)bis-phosphonic Acid Tetrasodium Salt CAS 3794-83-0
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Product Description
Product Details
Introduction
(1-Hydroxyethylidene)bis-phosphonic Acid Tetrasodium Salt, also known as HEDP·Na4, is the sodium salt of HEDP.
HEDP·Na4 is an organic phosphonate scale and corrosion inhibitor. It can form stable complexes with various metal ions such as iron, copper, and zinc, and can dissolve oxides on the metal surface. It still has a good corrosion and scale inhibition effect at 250°C.
HEDP·Na4 is an excellent inhibitor of calcium carbonate scale. HEDP·Na4 is mainly used for metal corrosion inhibition in low-pressure boiler water treatment, industrial circulating cooling water treatment, industrial municipal clean water, and swimming pool sterilization.
In the textile industry, HEDP·Na4 can be used as a cleaning agent for metals and non-metals, a peroxide stabilizer and color fixative in the printing and dyeing industry, a cyanide-free electroplating complexing agent, and a daily chemical additive.
Specification
| Appearance | Colorless to slightly yellow transparent liquid | White crystal powder |
| Active ingredients(HEDP) | 20.3~21.7% | ≥60.0% |
| Active ingredients(HEDP·Na4) | 29.0~31.0% | ≥85.0% |
Loss on drying | -- | ≤10.0% |
Phosphoric acid (as PO43-) | 18.4~20.4% | ≥55.0% |
pH value (1% solution) | 10.0~12.0 | 11.0~12.0 |
Density | 1.26~1.36g/cm3 | -- |
Iron (as Fe) | ≤20mg/L | ≤35mg/L |
Package: 30, 250kg/drum, 25kg/bag
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