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Sell: HEDP 1-Hydroxyethylidene-1,1-Diphosphonic acid |
| Date: |
2010-01-25 |
| Cas#: |
2809-21-4 |
| Specification: |
50% 茂录艗60% |
| Price: |
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| Quantity: |
7000Kilogram |
| Term: |
365 |
| Note: |
1-Hydroxyethylidene-1,1-Diphosphonic acid (HEDP) [2809-21-4]
Abbreviation: HEDP Molecular weight: 206.02
Specifications:
Appearance Clear, Colorless to pale yellow aqueous solution
Active Content(as HEDP) 50.0 - 60.0 %
Phosphorous acid (as PO33- ) 2.0% max
Phosphoric acid (as PO43- ) 0.8% max
pH (1% Water Solution) 2.0 max
Density (20 ) g/cm3
1.34 - 1.40
Iron 10ppm max
Chlorides (as CL-) 100 ppm max
Color (APHA) 30 max.
Ca sequestration mg CaCO3/g 480 min
Acetic Acid 1.0% max
Usage:
HEDP is usually used together with polycarboxylic acid, to make up whole-organic-alkali or low-phosphor zinc-based agent of water treatment to be used in all kinds of cyclic cooling water systems different from water quality.
The dose is generally 2~10mg/L while HEDP is used alone. The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent.
Applications:
HEDP(S) is a type of cathodic inhibitor. Compared with inorganic phosphates, it can be compounded with sodium molybdate, silicate, zinc salt and co-polymer mainly as scale corrosion inhibitor in treatment of cyclic cooling water, oil field flash and boiler water. It is mainly used as a Scale and Corrosion Inhibitor. It's also used as chelating (Sequestrating), deflocculating agent in Textile Dyeing, Detergents etc.
Packing and Storage:
Normally In 30kg or 250kg net Plastic Drum, IBC's can also be used as required. Stored in cool and ventilated room in one year.
Safety Protection:
Acidity, avoid contact with eye and skin, once contacted, flush with water. |
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