Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Na4)
Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP•Na4)
CAS NO.3794-83-0 (4-Na), Dequest 2016
29329-71-3 (x-Na) Dequest 2016DG
Synonyms: Tetrasodium etidronate
Molecular Formula: C2H4O7P2Na4 Molecular weight: 294
Properties and Use
HEDP•Na4 is the sodium salt of HEDP，is an good scale inhibitor for calcium carbonate，it can be used in low pressure boiler water system, circulating water system, industrial and municipal cleaning water system and swimming pool.。
The solid HEDP•Na4 is white powder，soluble in water，easily deliquescence，Convenient Transport，sui table for use in winter and freezing districts. HEDP•Na4 is belong to Organic phosphate salt acid scale and corrosion inhibitor，can form stable complex with Fe, Cu and Zn ions, it can dissolve the oxides on metal surface, it has good scale and corrosion inhibition effect under 250℃.
Phosphonates AntiscalantsSpecification:
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Items |
Index |
|
|
Appearance |
White powder |
Colorless to yellowish transparent liquid |
|
Active content (HEDP)% |
≥ 56.0 |
|
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Active content (HEDP•Na4)% |
≥ 79.9 |
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Fe3+ μg/g ≤ |
20 |
|
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Moisture，% ≤ |
15 |
-- |
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Density (20℃)g/cm3 |
-- |
|
|
PH (1% water solution) |
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Vcycletech DTPMPAApplication scope and method of use：
HEDP•Na4 is widely used in circulating cool water system, medium and low pressure boiler, oil field wat er pipelines as scale and corrosion inhibitor in fields such as electric power, chemical industry, metallurg y, fertilizer, etc.. In light woven industry, HEDP•Na4 is used as detergent for metal and nonmetal. In dyeing industry, HEDP•Na4 is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP•Na4 is used as chelating agent. Daily chemicals additive。
Package and Storage:
Liquid: plastic drum，30kg or 250kg, Solid: 25kg/bag,customers’requirement. Storage for ten months in s hady room and dry place.
Safety Protection:
HEDP•Na4 Weak acidity, Avoid contact with eye and skin, once contacted, flush with water.
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