CAS No. 29329-71-3 (x-Na), 3794-83-0 (4-Na) Synonyms: Tetrasodium etidronate
Molecular Formula: C2H4O7P2Na4 Molecular weight: 294
HEDP•Na4 is the sodium salt of HEDP, HEDP•Na4 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.
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Items |
Index |
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Appearance |
Colorless to yellowish transparent liquid |
White powder |
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Active content (HEDP)% |
20.3-21.7 |
60.0 min |
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Active content (HEDP•Na4)% |
29.0-31.0 |
85.0 min |
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Total phosphoric acid (as PO43-)% |
18.4-20.4 |
55.0 min |
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Fe, mg/L |
20.0 max |
35.0 max |
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Moisture，% |
-- |
9.0 max |
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Density (20℃)g/cm3 |
1.26-1.36 |
-- |
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PH (1% water solution) |
10.0-12.0 |
11.0-12.0 |
Liquid: 200L plastic drum, IBC(1000L), customers' requirement.
Solid: 25kg/bag, customers' requirement. Storage for ten months in shady room and dry place.
Weak acidity, Avoid contact with eye and skin, once contacted, flush with water.
Tetrasodium (1-hydroxyethylidene)bisphosphonate
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