Synonyms: Tetrasodium etidronate
CAS No.: 29329-71-3 (x-Na), 3794-83-0
(4-Na)
Molecular Formula: C2H4O7P2Na4
Molecular weight: 294
Structural Formula:
Properties:
Dequest
2016 is the sodium salt of Dequest 2010, 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.
The
solid HEDP•Na4 is white powder, soluble in water, easily deliquescence,
suitable for use in winter and freezing districts. It is a kind
of organophorphonic 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℃.
HEDP•Na4
is widely used in circulating cool water system, medium and low
pressure boiler, oil field water pipelines as scale and corrosion
inhibitor in fields such as electric power, chemical industry, metallurgy,
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.
Specification:
| Items |
Index |
| Appearance |
Colorless to yellowish transparent liquid |
White
powder |
| Active content (HEDP)% |
20.3-21.7 |
60.0
min |
| Active content (HEDP•Na4)% |
29.0-31.0 |
85.0
min |
| Total phosphoric
acid (as PO43-)
% |
18.4-20.4 |
55.0 min |
| Fe, mg/L |
20.0
max |
35.0
max |
| Moisture，% |
-- |
9.0
max |
| Density (20℃)g/cm3 |
1.26-1.36 |
-- |
| PH (1% water solution) |
10.0-12.0 |
11.0-12.0 |
Package and Storage:
Liquid: 200L plastic drum,IBC(1000L),customers’ requirement.
Solid: 25kg/bag,customers’ requirement. Storage for ten months in shady room and dry place.
Safety Protection:
Weak acidity, Avoid contact with eye and skin, once
contacted, flush with water.
