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 |
White
powder |
Colorless to yellowish transparent liquid |
| Active content (HEDP)% |
56.0
min |
20.3-21.7 |
| Active content (HEDP•Na4)% |
79.9
min |
29.0-31.0 |
| Total phosphoric
acid (as PO43-)
% |
52.0 min |
18.4-20.4 |
| Fe，mg/L |
35.0
max |
20.0
max |
| Moisture，% |
15
max |
-- |
| Density (20℃)g/cm3 |
-- |
1.26-1.36 |
| PH |
11.0-12.0 (1% water solution) |
10.0-12.0 (as it) |
| Phosphorous Acid % |
|
1.0 max |
| Colour APHA |
|
50.0 max |
Package and Storage:
For liquid: Normally In 250kg net Plastic Drum,
IBC drum can also be used as required. For solid: inner liner polyethylene
(PE) bag, outer plastic woven bag, or confirmed by clients. Storage
for ten months in room shady and dry place.
Safety Protection:
Weak acidity, Avoid contact with eye and skin, once
contacted, flush with water.
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