Products Description
HEDP·4Na
HEDP.Na4 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
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.
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.
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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 |
01
High Quality
Ensure the real effect, packaging safety,
02
Advanced Equipment
Social security complete, can do a variety of testing and analysis, welcome to consult
03
Professional Team
Sophisticated experimental team, professional sales, purchase worry-free
04
Custom Service
Products can be customized according to needs
Frequently Asked Questions
Q1:Can I get some samples?
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A: Of course.If you need samples, please contact us.
Q2: How is the Product Quality confirmed before placing orders?
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A: First, we will send the sample for you to test as well as our COA /testing result. Otherwise, we can work with a third-party inspection of your choice.
Q3: What's your MOQ?
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A: Normally, our MOQ is 1kg. But it can be adjusted according to your requirements.
Q4: How about delivery time?
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A: Orders are shipped within 3-5 working days after payment confirmation. (Chinese holiday are NOT included)
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