Product: (1-Hydroxyethylidene)Bis-Phosphonic Acid Tetrasodium Salt
CAS NO: 3794-83-0
Molecular formula: C2H4O7P2 Na4
Structure formula:
Properties:
White powder or Colorless to light yellow transparent liquid. Soluble in water, easily deliquescence, suitable for use in winter and freezing districts.
Application:
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:
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Items
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Quality
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Quality
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Appearance
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White powder
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Colorless to light yellow transparent liquid
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Active component (HEDP), %
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56.0 min
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20.3-21.7
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Active component (HEDP•Na4), %
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79.9 min
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29.0-31.0
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Total phosphoric acid (as PO43-), %
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52.0-54.0
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18.4-20.4
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Fe, ppm
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35.0 max
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20 max
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Dry weight loss, %
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15 max
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--
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Density (20?), g/cm3
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--
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1.26-1.36
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PH
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11.0-12.0 (1% water solution)
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10.0-12.0 (as it)
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