High Efficiency Catalyst for Oil Industry Water Treatment Chemicals HEDP 60% 90%
CAS No. 2809-21-4
EINECS No. 220-552-8
Molecular Formula: C2H8O7P2
Molecular weight: 206.02
Chemical Name: 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)
Other Name: Etidronic Acid
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Appearance |
Clear, Colorless to pale yellow aqueous solution |
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Active content (HEDP)% |
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Active content (HEDP，H2O)% |
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Phosphorous acid (as PO33-)% |
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Phosphoric acid (as PO43- )% |
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Chloride (as Cl-)% |
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pH (1% water solution) |
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Density (20≧)g/cm3 |
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Colour APHA (Hazen) |
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Ca sequestration (mg CaCO3/g) |
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Usages
HEDP is used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc..
In light woven industry, HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP is used as chelating agent.
The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDP is used together with polycarboxylic acid.
Packing and delivery
HEDP 60%: 25L or 200L plastic drum, IBC(1000L), customers¨ requirement.
HEDP 90%: 25kg/bag, customers¨ requirement.
Storage for ten months in room shady and dry place.
Acidity, Avoid contact with eye and skin, once contacted, flush with water.
