| Customization: | Available |
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| Appearance: | Powder/Liquid |
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Description:
HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds. It can dissolve the oxidized materials on these metals' surfaces. HEDP shows excellent scale and corrosion inhibition effects under temperature 250ºC. HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlo rine oxidation tolerance are better than that of other organophosphoric acids (salt). HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.
Application:
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.
HEDP is a scale and synergistic corrosion inhibitor for iron rust and mineral scale from pipes of cooling circulation water units and boilers; Metal chelateagent for color fixing and bleaching in textile; Complexing agent for electronplate and scale cleaning agent for metals.
| Index | HEDP 60% | HEDP 90% |
| Appearance | Clear, Colorless to pale yellow aqueous solution | White crystal powder |
| Active content (HEDP) by wt % | 58.0-62.0 | 90.0 min |
| Active content (HEDP·H2O) by wt % | - | 98.0 min |
| Phos phorous acid (as PO3 3-) by wt % | 2.0 max | 0.8 max |
| Phos phoric acid (as PO4 3-) by wt % | 0.8 max | 0.5 max |
| Chloride (as Cl-) by wt % | 0.02 max | 0.01 max |
| pH (1% water solution) | 2.0 max | 2.0 max |
| Density (20ºC) g/cm3 | 1.40 min | - |
| Fe by mg/L | 20.0 max | 10.0 max |
| Ca sequestration by mg CaCO3/g | 500.0 min | - |
Packaging:
Shipping:
Q1:May I get one simple before placing order?
For those high value products, you just need to freight and certain productcost. When we both cooperate for some times or when you are our VIPcustomer, free sample will be offered when you need.
Q2:Which payment is available for your company?
Re: T/T, L/C trade insurance. You can choose the one which isconvenient for you.
Q3.:How and when can l get my goods after payment?
Re: For small quantity products, they will be delivered to you byinternational courier(DHL, FedEx, TNT etc.) or by air. Usually it will cost3-5days that you can get the goods after delivery.For large quantityproducts,shipping by see is worthwhile.lt will cost days to weeks to come toyour destination port, which depends on where the port is.
Q4: Is there any possible to use my appointed label or package?
Re: Yes. lf needed, we'd like to use label or package according to yourrequirement.
Q5: How can you guarantee the goods you offer is qualified?
Re: We always believe honesty and responsibility are basis of onecompany, so whatever products we provide for you all are qualified. We willhave goods tested and provide COA before delivery for sure.
After Sales Service:
NO.1.Our company guarantes that the products that leave the factory are produced and inspected accrding to the relevant national standards and the ungualitfed productswll never leave the factory. Guarantee the strict implementation and fulfilment ofproduct quality, and strictly implement relevant regulations on product afer-salesservice.
NO.2. the customer raises objection to the quality ofou company's products, we promises to respond within 24 hours afer reciving the user's objection Ifthe quality ofour company's products does not meet the promise, we are willing to refund the payment.
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