Heliquest H (HEDP/1-Hydroxyethylidene-1,1-diphosphonic acid)
What is Heliquest H?
Heliquest H is a phosphonate chemically known as HEDP (1-Hydroxyethylidene-1,1-diphosphonic acid). The product combines antiscalant performance, strong chelating properties, and corrosion inhibition in a single molecule.
Heliquest H is used in:
- Water treatment
- Industrial cleaning formulations
- Metal ion control in technical systems
- Processes with high temperatures or oxidative conditions
Thanks to its multifunctional nature, HEDP is a widely used additive in systems where scale formation, metal ions, and corrosion need to be controlled simultaneously.
Packaging
IBC
Drum
CAS
2809-21-4
INCI-name
Application
Technical
How is HEDP produced?
HEDP is produced through a controlled chemical synthesis process in which phosphonic acid groups are incorporated into a stable organic structure.
The molecular structure consists of:
- Two phosphonate groups
- One hydroxyl group
- A stable carbon backbone
This structure provides:
- High resistance to oxidation
- Good thermal stability
- Effectiveness across a wide pH range
- Long-lasting performance in technical systems
Compared to traditional chelating agents such as EDTA, HEDP is more resistant to oxidative conditions (for example, in the presence of hydrogen peroxide).
Production is carried out in accordance with European regulations and REACH compliance, with a strong focus on batch consistency and purity.
How does Heliquest H work in a system?
Heliquest H functions as an antiscalant, chelating agent, and corrosion inhibitor.
1. Antiscalant performance
Heliquest H prevents the formation of calcium carbonate and other mineral deposits by:
- Interacting with crystal nuclei
- Disrupting crystal growth
- Reducing adhesion to surfaces
Example:
In a cooling water system, HEDP prevents scale formation on heat exchangers, improving energy efficiency and extending equipment lifetime.
2. Chelation of metal ions
Heliquest H effectively binds calcium, magnesium, and iron ions. This results in:
- Reduced precipitation
- Improved stability of cleaning formulations
- Enhanced performance in hard water
In detergents, HEDP supports surfactant performance by neutralizing interfering metal ions.
3. Corrosion inhibition
Heliquest H forms a protective layer on metal surfaces and reduces corrosion. This is particularly relevant in:
- Circulating water systems
- Boiler systems
- Metal processing operations
4. Stability in oxidative systems
HEDP is more resistant to oxidative conditions than many traditional chelating agents.
Example:
In peroxide-based cleaning systems, Heliquest H retains its functionality where EDTA may degrade more rapidly.
In which industries is Heliquest H used?
Water treatment
- Cooling water systems
- Boiler water systems
- Circulating systems
Heliquest H prevents scale formation while also protecting against corrosion.
Cleaning products
- Household descalers
- Industrial cleaners
- Formulations for hard water
The product enhances cleaning performance and stabilizes detergents.
Industrial processes
- Metal ion control
- High-temperature applications
- Oxidative systems
Technical formulations
- Peroxide-based systems
- Processes with fluctuating pH levels
- Installations where long service life is required
Besides Heliquest H, we have other products in our range. Check it out on our insights page!
Frequently asked questions about Heliquest H (HEDP)
1. What is the difference between HEDP and PBTC?
Both are phosphonates, but:
- HEDP: strong chelating agent + corrosion inhibitor
- PBTC: primarily an antiscalant with limited chelating capacity
HEDP is more multifunctional, while PBTC is often used specifically for scale control.
2. Is Heliquest H better than EDTA?
HEDP is more resistant to oxidation than EDTA and remains stable in peroxide-containing systems. In applications with oxidative conditions, HEDP is often the better choice.
2. Is Heliquest H better than EDTA?
HEDP is more resistant to oxidation than EDTA and remains stable in peroxide-containing systems. In applications with oxidative conditions, HEDP is often the better choice.
4. Can Heliquest H be used at high temperatures?
Yes. The product has good thermal stability and remains effective in systems with elevated temperatures.
Chempri: your partner in Heliquest H
Chempri supplies Heliquest H (HEDP) from Europe, with a focus on:
-
Reliable supply
- Consistent quality
- Technical support for water treatment and cleaning applications
- Product specifications, SDS, and COA
- Flexible batch sizes
At Chempri, we specialize in the production and supply of high-quality oleochemicals and their derivatives, including Heliquest H. Our products are manufactured in modern production facilities and can be tailored to meet specific customer requirements.
Do you have questions or would you like to place an order directly? Contact our sales team.
