Product Details


EDTMP•Na5(Ethylene Diamine Tetra)(Methylene Phosphonic Acid) (Pentasodium Salt)

ETDMP•Na5 is an excellent chelating agent. It has good water solubility, stability, and metal complexing ability. It can form complexes with various ions, including Fe3+, Al3+, Cu2+, Pb2+, Zn2+, etc. EDTMP•Na5 is widely used in textile printing, dyeing, papermaking, water treatment, the food industry, etc. Looking for a quality EDTA chelating agent? Look no further than EDTMP•Na5! Our product is known for its high water solubility and stability, making it ideal for use in a variety of industries. Contact us today to learn more about our products and services!

Product Description

CAS No.: 7651-99-2

EINECS No.: 231-615-4
Molecular Formula: C6H15O12N2P4Na5

Molecular weight: 546.13

Structural Formula:


EDTMP•Na5 Properties:

EDTMP•Na5 is a neutral nitrogenous organic polyphosphoric acid that acts as a cathodic corrosion inhibitor and can be dissolved in water. This compound is non-toxic and pollution-free, boasting good chemical stability, heat resistance, and scale inhibition up to 200℃.
Composed of 8 positive and negative ions, EDTMP•Na5 chelates with multiple metal ions to form a variety of monomeric structures which dissolve in water and prevent the normal crystallization of calcium scale. Furthermore, this product has superior performance against calcium sulfate and barium sulfate scales.
EDTMP•Na5 is ideal for use as a scale inhibitor for circulating water systems or boilers, plus it also functions as an effective chelating agent in non-cyanide electroplating operations and a water softening additive for dyeing processes. Moreover, it has low moisture absorption levels making it easy to transport in cold conditions.


AppearanceAmber transparent liquid
Active content (as EDTMPA)%24.0-26.0
Active content (as EDTMP•Na5)%30.0-32.6
Chloride (Cl-) %2.0 max
Density (20℃) g/cm31.25 min
Fe, mg/L20.0 max
PH (1% water solution)6.0~8.0

EDTMP•Na5 Package and Storage:

It should always be kept in a clean, tightly sealed container and stored in a cool, dry place away from direct sunlight. Optimal packaging conditions, such as the type and size of the container, depend on the amount of product being stored.
Typically in 200L HDPE drum, 1000L IBC, or customers’ requirement. If possible, provide air-tight seals and UV protection—storage for ten months in a dark room and dry place.

Safety Protection:

Avoid contact with the eye and skin; once contacted, flush with water.

Faqs About EDTMP•Na5:

What is EDTMP•Na5?

EDTMP•Na5 is a phosphonate salt that is used as a chelating agent, scale inhibitor, and corrosion inhibitor in water treatment applications.

What are the benefits of using EDTMP•Na5?

EDTMP•Na5 has been shown to be effective in preventing scale buildup and corrosion in water treatment systems. Additionally, EDTMP•Na5 can help to improve the efficiency of water treatment systems by preventing the formation of deposits on surfaces.

How does EDTMP•Na5 work?

EDTMP•Na5 works by binding to metal ions and preventing them from precipitating out of the solution. This prevents scale formation and corrosion on surfaces in contact with water. Additionally, EDTMP•Na5 can help increase metal ions’ solubility, making them easier to remove from water.

What are the side effects of EDTMP•Na5?

EDTMP•Na5 is generally considered to be safe for human health. However, some people may experience skin irritation or allergic reactions when coming into contact with EDTMP•Na5. If you experience any side effects, please consult a healthcare professional.

Where can I buy EDTMP•Na5?

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