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Phosphonates Antiscalants, Corrosion Inhibitors and Chelating Agents
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Penta Sodium Salt of Amino Trimethylene Phosphonic Acid (ATMP.Na5)

CAS No. 2235-43-0 EINECE NO. 218-791-8
Molecular Formula C3H7NO9P3Na5 Molecular Weight 409
Structural Formula

ATMP.Na5 Structural Formula

Product Features

ATMP.Na5 is the sodium salt of ATMP, a scale inhibitor in water treatment system, calcium carbonate CaCO3 in particular. ATMP.Na5 applications includes oilfield water treatment, cooling water treatment, boiler water treatment, industrial and institutional cleaners, etc. ATMP.Na5 is an economic scale inhibitor, has good corrosion inhibition with zinc salt and phosphate. ATMP.Na5 is also a good chelating agent.

Technical Specification

Parameter Standard
Appearance Colorless to light yellow transparent liquid
Active content (ATMP), % 27.8-30.7
Active content (ATMP•Na5), % 38.0-42.0
Chloride (as Cl-), % 1.0 max
PH (1% water solution) 10.0-11.0
Fe, mg/L 10 max
Density (20℃), g/cm3 1.38-1.48

Applications & Usage

ATMP.Na5 is mostly used with organophosphoric acid, polycarboxylic acid and salt to form all organic water treatment formulation for various circulating cooling water systems with different water quality conditions. Neutralized form and has excellent CaCO3 scale inhibitor in oilfield applications. Compatible with other additives.

Scale and Corrosion inhibition Performance

CaCO3 inhibition CaSO4 inhibition CaC2O4 inhibition CaF2 inhibition
Excellent Good Very Good Excellent
Calcium Tolerance Iron Control Sequestration Steel corrosion inhibition
Good Yes Good Excellent

Package & Storage

ATMP.Na5 liquid
25L Drum 200L Drum 1000L IBC ISO Tank
Storage for ten months in shady room and dry place.

Hazard & Safety Precaution

Hazard Information Safety Precaution

Not regulated

Once contacted with eye and skin, flush with plenty of clean water.

Alternative Name / Synonyms

  1. Pentasodium hydrogen C,C',C''-nitrilotris(methylphosphonate)