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  • Name: ATMP
  • ID: a97
  • Time: 2015-11-19
  • Views : 96


Name:Amino Trimethylene Phosphonic Acid
CAS No.:6419-19-8
Molecular Formula:N(CH2PO3H2)3
Molecular weight:299.05
Structural Formula:

ATMP has excellent chelation, low threshold inhibition and lattice distortion ability. It can prevent scale formation, calcium carbonate in particular, in water system. ATMP has good chemical stability and is hard to be hydrolyzed in water system. At high concentration, it has good corrosion inhibition.
ATMP is used in industrial circulating cool water system and oilfield water pipeline in fields of thermal power plant and oil refinery plant. ATMP can decrease scale formation and inhibit corrosion of metal equipment and pipeline. ATMP can be used as chelating agent in woven and dyeing industries and as metal surface treatment agent.


Item Specification
Appearance Colorless or pale yellow transparent liquid
Active content % 50Min
Phosphorous Acid(as PO33-)% 3.5Max
Phosphorous Acid(as PO43-)% 0.8Max
Chloride  (as Cl-)% 2.0Max
PH value(1% solution) 2.0Max
Density (20℃)g/cm3 1.33Min
Ca chelating value mg/g 400Min
Iron(as Fe),ppm 20Max
Colour APHA(Hazen) 40.0Max

ATMP is usually used together with organophosphoric acid, polycarboxylic acid and salt to built all organic alkaline water treatment agent. ATMP can be used in many different circulating cool water system. The dosage of 1-20mg/L is recommended. As corrosion inhibitor, the dosage of 20-60mg/L is preferred.

Package and Storage:
ATMP liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required Storage for ten months in room shady and dry place.

Safety Protection:
Acidity, Avoid contact with eye and skin, once contacted, flush with water.