Amino Trimethylene Phosphonic Acid (ATMP) CAS No. 6419-19-8

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Amino Trimethylene Phosphonic Acid
(ATMP)


CAS No. 6419-19-8

Molecular Formula: N(CH2PO3H2)3
Molecular weight: 299.05
Synonyms:Nitrilo trimethane phosphonic acid, Dequest 2000
Structural Formula:


Properties:

ATMP has excellent chelation, low threshold inhibition and lattice distortion ability. It can prevent scale
formation, calcium carbonate in particular, in water system. It 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. It can decrease scale formation and inhibit corrosion of metal
equipment and pipeline. It can be used as chelating agent in woven and dyeing industries and as metal
surface treatment agent.
Solid ATMP is crystal powder, soluble in water, easily deliquescence, suitable for usage in winter and
freezing districts. Due to its high purity, it can be used in woven dyeing industries and as metal surface

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


Package and Storage:

Liquid:200L plastic drum, IBC(1000L), customers’ requirement.
Solid:25kg inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients.

Storage for ten months in room shady and dry place.


Safety Protection:

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

Specification:

Items

Index

Standard

Solid

Appearance

Clear, Colorless to pale yellow aqueous solution

White crystal powder

Active acid %

50.0 min

95.0 min

Chloride (as Cl- ) %

1.0 max

1.0 min

pH value (1% solution)

2.0 max

2.0 max

Fe, mg/L

10.0 max

20.0 max

Density (20) g/cm3

1.31-1.35

-

Color APHA (Hazen)

30.0 max

-

Ca Sequestration (CaCO3/g)

450.0 min



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