ATMP
Amino Trimethylene Phosphonic Acid
CAS NO6419-19-8
Mol. WT.299.05
Mol. FormulaN(CH2PO3H2)3
Structure
- Properties
- Specification
- Usage
- Safety
- Package&Storage
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.
The solid state of ATMP is crystal powder, soluble in water, easily deliquescence, suitable for usage in winter and freezing districts.
| Items |
Index |
| HG/T 2841-1997 |
HG/T 2841-2005 |
|
| Appearance |
Colorless to pale yellow aqueous solution |
White crystal powder |
| Active acid (as ATMP), % |
50.0 min |
50.0 min |
95.0 min |
| ATMP content, % |
—— |
40.0 min |
88.0 min |
| Phosphorous acid (as PO33), % |
5.0 max |
3.5 max |
—— |
| Phosphoric acid (as PO43-), % ≤ |
1.0 max |
0.8 max |
0.8 max |
| pH value (1% solution) |
1.5-2.5 |
1.5-2.5 |
≤2.0 |
| Chloride (as Cl-)% |
3.5 max |
2.0 max |
1.0 max |
| Fe（as Fe3+），ppm |
—— |
2.0 max |
2.0 max |
| Density (20℃)g/cm3 |
1.28 min |
1.30 min |
—— |
| Calcium chelating value，mg/g |
400 min |
400 min |
800 min |
ATMP is usually used together with organophosphoric acid, polycarboxylic acid and salt to build all organic alkaline water treatment agent. ATMP can be used circulating cool water system for different water quality. The dosage of 1-20mg/L is recommended. As corrosion inhibitor, the dosage of 20-60mg/L is preferred.
Acidity. Avoid contact with eye and skin. In case of contact, flush with water immediately.
ATMP liquid: 30Kg/250Kg net in plastic drum.
ATMP solid: 25kg net in plastic woven bag.
Storage for twelve months in shady, cool and dry place with good ventilation.
