Amino Trimethylene Phosphonic Acid ATMP
CAS No. 6419-19-8
Alias:Aminosanya methyl phosphonic acid, ATMPA,Subnitrotrimethyltriphosphonic acid,Subnitrothylenephosphonic acid
Molecular formula N(CH₂PO₃H₂)₃
Relative molecular mass: 299.05
Structural formula
I. Performance and use:
ATMP has good chelation, low - limit inhibition and lattice distortion. Can prevent the formation of scale in water salt scale, especially the formation of calcium carbonate scale. ATMP is chemically stable in water and is not easily hydrolyzed. At high concentration in water, it has good corrosion inhibition effect.
ATMP is used in circulating cooling water system of thermal power plant, oil refinery and oil field. Can play a role in reducing metal equipment or pipeline corrosion and scaling. ATMP is used as metal ion chelating agent in textile and dyeing industry, and can also be used as metal surface treatment agent.
ATMP solid is white granular, soluble in water, easy to absorb moisture, easy to transport and use, especially suitable for cold areas in winter.
Ⅱ. Technical indicators
|
Item
|
Indicator
|
|
Accord with HG/T 2841-2005
|
Accord with Q/SDTH 0071—2019
|
|
Appearance
|
A colorless or yellowish transparent liquid
|
White crystal
|
|
Active component (ATMP) /%
|
≥50
|
≥95.0
|
|
Amino trimethylenephosphonic acid content /%
|
≥40
|
≥88.0
|
|
Phosphite(PO33-)/%
|
≤3.5
|
--
|
|
Phosphate(PO43-)/%
|
≤0.8
|
≤0.8
|
|
pH(1% Aqueous solution)
|
≤2.0
|
≤2.0
|
|
Density(20℃) /g·cm-3
|
≥1.30
|
--
|
|
Chloride(Cl-)/%
|
≤2.0
|
≤1.0
|
|
Iron(Fe2+)content/mg·L-1
|
≤20.0
|
≤10.0
|
Ⅲ. Use method
ATMP is often combined with other organic phosphonic acids, polycarboxylic acids or salts to form organic water treatment agents, which are used in circulating cooling water systems under different water quality conditions. Dosage of 1 ~ 20mg/L is preferred. When used as corrosion inhibitor, the dosage is 20 ~ 60mg/L.
Ⅳ. Packaging and storage
ATMP liquid is packed in plastic drums of 30kg or 250kg each. ATMP solids are packed in polythene lined plastic woven bags, each bag net weight 25kg, which can also be determined according to the user's needs. Store in indoor cool and ventilated place, moistureproof, strictly prevent insolation, storage period of 12 months.
Ⅴ. Safety protection
ATMP is acidic, pay attention to labor protection when operating, should avoid contact with the skin, eyes, etc., after contact should be immediately washed with plenty of water.
