Amino tris(methylene phosphonic acid)

Water treatment agent

Amino tris(methylene phosphonic acid), its solid form is crystalline powder, soluble in water, hygroscopic, has excellent chelation, low threshold inhibition and lattice distortion. It has excellent scale inhibition below 200 ℃, low toxicity, good thermal stability, Amino tris(methylene phosphonic acid) can be dissociated into six positive and negative ions in the water, and can form a stable chelate with a variety of metal ions such as iron, copper, aluminum, zinc, calcium, magnesium, etc. It has a more preferable scale inhibition effect on carbonate . And it has good synergy with the polyphosphate, polycarboxylate, nitrite. There are good inhibition when in 40mg/L.

Uses

It is used for power plants, refineries, petrochemicals, fertilizer plant cooling water, oil field injection water system,particularly suitable for hard high-calcium, low concentration multiple systems, such as power plants and high hardness high salinity, bad water quality conditions of the oil pipeline inhibitors,which may decrease the risk of corrosion and scaling of metal equipment and pipeline. In the textile printing and dyeing industry,Amino tris(methylene phosphonic acid) is used as a metal ion chelating agent, metal surface treatment agent.
The above information is edited by the chemicalbook of Tian Ye.

Instructions

Amino tris(methylene phosphonic acid) is often used with other organic acid, polylactic acid or salt to form organic water treatment agents for circulating cooling water systems under a variety of different water quality conditions. The amount of 1~20mg/L is preferred; in an amount of 20~60mg/L when used as a corrosion inhibitor .
Amino tris(methylene phosphonic acid)is acidic, pay attention to labor protection, should avoid contact with eye and skin, once contacted, flush with plenty of water.

Reference quality standards

tem Index
In line with HG/T 2841-1997 in line with HG/T2841-2005
Appearance colorless or light yellow transparent liquid white crystalline powder
Active content (ATMP dollars)% ≥ 50.0 50.0 95.0
Amino tris(methylene phosphonic acid)content% ≥-40.0 88.0
Phosphite (in terms PO33-)% ≤ 5.0 3.5-
Phosphate (PO43-to count)% ≤ 1.0 0.8 0.8
Chloride (Cl-dollars)% ≤ 3.5 2.0 1.0
Iron (with Fe2 +) content mg/L ≤-20.0 20.0
Density (20 ℃) g/cm3 ≥ 1.28 1.30- pH (1% aqueous solution) 1.5-2.5 1.5-2.5 2.0

Usage

Used for the scale prevention of cooling water system, oil pipeline and boiler; Used as the scale inhibitor for the oil pipeline with high hardness, high salinity and bad water quality; Used as scale inhibitor and corrosion inhibitor for the treatment of cooling water, boiler water, oil field water; Used for circulating cooling water of thermal power plant and an oil refinery.

Chemical Properties

colourless liquid

Uses

A powerful complexing agent. A potent acid sphingomyelinase inhibitor.

Uses

Nitrilotris(methylene)triphosphonic acid solution was used to study the mechanism of inhibition of cement hydration by phosphonic acid.

Uses

Nitrilotri(methylphosphonic acid) is a common chelating agent used in synthetic chemistry. Some of the other applications include:

• Preparation of hexagonal porous three-dimensional structures encapsulating a template, layered structures with intercalated templates or linear polymers.
• Synthesis of metal-organic frameworks in combination with uranyl nitrate.
• Preparation of ingredient of anticorrosive protective coatings on the steel surface.
• ATMP can also be employed as a scale inhibitor during squeeze treatments in oilfield operations.

Definition

ChEBI: [Nitrilotris(methylene)]trisphosphonic acid is a phosphonoacetic acid.

General Description

Nitrilotris(methylene)triphosphonic acid solution is an antiscalant and can be removed form membrane concentrates by iron-coated waste filtration sand. It is a cement retarder. It reacts with the aluminum surface to form a coating which is an effective inhibitor of the reaction of evaporated aluminum thin films on glass or silicon with deionized water.

Flammability and Explosibility

Not classified

Synthesis

(1) 15g of yellow phosphorus into the nitrogen deoxygenated closed reactor;

(2) heating to 45 to the reactor into a small amount of high purity oxygen, in the insufficient oxygen incomplete combustion, in the closed reactor to get the phosphorus trioxide (P2O3);

(3) to the closed reactor to add 90g of water, 40g of ammonium chloride, at 20 , stirring Mixed 60min, stirring and then drop 100g mass fraction of 37% formaldehyde solution, drop after heating to 50 , the reaction 2h, and then 1.5 / min heating to 110 , the reaction 1h;

(4) reaction is complete after controlling the temperature of 125 for distillation, to be free of material evaporation can be obtained chlorine-based trimethylene forklift phosphonic acid.

Toxics Screening Level

Therefore, the screening level is being established under R232(i) at 0.1 μg/m3 with annual averaging.