| Chemical Name | Amino Trimethylene Phosphonic Acid |
|---|---|
| Common Name | ATMP |
| CAS No. | 6419-19-8 |
| Molecular Formula | N(CH2PO3H2)3 |
| Molecular Weight | 300 Kilograms (kg) |
| Appearance | White Liquid |
| Active Content / Purity | 80% |
| Grade | Industrial Grade |
| Solubility | Soluble in water |
| Density | 1.30–1.35 kg/m3 (kg/m3) |
| Refractive Index | 1.35 |
| HS Code | 38249900 |
| Application | Industrial water treatment |
| Refractive Rate | 1.35 |
| Taste | ACIDIC |
| Structural Formula | N(CH2PO3H2)3 |
| Boiling Point | 100 |
| Classification | Inorganic Acids |
| Organic Acid Types | Carboxylic Acid |
| Inorganic Acid Types | Others |
| Purity | 50 % |
| EINECS No | 6419-19-8 |
| Other Names | ATMP (Aminotrimethylene phosphonic acid) |
| Usage | Industrial |
| Melting Point | 100 |
| Raw Material | ATMP (Aminotrimethylene phosphonic acid) |
| Minimum Order Quantity | 100 Kilograms |
|---|---|
| Payment Terms | Cash Advance (CA), Cash in Advance (CID), Cheque |
| Supply Ability | 10000 Kilograms Per Day |
| Delivery Time | 3 Days |
| Sample Policy | Contact us for information regarding our sample policy |
| Packaging Details | 50 KGS |
| Main Domestic Market | All India |
| Certifications | GMP-ISO |
ATMP is an organophosphonic acid compound exhibiting excellent sequestration of metal ions at stoichiometric concentration and threshold inhibition of metal salt precipitation at substoichiometric concentrations The ability of ATMP to deflocculate or disperse solid particles combined with its temperature and hydrolytic stability makes it a versatile ingredient for applications requiring efficient metal ion like FeFe control
ATMP, or Amino Trimethylene Phosphonic Acid, is an organophosphonic acid used across industrial water treatment and process applications to control scale formation and manage dissolved metal ions. Aries Chemical manufactures ATMP (CAS 6419-19-8) at its ISO 9001:2015 certified facility in Vadodara, Gujarat, supplying industrial buyers across boiler, cooling tower, RO plant and oilfield operations pan-India. Get in touch with our technical team for specifications, pricing and supply timelines.
ATMP belongs to the phosphonate family of organophosphonic acids, compounds built around a carbon-phosphorus bond rather than the carbon-oxygen-phosphorus linkage found in phosphate esters. This structural difference is what gives phosphonates their resistance to hydrolysis and their stability under the heat, pH swings and oxidising conditions common in industrial water systems.
Chemically, ATMP carries the molecular formula N(CH2PO3H2)3 and is registered under CAS number 6419-19-8. It acts as a sequestrant at higher, stoichiometric concentrations, binding dissolved metal ions directly, and as a threshold inhibitor at much lower, sub-stoichiometric concentrations, where it interferes with crystal formation rather than binding every ion present.
In practice, this means ATMP is dosed in small amounts within water treatment formulations to keep calcium, magnesium and iron in solution and to slow the nucleation and growth of scale-forming crystals, protecting boilers, cooling systems, RO membranes and process piping from mineral deposits and the corrosion that often follows scale buildup.
At stoichiometric dose levels, ATMP’s phosphonic acid groups form stable complexes with dissolved metal ions such as calcium, magnesium and iron. This complexation keeps the ions in solution rather than allowing them to combine with carbonate, sulphate or hydroxide species and precipitate as scale.
At much lower, sub-stoichiometric doses, ATMP does not need to bind every ion in the system to be effective. Small amounts of the molecule interfere with the nucleation and early crystal growth stages of scale formation, delaying precipitation well beyond what stoichiometric binding alone would predict. This threshold effect is what makes phosphonates like ATMP practical to dose at low ppm levels in large industrial water systems.
ATMP also has a deflocculating effect on fine solid particles, helping keep suspended matter dispersed rather than allowing it to agglomerate and settle as sludge. Combined with its resistance to hydrolysis at elevated temperatures, this supports its role within formulated treatment programmes rather than as a standalone descaling product. It is more accurate to describe ATMP as reducing the formation and deposition of mineral solids within a properly designed system than as removing scale outright.
ATMP is used as a component of formulated water treatment programmes across a wide range of industrial water systems, wherever control of hardness ions and prevention of mineral deposition are operational priorities.
In recirculating cooling systems, ATMP can be included as a phosphonate component alongside dispersants and corrosion inhibitors to help manage scale risk from concentrated hardness ions. For a complete treatment approach to scaling, corrosion and biological growth in cooling systems, see our cooling tower water treatment chemicals range.
Within formulated boiler treatment programmes, ATMP contributes scale and metal-ion control alongside oxygen scavengers, pH adjusters and other treatment components, rather than functioning as a complete boiler treatment on its own. See our boiler water treatment chemicals for the full programme approach.
ATMP is also used in oilfield water injection and produced water applications, where it helps manage scale risk from the high mineral content typical of oilfield brines.
ATMP’s sequestration properties make it useful as a component in industrial cleaning formulations, where controlling metal ions helps maintain cleaning performance and prevents redeposition of dissolved minerals.
ATMP is also used in metal treatment and electroplating baths, and in paper, pulp and textile processing, where consistent control of water hardness supports process stability.
Scale forms when dissolved minerals in water, most commonly calcium and magnesium carbonates and sulphates, exceed their solubility limit and begin to crystallise on hot or turbulent surfaces such as boiler tubes, cooling tower fill and heat exchanger walls. This typically happens as water evaporates or heats, concentrating the dissolved solids until the water becomes supersaturated.
ATMP interrupts this process at the nucleation and early crystal growth stage, reducing the rate at which stable scale crystals form and attach to equipment surfaces. The degree of protection actually achieved depends on several site-specific factors, including feed water hardness, operating temperature, pH, the presence of competing ions, the overall treatment formulation, and the dosing strategy used. Because performance varies by system, Aries does not publish a universal dosage rate for ATMP; recommended dosing should be established through water analysis and discussed with our technical team for each application.
Product | Primary Strength | When It May Be Considered |
ATMP | Scale inhibition and metal-ion control | General industrial water treatment formulations |
HEDP | Scale inhibition, strong high-temperature stability | Systems where stability at very high temperatures is the priority |
PBTC | Scale inhibition with strong iron dispersion | High-temperature recirculating and desalination pretreatment systems |
DTPMPA | Strong chelation across five phosphonate groups | Harder water systems needing stronger multi-ion control |
For product-level detail on the alternatives, see our PBTC Chemical and DTPMPA Chemicals pages.
Aries Chemical currently lists ATMP in industrial grade, supplied as a liquid. Figures for active content, packaging size, minimum order quantity and supply capacity are shown differently across the two existing ATMP pages and should be confirmed against the current COA and sales data before this page goes live, rather than carried over from either page as-is.
Aries Chemical supports ATMP orders with product specification information and can provide Technical Data Sheets (TDS), Safety Data Sheets (SDS) and batch Certificates of Analysis (COA) on request, subject to current documentation availability for this grade. Our technical team is available to discuss dosing strategy, compatibility with existing treatment programmes, and packaging requirements before you place an order.
Why Choose Aries Chemical for ATMP?
Aries Chemical is an ISO 9001:2015 certified water treatment and specialty chemicals manufacturer based in Vadodara, Gujarat, supplying industrial buyers across India. Our phosphonate range, including ATMP, HEDP, PBTC, DTPMPA and PAPEMPA, is produced under controlled manufacturing conditions with in-house testing to support consistent active content and quality across batches. Read more About Us. Our team can also advise on selecting between phosphonate grades depending on your water hardness, temperature range, pH and treatment programme design.
ATMP, or Amino Trimethylene Phosphonic Acid, is an organophosphonic acid (CAS 6419-19-8) used in industrial water treatment to control scale formation and sequester dissolved metal ions.
ATMP is used in boiler, cooling tower, RO plant and oilfield water treatment formulations, as well as in select industrial cleaning and metal treatment applications, to manage scale and metal-ion related deposition.
Yes. ATMP functions as a threshold scale inhibitor at low doses and as a metal-ion sequestrant at higher concentrations.
ATMP interferes with the nucleation and early crystal growth stages of mineral scale, delaying precipitation, and it binds dissolved metal ions such as calcium, magnesium and iron to help keep them in solution.
ATMP is registered under CAS number 6419-19-8.
Both are phosphonate scale inhibitors. HEDP offers particularly strong stability at very high temperatures, while ATMP is a general-purpose option for scale and corrosion control across a broader range of industrial water systems.
PBTC provides stronger iron dispersion and hydrolytic stability, making it well suited to high-temperature recirculating and desalination systems, while ATMP is typically used more broadly across boiler, cooling and oilfield applications.
Please share your required quantity, application (boiler, cooling tower, RO, oilfield or other), preferred grade or active content, physical form, packaging requirement and delivery location so our team can prepare an accurate quote.
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Aries Chemicals is an ISO 9001:2015 certified water treatment and specialty chemicals company, delivering reliable and performance-driven chemical solutions to a wide range of industries.
