AMINOTRIMETHYLENE PHOSPHONIC ACID- ▸ Scale inhibition: Anti-scaling agent in cooling and process water.
- ▸ Corrosion inhibition: Corrosion inhibitor in water-treatment programs.
- ▸ Chelation/sequestration: Sequesters metal ions; deflocculant in industrial systems.
- ▸ Bleach stabilization: Stabilizes peroxide bleaching solutions.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →
Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.
Amino trimethylene phosphonic acid (CAS 6419-19-8, C3H12NO9P3) is an organophosphonate sequestrant. It is used mainly as a chelating/sequestering and deflocculant agent and as a scale and corrosion inhibitor in industrial water treatment, and as a stabilizer for peroxide bleaching solutions in textile and paper processing.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 229-146-5
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Solutions Using This Product
Process-solution guides on this site that specify this chemistry:
- Preventing Scale in Drip Irrigation Lines (Agriculture)
- Scale Inhibitors for Oilfield & Injection Systems (Oil, Gas & Mining)
- Cooling Tower Scale Control: Antiscalants & Inhibitors (Water Treatment)
Frequently Asked Questions
What is the use of ATMP chemical?
Amino trimethylene phosphonic acid (ATMP, CAS 6419-19-8) is an organophosphonate used mainly as a scale and corrosion inhibitor in industrial water treatment. It also functions as a chelating/sequestering agent and deflocculant and as a stabilizer for peroxide bleaching solutions.
What chemical is ATMP?
ATMP is amino trimethylene phosphonic acid, formula C3H12NO9P3 (CAS 6419-19-8), a nitrogen-centered organophosphonate sequestrant. The full name is amino trimethylene phosphonic acid.
How does ATMP prevent scale in water systems?
ATMP sequesters calcium, magnesium, and other metal ions and disrupts crystal growth at sub-stoichiometric (threshold) dosages, keeping hardness salts from depositing as scale on heat-transfer surfaces in cooling and process water.
What grades and forms of ATMP are available?
ATMP is commonly supplied as an aqueous solution at various active concentrations and as a solid/powder form. Specify the active content and physical form you need so we quote the correct material with a conforming CoA.
What is the HS code for amino trimethylene phosphonic acid?
ATMP classifies under HS 2931.49 (non-halogenated organo-phosphorus derivatives, other). RawSource ships bulk in drums, totes, and IBCs; request a bulk quote with SDS and CoA for your volume and destination.
What is the REACH and TSCA regulatory status of Amino Trimethylene Phosphonic Acid (ATMP)?
Amino Trimethylene Phosphonic Acid (ATMP) (CAS 6419-19-8) is subject to U.S. TSCA Inventory requirements; supplying it into the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify a third-party supplier's registrations — buyers should require documented TSCA and REACH compliance for their jurisdiction and volume (EC 229-146-5).