Methylene Phosphonic Acid (DTPMP)
- CAS Number: 15827-60-8
- Chemical Formula: C9H28N3O15P5
- MOQ: 1000KG
- Shelf Life: 2 years
- Types: Powder
- Synonyms: Diethylenetriamine Penta, Methylenephosphonic Acid, 1-Hydroxy-1-phosphonoethane
Product Description
What Is Methylene Phosphonic Acid?
Methylene Phosphonic Acid is an organophosphorus compound widely used in water treatment, corrosion inhibition, detergents, and agricultural applications. It effectively forms complexes with metal ions and offers excellent anti-scaling and anti-corrosion properties. This makes it ideal for use in industrial cleaning, oilfield chemicals, and as an additive in various formulations.
Preparation Method:
Methylene Phosphonic Acid is typically synthesized through the following methods:
- Direct Phosphorylation: Reacting formaldehyde with phosphoric acid under mild conditions to produce the acid.
- Chlorination: Chloromethyl phosphonic acid is hydrolyzed to yield Methylene Phosphonic Acid.
- Reduction: Methylphosphonic acid reacts with reducing agents, generating Methylene Phosphonic Acid under suitable conditions.
Related Parameters:
| Items | Standards |
| Active acid | 50% |
| Phosphorous acid(as PO3) | ≤ 3.0 |
| Chloride(as Cl) | 12%-17% |
| pH (1%water solution) | ≤ 2.0 |
| Density | 1.35g/c㎥ -1.45g/c㎥ |
| Fe Ions (as Fe) | ≤ 35ppm |
Recommended Dosage of Methylene Phosphonic Acid:
| Applications | Dosage |
| Water Treatment | 5ppm–20 ppm |
| Corrosion Inhibition | 0.1%–5% |
| Detergents & Cleaning Products | 0.5%–3% |
| Agricultural Chemicals | 1kg/ha–10 kg/ha |
| Industrial Cleaning | 1%–5% |
Methylene Phosphonic Acid Has Wide Range of Uses:
- Water Treatment: Methylene Phosphonic Acid prevents scale in boilers, cooling towers, and pipelines, improving efficiency and reducing costs.
- Corrosion Inhibition: It is employed to prevent metal corrosion in industrial systems such as water cooling and oil pipelines.
- Detergents & Cleaning Products: The acid enhances detergent and cleaning agent performance.
- Agricultural Chemicals: Methylene Phosphonic Acid acts as a stabilizer in agricultural formulations, improving their efficiency and stability.
- Industrial Cleaning: It removes rust, scale, and contaminants from metal surfaces in cleaning agents.
User Asked Question:
Q: What are the differences between Methylene Phosphonic Acid and Phosphoric Acid?
A: Methylene Phosphonic Acid is more efficient in preventing scale and corrosion than Phosphoric Acid. While Phosphoric Acid is mainly used for cleaning and acid washing, Methylene Phosphonic Acid excels in water treatment and industrial applications, offering better protection against scale buildup and metal corrosion.
