High-Purity Solvents, Water Treatments

Bis (Hexamethylene Triamine Penta (Methylenephosphonic Acid)) (BHMTPMPA)

Bis(hexamethylene triamine penta(methylenephosphonic acid)), commonly known as BHMTPMPA (CAS: 34690-00-1), is a high-performance, multifunctional organic phosphonic acid scale inhibitor and dispersant. It is structurally engineered with multiple phosphonic acid functional groups, providing it with exceptional chelating capabilities for various metal ions, including calcium, magnesium, iron, and barium. BHMTPMPA is specifically designed to outperform conventional phosphonates in harsh industrial environments characterized by high hardness, high alkalinity, and elevated temperatures. Its “threshold effect” allows for effective scale inhibition at substoichiometric concentrations. Furthermore, BHMTPMPA exhibits excellent thermal stability, remaining effective at temperatures exceeding 120°C, and maintains its chemical integrity across a broad pH spectrum. This makes it an indispensable additive in industrial water treatment, oilfield operations, and textile processing, where it prevents the formation of scale and provides superior dispersion of existing mineral deposits, ensuring operational efficiency and equipment longevity.

Attributes

Key Features and Benefits

High Efficiency Scale Inhibition: Provides superior protection against calcium carbonate, calcium sulfate, and barium sulfate scales, even in high-concentration systems.
Superior Thermal Stability: Maintains structural integrity and inhibitory performance in high-temperature environments (up to 120°C), outperforming ATMP or HEDP.
Exceptional Chelating Power: Forms stable complexes with iron, copper, and zinc ions, preventing catalytic oxidation and staining in industrial processes.
Excellent Salt Tolerance: Remains soluble and active in high-salinity brines, making it ideal for oilfield water injection.
Dual Functionality: Acts simultaneously as a potent scale inhibitor and a high-efficiency dispersant for sludge and suspended solids.

Specifications

Technical Highlights

Chemical Identity: A member of the nitrogen-containing organic phosphonic acid family, often supplied as a 40–50% aqueous solution.
Molecular Formula: Approximately C₁₇H₄₄N₃O₁₅P₅ (for the acid form).
Threshold Effect: Demonstrates high efficiency at low dosages, disrupting crystal growth kinetics at the molecular level.
Stability to Hydrolysis: Highly resistant to chemical breakdown in both acidic and alkaline conditions.
Synergistic Effects: Exhibits excellent compatibility and synergy when formulated with polycarboxylates, surfactants, and zinc salts.
Environmental Note: Requires lower active dosages compared to inorganic phosphates, reducing the overall phosphorus load in effluent.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Industrial Cooling Systems: Used in recirculating cooling water towers and heat exchangers to prevent mineral scaling and fouling.
Oilfield Operations: Applied in water injection systems, squeeze treatments, and offshore production to manage high-salinity scale issues.
Textile Industry: Serves as a stabilizer for hydrogen peroxide in bleaching baths and as a metal ion sequestrant in scouring.
Pulp and Paper: Improves bleaching efficiency by sequestering transition metals that cause peroxide decomposition.
Industrial Cleaners: Incorporated into heavy-duty detergents and metal surface cleaners for hard-water mineral control.
Boiler Water Treatment: Utilized in low to medium-pressure boilers to prevent scale deposition on heating surfaces.
Safety Note: *BHMTPMPA is an acidic material. Standard industrial safety protocols should be followed, including the use of chemical-resistant gloves and goggles. Consult the specific Material Safety Data Sheet (MSDS) for detailed handling and toxicity information.*