Description

Phosphonic Acid, (Hexahydro-1H-Azepin-1-Yl)-, Cyclic Diester With Pentaerythritol is a specialized organophosphorus compound that functions as a highly effective chelating agent and scale inhibitor. Its unique cyclic structure provides superior thermal and hydrolytic stability compared to linear phosphonates, making it a critical performance additive in demanding industrial water treatment formulations. This chemical is essential for manufacturers and formulators in the water treatment, oilfield, and detergent industries who require robust solutions for controlling scale and corrosion under extreme conditions.

Application

• Industrial Water Treatment: A key component in cooling water and boiler water treatment programs for the inhibition of calcium carbonate, calcium sulfate, and barium sulfate scale.
• Oilfield Chemicals: Used in scale inhibitor formulations for squeeze treatments and topside applications to prevent mineral scale deposition in downhole and production equipment.
• Detergent & Cleaning Formulations: Acts as a builder and sequestrant to enhance cleaning efficiency by inactivating water hardness ions (Ca²⁺, Mg²⁺) and preventing soap scum.
• Pulp & Paper Processing: Employed as a dispersant and chelant to control scale in black liquor evaporators and improve bleaching efficiency.
• Textile Auxiliaries: Used in dyeing and finishing baths to sequester metal ions that can interfere with processes and affect color quality.
• Personal Care Products: Incorporated as a stabilizer and chelating agent in certain cosmetic and personal care formulations.

Basic Information

Product Name	Phosphonic Acid, (Hexahydro-1H-Azepin-1-Yl)-, Cyclic Diester With Pentaerythritol
CAS No.	19341-49-2
Molecular Formula	C15H28N2O6P2
Molecular Weight	418.34 g/mol
Synonyms	1-Azepanephosphonic Acid, P,P'-(2,2-Bis(hydroxymethyl)-1,3-propanediyl) Ester; P,P'-(2,2-Bis(hydroxymethyl)propane-1,3-diyl) Bis(1-azepanephosphonate); P,P'-(2,2-Bis(hydroxymethyl)-1,3-propanediyl) Bis(hexahydro-1H-azepine-1-phosphonate); Hexahydroazepinyl Phosphonate Pentaerythritol Diester; Pentaerythritol Bis(hexahydro-1H-azepine-1-phosphonate); PBHAP; Azepanylphosphonate-Pentaerythritol Adduct; Water Treatment Scale Inhibitor 19341-49-2
EINECS	Contact for details

Quality Control

Our production of Phosphonic Acid, (Hexahydro-1H-Azepin-1-Yl)-, Cyclic Diester With Pentaerythritol adheres to a stringent quality management system to ensure batch-to-batch consistency and performance reliability. The product is manufactured and tested according to relevant industry standards for water treatment chemicals. A comprehensive Certificate of Analysis (COA) detailing purity, active content, and key physical-chemical parameters is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); ensure containers are kept tightly sealed when not in use to prevent absorption of atmospheric moisture which may affect product quality. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (Active Content)	≥ 50.0 % (in aqueous solution)
pH (1% aqueous solution)	2.0 - 4.0
Density (20°C)	1.20 - 1.30 g/cm³
Solubility	Miscible with water

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.