Description

Phosphonic Acid, (4-Hydroxyphenyl)-, Monoethyl Ester is an organophosphorus compound that serves as a versatile chemical intermediate. This compound is valued for its ability to introduce the phosphonic acid functional group into more complex molecules, enabling the synthesis of materials with tailored properties. It is primarily sought by manufacturers in the agrochemical, pharmaceutical, and specialty polymer industries for research and production purposes.

Application

• Agrochemical Intermediate: Key building block in the synthesis of novel herbicides, plant growth regulators, and fungicides.
• Pharmaceutical Synthesis: Used as a precursor for developing bisphosphonate drugs and other active pharmaceutical ingredients (APIs) targeting bone metabolism.
• Ligand and Chelating Agent: Serves as a functional ligand in metal coordination chemistry and catalysis due to its phosphonate group.
• Polymer Modification: Incorporated into polymer chains to impart flame retardancy, improve adhesion to mineral surfaces, or modify thermal stability.
• Water Treatment Formulations: Potential component in scale and corrosion inhibitor blends for industrial water systems.
• Research & Development: Essential reagent in organic and medicinal chemistry research for constructing complex molecular architectures.

Basic Information

Product Name	Phosphonic Acid, (4-Hydroxyphenyl)-, Monoethyl Ester
CAS No.	77173-37-6
Molecular Formula	C8H11O5P
Molecular Weight	218.14 g/mol
Synonyms	4-Hydroxyphenylphosphonic Acid Monoethyl Ester; Monoethyl (4-Hydroxyphenyl)phosphonate; Ethyl (4-Hydroxyphenyl)phosphonate; (4-Hydroxyphenyl)phosphonic Acid Ethyl Ester; p-Hydroxyphenylphosphonic Acid Monoethyl Ester; PHPA Monoethyl Ester; CAS 77173-37-6
EINECS	Contact for details

Quality Control

Our production of Phosphonic Acid, (4-Hydroxyphenyl)-, Monoethyl Ester adheres to strict quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request, providing full traceability and quality assurance for your R&D and manufacturing processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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