Description

2-Hydroxyphenyl Dihydrogen Phosphate is an organophosphorus compound that serves as a versatile intermediate and functional additive. Its unique structure, featuring both a phenolic hydroxyl and a phosphate group, makes it valuable for modifying material properties and synthesizing more complex molecules. This product is essential for manufacturers in the polymer, pharmaceutical, and specialty chemical industries seeking to enhance product performance or develop new formulations.

Application

• Polymer Modification: Acts as a reactive flame retardant intermediate or a cross-linking agent for epoxy resins and other thermosetting polymers.
• Pharmaceutical Synthesis: Serves as a key building block (synthon) for the production of active pharmaceutical ingredients (APIs) and prodrugs.
• Metal Surface Treatment: Used in formulating corrosion inhibitors and anti-scaling agents for industrial water treatment and metalworking fluids.
• Adhesive & Coating Formulations: Functions as an adhesion promoter or curing agent to improve the bond strength and durability of coatings.
• Lubricant Additive: Employed as an extreme pressure (EP) additive and anti-wear agent in advanced lubricant formulations.
• Chelating Agent: Utilized for its ability to bind metal ions in various chemical processes and purification steps.

Basic Information

Product Name	2-Hydroxyphenyl Dihydrogen Phosphate
CAS No.	4918-98-3
Molecular Formula	C6H7O5P
Molecular Weight	190.09 g/mol
Synonyms	Phenol, 2-hydroxy-, dihydrogen phosphate; o-Hydroxyphenyl dihydrogen phosphate; 2-Hydroxyphenyl phosphate; Salicyl phosphate; Phosphoric acid mono(2-hydroxyphenyl) ester; o-Hydroxyphenyl phosphoric acid; (2-Hydroxyphenoxy)phosphonic acid
EINECS	225-545-9

Quality Control

Our 2-Hydroxyphenyl Dihydrogen Phosphate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. Certificates of Analysis (COA) documenting these results are provided as standard, ensuring traceability and batch-to-batch consistency for your critical applications.

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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Melting Point	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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