Description

2,5-Dihydroxy-1,4-Benzenediphosphonic Acid is a specialized organophosphorus compound featuring a hydroquinone core functionalized with two phosphonic acid groups. This unique structure makes it a highly effective chelating agent and scale inhibitor, particularly for metal ions like calcium and iron. It is primarily utilized in industrial water treatment, oilfield chemistry, and as a key intermediate for synthesizing advanced functional materials. Our supply ensures consistent high purity and reliable performance for demanding technical applications.

Application

• Industrial Water Treatment: Acts as a superior scale and corrosion inhibitor in cooling water, boiler water, and reverse osmosis systems.
• Oilfield Chemicals: Used in scale squeeze treatments and as a component in drilling fluid additives to control mineral deposition.
• Detergent & Cleaning Formulations: Serves as a builder and chelating agent to sequester hardness ions and enhance cleaning efficiency.
• Personal Care Products: Employed in stabilizer systems and as a chelant in certain cosmetic and personal care formulations.
• Textile & Pulp Processing: Functions as a peroxide stabilizer and metal ion control agent in bleaching and dyeing processes.
• Chemical Synthesis: A valuable intermediate for producing more complex phosphonate derivatives, metal-organic frameworks (MOFs), and functional polymers.
• Agriculture: Can be used in certain fertilizer and micronutrient delivery systems due to its chelation properties.

Basic Information

Product Name	2,5-Dihydroxy-1,4-Benzenediphosphonic Acid
CAS No.	91633-16-8
Molecular Formula	C6H8O8P2
Molecular Weight	270.07 g/mol
Synonyms	1,4-Dihydroxy-2,5-benzenediphosphonic Acid; DHBDP; 2,5-Dihydroxy-p-phenylenediphosphonic Acid; Tetrasodium 2,5-Dihydroxy-1,4-Benzenediphosphonate (salt form); 1,4-Benzenediphosphonic acid, 2,5-dihydroxy-; Dequest 2060S (related trade product); Hydroquinone Diphosphonic Acid
EINECS	Contact for details

Quality Control

Our production of 2,5-Dihydroxy-1,4-Benzenediphosphonic Acid adheres to stringent quality management protocols. Every batch is analyzed to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee supply consistency and performance reliability for your 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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture which may affect quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 2.0%
pH (1% Solution)	2.0 - 4.0
Heavy Metals (as Pb)	≤ 20 ppm

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