Description

Hydroquinone-2,5-Disulfonic Acid, Dipotassium Salt is a high-purity, water-soluble derivative of hydroquinone, primarily utilized as a key intermediate in the synthesis of specialty chemicals and dyes. Its significance lies in its dual sulfonic acid groups, which enhance solubility and reactivity, making it a versatile building block for creating more complex molecules. This compound is essential for manufacturers in the dye and pigment, pharmaceutical, and photographic chemical industries, where precise chemical functionality is required.

Application

• Dye and Pigment Intermediate: A crucial precursor in the synthesis of water-soluble azo dyes and specialty pigments.
• Photographic Chemical: Used in the formulation of developers and other photo-sensitive compounds.
• Pharmaceutical Synthesis: Serves as a building block for certain active pharmaceutical ingredients (APIs) and fine chemicals.
• Chemical Research & Development: Employed as a standard or reagent in organic synthesis and analytical chemistry.
• Electroplating Additive: Can function as a stabilizing or brightening agent in specific electroplating baths.
• Polymer Modification: Used to introduce sulfonate groups into polymers to alter solubility and ionic properties.

Basic Information

Product Name	Hydroquinone-2,5-Disulfonic Acid, Dipotassium Salt
CAS No.	15763-57-2
Molecular Formula	C6H4K2O8S2
Molecular Weight	354.42 g/mol
Synonyms	1,4-Dihydroxybenzene-2,5-disulfonic acid dipotassium salt; Dipotassium 2,5-dihydroxy-1,4-benzenedisulfonate; Hydroquinonedisulfonic acid dipotassium salt; 2,5-Dihydroxy-1,4-benzenedisulfonic acid dipotassium salt; Kaliumhydrochinondisulfonat (German); HQDS Dipotassium Salt; Potassium hydroquinonedisulfonate
EINECS	239-863-6

Quality Control

Our Hydroquinone-2,5-Disulfonic Acid, Dipotassium Salt is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and composition. Certificates of Analysis (COA) documenting key parameters are available for every shipment to support your quality assurance and regulatory needs.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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