Potassium Hydroquinonesulfonate CAS 21799-87-1
Potassium Hydroquinonesulfonate for Industrial Applications
Water-soluble powder for photographic developing chemicals, tin-plating formulations and specialty polymers.
Potassium hydroquinonesulfonate is a white to almost white powder or crystalline solid, also known as potassium 2,5-dihydroxybenzenesulfonate. Its principal commercial application is photographic developing solutions. Other documented uses include copolymer films and corrosion-control formulations for aqueous systems.
Unilong supports industrial purchasing by chemical manufacturers, formulators and distributors, including samples for production evaluation and bulk supply enquiries.
Product Details
| Item | Information |
|---|---|
| CAS number | 21799-87-1 |
| Principal synonym | Potassium 2,5-dihydroxybenzenesulfonate |
| Other name | Hydroquinonesulfonic Acid Potassium Salt |
| Molecular formula | C6H5KO5S |
| Molecular weight | Approximately 228.26 g/mol |
| EC number | 244-584-7 |
| Typical appearance | White to almost white powder or crystalline solid |
| Water solubility | Soluble |
| Reported melting/decomposition temperature | Approximately 250–251°C |
Applications
Photographic Developing Chemicals
Potassium hydroquinonesulfonate is a raw material for photographic developing solutions. Silver-halide developer formulations use its hydroquinone functionality as part of the developing chemistry.
This application serves manufacturers of photographic processing chemicals, including concentrates and working solutions. It is a water-soluble solid feedstock for aqueous developer manufacture. The formulation determines its concentration and combination with sulfites, alkalis and other developing agents.
Antioxidant Component for Tin Plating
Tin-plating formulations use potassium hydroquinonesulfonate as an antioxidant additive. Its role is to help limit oxidation of divalent tin to tetravalent tin in the plating solution.
Documented formulations include acidic baths based on stannous methanesulfonate. This application is relevant to producers of tin-plating chemicals and bath additives for metal finishing and electronic-component processing. The required addition rate is specific to the bath composition and operating conditions.
Sulfonated Copolymers and Functional Films
Potassium hydroquinonesulfonate is a monomer feedstock for sulfonated aromatic copolymers. Its phenolic groups participate in suitable polymerization reactions, introducing sulfonated aromatic units into the resulting polymer.
Documented applications include copolymer films and polymer electrolyte membranes. This use serves manufacturers of specialty polymers and functional membrane materials. Polymer composition and subsequent membrane processing determine the final film characteristics.
Aqueous Corrosion-Control Formulations
Corrosion-control formulations for aqueous systems are another documented application. Potassium hydroquinonesulfonate is incorporated as a formulation component for systems selected around the metal, water chemistry and other treatment ingredients.
Storage and Handling
The material is water-soluble and air-sensitive. Keep containers closed after use and limit unnecessary exposure during charging and dispensing.
Storage temperature, protective equipment and handling controls follow the SDS and label supplied with the material.
Supply Support from Unilong
Unilong supports your industrial purchase of potassium hydroquinonesulfonate with manufacturing-site communication, product documents and shipment coordination.
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We help arrange factory visits and connect your audit team with the relevant manufacturing site. Access, audit scope and scheduling are agreed with the manufacturer.
Product Documents & Production Samples
We coordinate available specifications, TDS, SDS and batch COA documents for the material offered. Samples can be arranged for production evaluation before a commercial order.
Pre-Shipment Inspection & Sample Approval
Your appointed inspection provider can inspect the goods before dispatch by arrangement. Where pre-shipment sample approval is agreed, the cargo is held until your approval.
Export Packing & Delivery Follow-Up
We coordinate export packing, shipping marks and shipment documents. Packing and loading photos can be included in agreed shipment records, and our team follows order progress and delivery communication.
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Procurement FAQ
Can you arrange samples for production evaluation?
Yes. Samples can be arranged for evaluation ahead of commercial supply. Quantity and availability depend on the selected material.
What documents can I request?
Product specifications, TDS, SDS and the applicable batch COA. Availability is confirmed for the material offered.
What are the MOQ and lead time?
MOQ and lead time are provided with the current quotation for the order quantity.
Contact Unilong
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