Sodium Hydrosulfide

It supplies sulphide ions into an alkaline system. In flotation that means sulphidising oxidised mineral surfaces so collectors can adsorb, or depressing copper sulphides so molybdenite floats away from them. In effluent treatment it precipitates dissolved metals as low-solubility sulphides. In tanning it is used in the unhairing stage of hide preparation. Dosage and control are process decisions established on your own system.

Presentation comes first, because flake and solution suit completely different intake, storage and dosing arrangements and carry different handling requirements. Then the duty — sulphidising, depression, precipitation or unhairing — together with the active content convention your process control uses and your site documentation requirements decide the material quoted. This reagent releases hydrogen sulphide gas on contact with acid and is handled strictly to its safety data sheet.

Sodium hydrogen sulphide, sodium bisulphide and NaHS are alternative names for this same material, not separate products. It is distinct from sodium sulphide, which is a different salt with different handling and stoichiometry, and from sodium hydrosulphite (sodium dithionite), a reducing agent whose similar-sounding name causes frequent purchasing errors. Flake and solution presentations and their active-content conventions are grade dimensions handled inside this record.

Suppliers report active content, solution strength, particle presentation and impurity limits in different conventions, and the numbers are not interchangeable between them. State the convention your specification uses along with the property window you actually need, and comparison is made like for like against producer data for the grade offered.

This page asserts no purity, assay, active content, concentration, moisture, pH, density, dosage rate, performance figure, approval, registration, certification, origin, packing, minimum quantity, availability, lead time or price. Every commercially meaningful value is taken from producer documentation for the exact grade offered and confirmed in writing before order.

Allzone sources this material through producer channels and quotes it per enquiry. Origin, production route and shipping point are selected against your technical requirement, quantity, documentation need and destination, and are stated in the offer rather than fixed by this page. Freight, discharge point and packaging format move landed cost, so quotations are compared delivered to your plant.

Technical data sheet, safety data sheet and certificate of analysis for the exact grade offered are requested from the producer and shared with the quotation. Handling, storage, incompatibility and personal-protection requirements are treated as SDS questions for the specific grade rather than figures published here. Where a declaration matters to your application — food contact, cosmetic, potable water, feed or regulatory — it is confirmed for that grade and intended use rather than assumed from this page.

Send the process it goes into, the function you need it to perform, the property window your specification calls for in your own convention, the annual and per-shipment quantity, the packaging format your intake can receive, the documentation required per shipment and the delivery province or port. Several materials can be listed in one enquiry and reviewed together rather than split into separate requests.