Sodium Hydrosulfite CAS 7775-14-6 Industrial Grade Export Supply
Industrial-grade sodium hydrosulfite candidate for overseas buyers requiring CAS confirmation, reducing-agent performance checks, export documentation, and DG-aware packing review. Supplier page lists CAS 7775-14-6, formula Na2O4S2, purity ≥99%, light yellow crystal or powder appearance, and 25 kg/50 kg bag or paper drum packing, but the listing contains several specification inconsistencies that should be clarified before RFQ or sampling.
Quick buying facts
Identify the grade, package, and import market before comparing suppliers.
Use this page to check the product identity, common specification points, document scope, package notes, and destination-market questions before sending a China sourcing request.
CAS No.: 7775-14-6 listed; buyer should confirm sodium hydrosulfite/sodium dithionite identity against COA and SDSInorganic reducing agent / sodium hydrosulfite / sodium dithionite candidateHuman review
Confirm whether packing is DG-compliant for destination routing and carrier acceptance
Ask whether inner liner, sealed bag specification, and batch labeling can match buyer import requirements
Clarify sample packing and whether the quoted sample is from commercial-grade stock
Applications and sourcing options
Check whether this product fits the buyer's actual application.
Clear application, grade, package, and document notes help separate real sourcing demand from a vague price check.
Use context
Common applications
Vat dye dyeing supply qualification
Disperse dye reduction clearing chemical sourcing
Dye vat cleaning and reductive stripping procurement
Indigo dyeing auxiliary sourcing
Industrial reducing-agent distribution where CAS, assay, and DG transport are pre-checked
How we compare
Sourcing options
Request a document-first RFQ with SDS, COA, TDS, packing specification, and DG declaration before price comparison
Start with a small trial batch or retained sample only after identity and transport classification are confirmed
Compare against alternate sodium hydrosulfite suppliers using assay, impurity limits, shelf life, packing integrity, and export route acceptance
Use third-party inspection for batch sampling, label check, and container loading verification on larger orders
Human review
Compliance notes
Treat as a compliance-sensitive chemical sourcing item requiring SDS, COA, TDS/spec sheet, commercial invoice, packing list, and transport classification review before purchase
Confirm UN number, hazard class, packing group if applicable, and marine/air/road transport restrictions with current SDS and freight forwarder
Supplier listing includes ISO certification claim; request certificate scope and validity if required for vendor approval
Do not rely on marketplace labels or profile badges as regulatory evidence; verify company license, export qualification, and batch documents directly
Check destination-country import controls, industrial-use restrictions, and buyer end-use declarations before placing order
No regulatory guarantee is implied; final classification and admissibility should be confirmed by buyer, importer, and logistics provider
Buyer search paths
Related sourcing terms
These terms support long-tail discovery while keeping the page focused on useful product and China export buying context.
Share target market, quantity, packaging scope, artwork status, delivery destination, and required documents so CHN Chemicals can prepare a cleaner supplier comparison.
Questions to confirm
Can you provide current SDS, COA, TDS/specification sheet, and transport classification for CAS 7775-14-6?
Is the product sodium hydrosulfite/sodium dithionite, or a replacement/reducing-agent blend? Please confirm exact composition and assay basis.
What is the guaranteed assay, sodium carbonate/sulfite/thiosulfate or other impurity profile, moisture limit, and insoluble matter limit?
Why does the listing show both sodium hydrosulfite and sodium sulfate/type sulfate references? Please confirm correct product name and HS code.
What shelf life will appear on the export COA and label for the shipped batch?
What packing options are available for export, and are they accepted for DG shipment on the proposed route?
Can you provide recent batch COA, packing photos, pallet details, and container loading plan for 10 MT or trial order?
What is the MOQ, lead time, Incoterms, loading port, and price validity for export orders?
Checks before quote
Treat as a compliance-sensitive chemical sourcing item requiring SDS, COA, TDS/spec sheet, commercial invoice, packing list, and transport classification review before purchase
Confirm UN number, hazard class, packing group if applicable, and marine/air/road transport restrictions with current SDS and freight forwarder
Supplier listing includes ISO certification claim; request certificate scope and validity if required for vendor approval
Do not rely on marketplace labels or profile badges as regulatory evidence; verify company license, export qualification, and batch documents directly
Check destination-country import controls, industrial-use restrictions, and buyer end-use declarations before placing order
No regulatory guarantee is implied; final classification and admissibility should be confirmed by buyer, importer, and logistics provider
Next step
Send the product page with your target quantity and market. A sourcing manager can then confirm sample options, supplier fit, packaging details, and open document gaps.
