Typical specifications
- CAS 7757-83-7; confirm EINECS 231-821-4
- Assay stated 98%; request COA method
- Formula Na2SO3; check page typo Na2O3S
- Industrial grade; confirm food/pharma not implied
- Review sulfate, chloride, iron, insolubles
Needs spec and document verificationBack to sourcing hubWater Treatment
Sodium Sulfite 98% CAS 7757-83-7 Industrial Grade
Candidate listing for sodium sulfite CAS 7757-83-7, stated 98% industrial grade. Buyers should verify assay basis, impurities, actual packing, COA, SDS, and export documents 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 7757-83-7; confirm EINECS 231-821-4Inorganic salt / sodium sulfiteNeeds spec and document verification
Target buyers
- Water treatment chemical distributors
- Pulp and paper additive buyers
- Industrial chemical importers
- Textile auxiliary formulators
- Mining and flotation reagent buyers
Documents to check
- CAS number, grade, assay, and impurity profile
- SDS, COA, TDS, HS code, and transport classification
- Destination-market import documents before supplier matching
Packing notes
- Title states 25kg bags
- Page also lists 1kg bag, 25kg drum
- Confirm inner liner and moisture control
- Ask pallet, net weight, and label photos
- Check sample pack terms separately
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.
Common applications
- Oxygen scavenger applications
- Pulp bleaching support chemical
- Industrial water treatment formulations
- Dechlorination and reducing agent use
- General inorganic salt sourcing
Sourcing options
- Factory-direct RFQ with batch COA
- Sample order before bulk shipment
- OEM packing subject to confirmation
- FOB China or CIF quote comparison
- Third-party inspection before loading
Compliance notes
- Request SDS, COA, TDS, and export invoice data
- Confirm HS code and destination import rules
- Verify DG status with current SDS and carrier
- Ask for third-party test reports if needed
- No regulatory guarantee; buyer to verify locally
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.
sodium sulfite supplier Chinasodium sulfite 98%CAS 7757-83-7Na2SO3 industrial gradesodium sulphite 25kg bag
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Build a broader quote package from adjacent options.
Buyers often compare neighboring grades, forms, or route options before sending one consolidated RFQ.
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RFQ questions before supplier matching
Turn this product into a quote request.
Share target market, quantity, packaging scope, artwork status, delivery destination, and required documents so CHN Chemicals can prepare a cleaner supplier comparison.
- What is assay method and latest COA?
- What are sulfate, chloride, iron limits?
- Is 98% min guaranteed per batch?
- Which packing is standard for export?
- Can you provide SDS and label before PI?
- What MOQ, lead time, and Incoterms apply?
- Request SDS, COA, TDS, and export invoice data
- Confirm HS code and destination import rules
- Verify DG status with current SDS and carrier
- Ask for third-party test reports if needed
- No regulatory guarantee; buyer to verify locally
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.