Copper sulfate pentahydrate candidate for buyers sourcing mining, industrial, agricultural, or laboratory reagent grades. The source listing indicates CAS 10257-54-2, formula CuSO4.5H2O, blue crystal appearance, 98% minimum content, 25 kg bag packing, China origin, and HS code 2833250000. Buyers should verify CAS alignment, hydrate form, assay basis, impurity profile, grade suitability, SDS/COA availability, and export documentation before RFQ confirmation.
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.: 10257-54-2 as listed; buyers should confirm whether this matches the required copper sulfate pentahydrate registry entry in the destination marketCopper sulfate pentahydrate / mining reagent / industrial chemical reagentCandidate for RFQ after CAS, grade, COA, impurity, packing, and DG/export checks
CAS No.: 10257-54-2 as listed; buyers should confirm whether this matches the required copper sulfate pentahydrate registry entry in the destination market
Formula: CuSO4.5H2O as listed
Appearance: blue crystal / crystalline powder
Assay: CuSO4.5H2O >= 98% as listed
Grade references: GR, technical grade, analytical reagent, industry reagent, and flotation-related use are mentioned; exact grade should be confirmed by COA
Application references: mineral flotation, industry, scientific research, environmental protection, agriculture
Agricultural or trace-element formulation sourcing subject to local registration and impurity limits
Laboratory reagent supply where grade, COA, and packaging integrity must be verified
Distributor stock purchase requiring export-ready documents and consistent 25 kg bag packing
How we compare
Sourcing options
Request mining/flotation grade copper sulfate pentahydrate with agreed assay and impurity limits
Request industrial grade 98% minimum copper sulfate pentahydrate in 25 kg bags
Request agricultural grade only if local registration and contaminant specifications are supported
Request reagent grade only with batch COA, test method references, and grade-specific impurity limits
Compare FOB China port, CIF destination port, and CFR options based on DG/export handling and freight availability
Human review
Compliance notes
Request current SDS, COA, TDS/specification sheet, packing list template, and certificate of origin before order placement
Confirm dangerous goods classification, UN number if applicable, marine pollutant status, and transport mode requirements with the supplier and freight forwarder
Verify heavy metals and insoluble matter limits against the intended market and use case
Confirm REACH, RoHS, food/feed/agriculture, or mining-sector documentation only where relevant to the buyer's market; supplier statements should be checked against local importer obligations
Do not rely on marketplace labels such as high purity, GR, or technical grade without batch-level COA and agreed specification limits
Check destination-country import controls, chemical inventory status, and required registrations before shipment
Buyer search paths
Related sourcing terms
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Questions to confirm
Can you provide a recent COA showing assay basis, copper content, insoluble matter, chloride, iron, lead, arsenic, cadmium, moisture, and pH where tested?
Is the product supplied strictly as copper sulfate pentahydrate, and can the hydrate form be confirmed on the specification sheet?
Which grade is actually available for export: mining/flotation grade, industrial grade, agricultural grade, analytical reagent, or GR?
What is the standard MOQ, lead time, monthly export capacity, and available shipment terms for FOB, CIF, CFR, and EXW?
Can you provide SDS in English, product labels, DG declaration if required, and shipping documentation before booking?
What packing options are available beyond 25 kg bags, and are pallets fumigated or compliant for the destination country?
Are third-party inspections such as SGS, BV, or CIQ pre-shipment testing accepted?
Can impurity limits be customized for mining reagent use or agricultural use, and what price impact applies?
Checks before quote
Request current SDS, COA, TDS/specification sheet, packing list template, and certificate of origin before order placement
Confirm dangerous goods classification, UN number if applicable, marine pollutant status, and transport mode requirements with the supplier and freight forwarder
Verify heavy metals and insoluble matter limits against the intended market and use case
Confirm REACH, RoHS, food/feed/agriculture, or mining-sector documentation only where relevant to the buyer's market; supplier statements should be checked against local importer obligations
Do not rely on marketplace labels such as high purity, GR, or technical grade without batch-level COA and agreed specification limits
Check destination-country import controls, chemical inventory status, and required registrations before shipment
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.
