Identity lock
Write chemical name, CAS where known, physical form and whether the brief is MOP, SOP or KOH. Ask the supplier to repeat that identity on SDS, TDS and CoA headers.
Document ledger
Potash suppliers document questions before the RFQ is sent
This guide converts specification, SDS, TDS and CoA questions into a buyer ledger. It does not certify potash suppliers, transfer ISO or TSCA status, or replace laboratory review of the exact quoted article.
- SDS revision
- TDS method
- CoA columns
- TSCA question
Ledger rows that belong on a potash suppliers brief
Copy these rows into the RFQ so plants answer the same file set. A document issued for another mine, evaporator or KOH concentration is recorded as unmatched, not as proof.
Assay lock
State requested K2O, KOH assay, moisture and particle size. Ask which analytical method will appear on the CoA and whether a typical or lot CoA will be issued.
Packaging lock
Record 25 kg or 50 kg bags, jumbo bags, drums, IBCs or bulk, liner type and pallet notes. Ask that net content on the quote matches the document pack.
Regulatory questions
Ask the named supplier for TSCA status on US supply, REACH statements where relevant, and DOT or IMDG class from the exact SDS. These are questions, not desk certificates.
Sample requests should name the criterion being checked: identity, appearance, assay, moisture, particle profile, packaging integrity or another buyer-approved test. Pass or fail is recorded by the buyer’s reviewer, not by this website. Handling, storage and neutralization remain with qualified parties using the exact SDS.
File mismatches that keep a quote incomplete
SDS for a different concentration
A 90 percent KOH flake SDS does not evidence a 45 percent liquor. Transport class, pH and corrosive statements must follow the quoted concentration.
TDS without method names
K2O or moisture ranges without method and temperature stay open. Marketing ranges are not treated as CoA commitments.
CoA from a related lot
A certificate for another granule size, mine or evaporator does not close the lot. Ask whether the CoA will be lot-specific after production.
Borrowed ISO or GMP badges
Quality-system evidence belongs to the proposed supplier. This sourcing desk does not display plant certificates as its own credentials.
Attach the document ledger to your RFQ
Send identity, assay, pack and the SDS, TDS and CoA questions still open. We then request factory quotes from potash suppliers on that written file set.