Sodium Metasilicate CAS Numbers and Chemical Identity
Which CAS number applies to anhydrous and pentahydrate sodium metasilicate, how each differs from sodium silicate (CAS 1344-09-8), and how to close a mismatch.
Read reference →Technical References
The specification questions buyers settle before grade selection and before price. Each reference answers one question directly, then shows the data with its basis stated — published specification, batch COA, or confirmed on request.
Specification and Identity
Written for incoming inspection, second-source qualification and specification review — not for grade promotion.
Every value states its basis: a published specification is a committed limit, a batch COA is a measurement of one shipment, and an on-request figure is confirmed against the grade before order.
Sodium Metasilicate Na₂O and SiO₂ Content — Comparing Grades
Published Na₂O and SiO₂ minimums for anhydrous, granular and pentahydrate sodium metasilicate, why hydrate assays look lower, and how to normalize them before comparing quotations.
Read reference →Iron and Water-Insoluble Limits in Sodium Metasilicate
Iron and water-insoluble limits by grade tier — Superior Fe ≤ 0.008–0.010%, Standard ≤ 0.015–0.020% — why each matters for white formulations, and how to verify them.
Read reference →Quality Control and Batch-to-Batch Consistency
What is tested at each production stage, what the batch COA reports, and how a buyer qualifies consistency across consecutive shipments rather than one sample.
Read reference →Batch Traceability from Raw Material Lot to Finished Bag
What a batch number identifies, how far back a finished bag traces, what is marked on the packaging, and what to send us when a shipment has to be investigated.
Read reference →Change Control and Notification
What happens when a specification, process or packing detail changes: we notify you immediately rather than letting you find it at goods-in, and the batch record stays traceable.
Read reference →Ready to RFQ
A quotation needs grade and monthly quantity (MT), plus packing, destination port and buyer type. The form will not submit without these. Approved TDS, SDS and stamped COA samples are on Downloads; a shipment COA is issued per order. No prices are shown on the form.
- Grade
- Monthly quantity (MT)
- Packing
- Destination port
- Documents needed