Sodium Metasilicate for the Paper Industry
Paper and pulp operations use sodium metasilicate as an alkaline processing aid in deinking, pulping auxiliaries, and equipment cleaning formulations within the mill chemical program.
Updated
Short answer
Paper and pulp mills use sodium metasilicate as an alkaline processing aid in deinking, pulping auxiliaries and equipment cleaning within the mill chemical program, where it stabilises peroxide bleaching and helps keep detached ink dispersed. Silicate binds transition metals such as iron, copper and manganese, reducing unproductive hydrogen peroxide decomposition. Pentahydrate Fe is typical ≤80 ppm. Anhydrous Fe is typical ≤100 ppm. There is no single default grade: selection follows the process stage and the make-up method, so send the stage and your specification for review rather than ordering against the application name. Zhongzhi Chemical supplies anhydrous (including granular), pentahydrate and instant sodium silicate powder from China with SDS and COA for buyer review. EU REACH status and importer coverage must be confirmed separately against the requested substance identity, supply chain, annual tonnage and importer legal entity. Please request a compliance review before quotation.
Identity & supply
Zhongzhi Chemical sodium metasilicate. Grade is optional on the RFQ.
- Anhydrous CAS
- 6834-92-0
- Pentahydrate CAS
- 10213-79-3
- Transport (typical SDS)
- UN3253, Class 8, PG III — verify current SDS
- HS
- 2839.11 (CN 28391100 series)
- Packing
- 25 kg PP woven bags with PE liner; 1,000 kg FIBC
- MOQ / lead time
- Confirmed on RFQ against destination and grade
How Sodium Metasilicate Is Used
- Deinking and pulping auxiliary chemicals
- Alkaline cleaning of paper machine equipment
- pH control in selected process stages
- Component in multi-chemical mill treatment packages
Benefits for This Industry
- Specification review for recurring paper and pulp chemical orders
- Packing and loading details confirmed according to order requirement
- Export packaging suitable for long-distance shipment
- Combined orders with detergent-grade metasilicate for distributors
How Our Sodium Metasilicate Supports This Application
| Formulation need | Product feature | Value to your line |
|---|---|---|
| Stabilise peroxide bleaching | Alkaline silicate buffering | Steadies pH so peroxide bleaching stays controlled |
| Keep detached ink dispersed in deinking | Silicate dispersing and deflocculation action | Helps prevent ink redeposition during deinking |
| Alkaline cleaning of machine equipment | Strong alkalinity | Effective cleaning of paper-machine equipment |
| Grade matched to the process stage | Anhydrous (including granular), pentahydrate and instant sodium silicate powder | Grade follows the stage and make-up method, not the application name |
| Recurring long-distance mill supply | Export packing with batch COA | Reliable shipment and documentation for repeat orders |
Scope and limits
Performance in your formulation is established by your own trial. These are the limits we hold to.
- There is no single default grade. Selection follows the process stage and the make-up method.
- Send the mill stage and your specification for review rather than ordering against the application name.
- EU REACH status and importer coverage must be confirmed separately against the requested substance identity, supply chain, annual tonnage and importer legal entity.
Grade selection depends on your mill process. Submit your specification requirements for quotation review.
Confirm application, monthly quantity, packing, destination port and buyer type on the RFQ form.
Ready to RFQ for pulp and paper
Application is pre-set to Pulp & paper. Add the mill stage, grade, monthly quantity, packing and destination port.
- Grade
- Monthly quantity (MT)
- Packing
- Destination port
- Documents needed
South Asia paper example
An example buyer scenario for a South Asia mill chemical program. It reviews sodium metasilicate pentahydrate or granules as an alkaline processing aid. No mill name or volume is included.
Which sodium metasilicate grade does a paper mill use?
A paper mill selects the grade from the process stage and the make-up method. Pentahydrate is the form for wet make-up in deinking, peroxide bleaching and pulping auxiliaries. Anhydrous, including the granular form, is the form when charging is dry or handling-constrained, including alkaline cleaning of paper-machine equipment.
Send the mill stage, the make-up method, monthly quantity, packing and destination port on the RFQ. Zhongzhi Chemical supplies sodium metasilicate anhydrous, sodium metasilicate pentahydrate, and instant sodium silicate powder.
FAQ
What is the MOQ for paper industry buyers?
Minimum order is 1 MT, and below one full container the sale is EXW, collected from the plant by your forwarder. Volume contracts available for recurring supply.