Sodium Metasilicate Granules
Granular sodium metasilicate product information for buyers reviewing particle size, handling, detergent compatibility, packing, documents, and RFQ details.
Updated
Short answer
- Sodium metasilicate granules (Na₂SiO₃, CAS 6834-92-0) are the granular form of sodium metasilicate anhydrous.
- Specification (Q/ZZH 001-2026): Na₂O 50.0–51.5%, SiO₂ 45.0–48.0%, dry matter 95.0–98.5%, modulus 0.91–0.98, bulk density 1.05–1.35 g/cm³, particle size 250–1000 μm (60–18 mesh) ≥95.0% (granules: pass coarse sieve / retain fine sieve), whiteness ≥90.0.
- Iron is typical ≤100 ppm.
- Water-insoluble matter is typical ≤0.06%.
- Shelf life is 12 months from the date of manufacture when stored in the original, unopened packaging under the recommended storage conditions.
- Packing is a 25 kg PP woven bag with PE liner, or a 1,000 kg FIBC. Zhongzhi Chemical manufactures and exports it from China, with COA, SDS, TDS and EU REACH documentation for CAS 6834-92-0 available for buyer review.
- That file does not cover sodium metasilicate pentahydrate, CAS 10213-79-3.
Key Facts
- Chemical Identity
- Na₂SiO₃ · CAS 6834-92-0
- Na₂O
- 50.0–51.5%
- SiO₂
- 45.0–48.0%
- Particle Size
- 250–1000 μm (60–18 mesh) ≥95.0%
- Iron (Fe)
- Typical ≤100 ppm
- Packing
- 25 kg bags · 1,000 kg FIBC
- Documents
- COA · SDS · TDS · ISO · REACH (CAS 6834-92-0)
Product Overview
Sodium metasilicate granules are a free-flowing Na₂SiO₃ form used where easier handling, controlled dosing, lower dust, and stable storage are important in industrial formulations.
This form is commonly reviewed by detergent plants, cleaning compound producers, ceramic processors, metal treatment users, and distributors that need clear particle-size and packing confirmation before quotation.
Before ordering granular sodium metasilicate, buyers should confirm target mesh size, Na₂O, SiO₂, Fe, water insoluble matter, appearance, packing method, loading quantity, destination port, and required documents.
CAS 6834-92-0 · Na₂SiO₃
Key Specifications
Confirm final values against your target grade and order specification before quotation.
| Property | Value | Basis |
|---|---|---|
| Product Name | Sodium Metasilicate Anhydrous, granular | Identity |
| Chinese Name | 颗粒偏硅酸钠 | Identity |
| CAS No. | 6834-92-0 | Identity |
| Chemical Formula | Na₂SiO₃ | Identity |
| Product code | SMA | Identity |
| Inspection basis | Q/ZZH 001-2026 | Specification |
| Na₂O | 50.0–51.5% | Specification |
| SiO₂ | 45.0–48.0% | Specification |
| Dry matter | 95.0–98.5% | Specification |
| Modulus (SiO₂/Na₂O molar ratio) | 0.91–0.98 | Specification |
| Bulk density | 1.05–1.35 g/cm³ | Specification |
| Particle size | 250–1000 μm (60–18 mesh) ≥95.0%. Granules: pass coarse sieve / retain fine sieve. | Specification |
| Whiteness | ≥90.0 | Specification |
| Iron (Fe) | ≤100 ppm | Typical |
| Water insoluble | ≤0.06% | Typical |
| pH (1.0% w/w aqueous solution, 25°C) | 12–13 | Typical |
| Appearance | White granules | Typical |
| Packing | 25 kg PP woven bag with PE liner; 1,000 kg FIBC / jumbo bag | Handling |
| Loading without pallets | 25 kg — 27 mt / 20 FCL | Handling |
| Loading on pallets | 25 kg — 24 mt / 20 FCL; 1,000 kg — 20 mt / 20 FCL | Handling |
| Shelf life | 12 months from the date of manufacture when stored in the original, unopened packaging under the recommended storage conditions. | Handling |
| Storage | Keep tightly closed in a cool, dry, ventilated warehouse; protect from moisture and keep away from acids. | Handling |
| Documents Available | TDS, MSDS/SDS and ISO certificates are downloadable. EU REACH documentation on request is for CAS 6834-92-0 only and does not cover sodium metasilicate pentahydrate, CAS 10213-79-3. The shipment COA reports the specification rows. | Documents |
Applications
- Laundry powder and dishwashing detergent builder systems
- Industrial cleaning compound formulations requiring easier dosing
- Ceramic and refractory processing where alkaline silicate support is needed
- Metal surface cleaning and degreasing preparations
- Distributor repacking or stock supply where granular handling is preferred
Packaging Options
Select packing according to handling method, container loading plan, and storage conditions.
- 25 kg PP woven bag with PE liner
- 1,000 kg FIBC / jumbo bag
- Loading without pallets: 25 kg — 27 mt / 20 FCL
- Loading on pallets: 25 kg — 24 mt / 20 FCL; 1,000 kg — 20 mt / 20 FCL
Grade Features
- Granular form supports cleaner handling, easier dosing and reduced dust compared with fine powder
- Particle size 250–1000 μm (60–18 mesh) ≥95.0%. Granules: pass coarse sieve / retain fine sieve.
- Whiteness ≥90.0 is a specification. Iron ≤100 ppm and water-insoluble matter ≤0.06% are typical values, not specifications.
- Shelf life is 12 months from the date of manufacture when stored in the original, unopened packaging under the recommended storage conditions.
- MSDS / SDS and the approved TDS are on Downloads. The shipment COA reports the specification rows.
Frequently Asked Questions
Why choose granular sodium metasilicate over powder?
The chemistry is the same anhydrous grade (Na₂SiO₃, SiO₂ 45.0–48.0%, Na₂O 50.0–51.5%). The granular form is specified at particle size 250–1000 μm (60–18 mesh) ≥95.0%. The powder form is specified as passing 425 μm (40 mesh) ≥90.0% and passing 250 μm (60 mesh) ≥90.0%.
What particle size are the granules?
250–1000 μm (60–18 mesh) ≥95.0%. Granules: pass coarse sieve / retain fine sieve. Test sieves: ISO 3310-1:2016.
What iron and water-insoluble levels do the granules meet?
Both are typical values, for information only, not specifications. Iron (Fe) is typical ≤100 ppm. Water-insoluble matter is typical ≤0.06%. Whiteness ≥90.0 is a specification. Only specification rows are guaranteed and reported on the COA.
How are the granules packed and what is the shelf life?
Packing is a 25 kg PP woven bag with PE liner, or a 1,000 kg FIBC / jumbo bag. Shelf life is 12 months from the date of manufacture when stored in the original, unopened packaging under the recommended storage conditions. Minimum order quantity is confirmed on the RFQ.
Product documents for buyer review
Download available MSDS, certificates, product brochure and company documents, or request batch-specific COA / TDS / SDS for your order.
RFQ information needed
- Grade (optional)
- Order quantity or annual demand
- Packing preference
- Destination port or country
- Application or formulation use
- Required documents: COA, TDS, SDS or certificates
Ready to RFQ
A quotation is easier to price with application, monthly quantity (MT), packing, destination port and buyer type. Grade is optional. The form can be sent with an email or a WhatsApp number. 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