Sodium metasilicate pentahydrate
Sodium metasilicate pentahydrate (CAS: 10213-79-3; Formula: Na2SiO3 · 5H2O; MW: 212.14) is an inorganic salt that readily dissolves in water to form an alkaline solution. It is a versatile compound utilised across various industrial applications, notably as a builder in detergents, an adhesive in corrugated cardboard manufacturing, and a binder in refractory materials. Its properties make it valuable in cleaning formulations and metal treatment processes.
Detergent Builder
Sodium metasilicate pentahydrate acts as an effective builder in detergent formulations, enhancing cleaning performance by softening water and dispersing dirt. Its alkaline nature helps in saponifying fats and oils, contributing to effective stain removal.
Adhesives and Binders
It serves as a key component in adhesives, particularly for corrugated fibreboard manufacturing due to its fast-setting properties. It also functions as a binder in refractory cements and investment casting moulds.
Metal Surface Treatment
This compound is used in metal cleaning and treatment processes to remove grease and oils. Its alkaline pH helps in passivating metal surfaces, providing temporary corrosion resistance.
Textile and Paper Processing
In the textile industry, it is used as a stabiliser in peroxide bleaching baths. In papermaking, it aids in de-inking recycled paper and can be used as a sizing agent.
| Molecular weight | 212.14 |
|---|---|
| Linear formula | Na2SiO3 · 5H2O |
| Assay | ≥97% |
Hazard statements
- H314Causes severe skin burns and eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3253 8 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34-37 |
| Safety statements (S) | 26-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Sodium metasilicate pentahydrate used for?
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Sodium metasilicate pentahydrate is used as a builder in detergents, an adhesive in corrugated cardboard, a binder in refractory materials, in metal surface treatment, and in textile and paper processing.
What is the CAS number and formula for Sodium metasilicate pentahydrate?
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The CAS number is 10213-79-3 and the molecular formula is Na2SiO3 · 5H2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Sodium metasilicate pentahydrate with an assay of ≥97%. This product is not classified as USP, BP, or EP grade.
What are the safety concerns when handling Sodium metasilicate pentahydrate?
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Sodium metasilicate pentahydrate is corrosive and may cause severe skin burns and eye damage (H314). It can also cause respiratory irritation (H335). Appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection, must be used. Handle only in well-ventilated areas.
How is Sodium metasilicate pentahydrate packaged and shipped?
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This chemical is shipped under UN 3253, Hazard Class 8, Packing Group III. Packaging is designed to meet international shipping regulations for hazardous materials.
How can I request a quote or sample for Sodium metasilicate pentahydrate?
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To request a quote or sample, please contact our sales team through the website or call us directly. Provide the product name and CAS number for prompt service.
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