CAS 7727-73-3 | Sodium Sulfate Decahydrate | Glauber's Salt for Industrial & Thermal Storage | China Manufacturer
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🧪 Assay
≥ 98%
High purity
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🧊 Appearance
White Solid
Crystalline powder
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🌡️ Melting Point
32 – 38 °C
PCM material
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⚖️ Molecular Weight
322.19
H₂₀Na₂O₁₄S
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Product Overview
As a China-based direct supplier, Alfa Group offers high-purity Sodium Sulfate Decahydrate (CAS 7727-73-3), also known as Glauber's Salt. This industrial chemical is widely used in the manufacture of water glass, glass, enamel, pulp, detergents, and as a thermal energy storage material. With a minimum assay of 98% and consistent physical properties, our product serves diverse industrial and R&D applications.
Sodium sulfate decahydrate is a phase change material with a melting point of 32-38°C, making it suitable for thermal storage systems. It is also used as a desiccant, dye diluent, and in refrigerant mixtures. We provide flexible packaging from 1kg R&D samples to 20kg industrial drums with fast worldwide delivery. For similar industrial chemicals, explore our related product range.
Key Features
Minimum assay of 98% ensures consistent performance in industrial formulations and thermal storage applications.
Melting point range of 32-38°C makes it an effective phase change material (PCM) for low-temperature thermal storage systems.
Used in glass manufacturing, detergents, pulp production, dye dilution, and as a desiccant and refrigerant mixture component.
Available in 1kg, 2kg, and 20kg packaging. Reliable supply chain with 3-7 day delivery worldwide.
Applications
A key raw material in the production of glass, water glass (sodium silicate), and enamel. Provides consistent quality for industrial glass formulations.
Request technical data →Used as a filler and processing aid in powdered detergents and as a cooking chemical in sulfate pulp manufacturing.
Get formulation advice →As a phase change material (PCM), it stores and releases thermal energy at 32-38°C. Ideal for low-temperature heating and cooling applications.
Request a sample →Acts as a diluent for dyes, a desiccant in drying processes, and a component in refrigerant mixtures and cooling baths.
Request a quote →Product Specifications
| Parameter | Specification |
|---|---|
| Product Name | Sodium Sulfate Decahydrate |
| Synonym | Glauber's Salt, Sodium Sulfate Hydrate |
| CAS Number | 7727-73-3 |
| EINECS Number | 231-820-9 |
| Molecular Formula | H₂₀Na₂O₁₄S |
| Molecular Weight | 322.19 g/mol |
| Assay (Purity) | ≥ 98% |
| Appearance | White crystalline solid |
| Melting Point | 32 – 38 °C |
| Density | 1.46 g/mL at 25°C |
| pH (5% solution) | 5.0 – 8.0 |
| Loss on Drying | ≤ 2.0% |
| Insoluble Matter | ≤ 0.05% |
| Chloride (Cl) | ≤ 0.05% |
| Heavy Metals (Pb) | ≤ 0.001% |
| Storage Condition | Cool, dry, sealed container |
| Shelf Life | 24 months |
| Packaging Options | 1kg / 2kg / 20kg, custom available |
Every shipment includes COA and SDS. Click below to request batch-specific documents or technical data:
Manufacturing & Quality Control
Alfa Group operates dedicated production facilities for industrial inorganic salts. Our sodium sulfate decahydrate is manufactured under documented SOPs and validated to ensure high purity (≥98%), consistent melting point, and reliable physical appearance across all batches.
Each shipment is accompanied by a Certificate of Analysis (COA) and Safety Data Sheet (SDS), showing assay, melting point, density, and other quality parameters. Learn more about our facilities →
Packaging & Shipping
- Packaging Options: 1kg / 2kg / 20kg drums, custom packaging on request
- Shipping Methods: International express courier for sample quantities; air freight or sea freight for bulk orders
- Delivery Time: 3-7 business days after payment confirmation
- Documentation: COA and SDS provided with every shipment
For special packaging or urgent requests, please contact our team directly.
Why Choose Alfa Group
- 10+ years focused on industrial chemicals and inorganic salts
- Experienced R&D and QC team with expertise in salt purification and crystallization
- In-house QC – assay, melting point, and purity verified, batch-traceable COA
- Flexible supply – 1kg for R&D up to ton-scale for production
- China supplier direct – competitive pricing with full COA/SDS traceability
Explore more industrial chemical products or contact us for custom requirements.
Frequently Asked Questions
It is used in glass and detergent manufacturing, as a thermal energy storage material (phase change material), as a desiccant, and in dye dilution and refrigerant mixtures.
Our Sodium Sulfate Decahydrate has a minimum assay of 98%, verified by in-house QC. COA provided with every shipment.
Standard packaging includes 1kg, 2kg, and 20kg drums. Custom packaging is available upon request.
Yes, COA and SDS are provided with every shipment. Batch-specific documents are available upon request.
Store in a cool, dry, well-ventilated area in sealed containers. Avoid moisture and direct sunlight. Shelf life is 24 months under proper storage.
Standard MOQ is 1kg for R&D samples and 20kg for production quantities. Contact us for larger bulk orders.
Related products & resources:
* All product specifications are for reference purposes. Users should conduct their own suitability tests under actual conditions. Products are for industrial manufacturing and R&D use only. Not for food, pharmaceutical, or cosmetic applications without specific regulatory compliance testing.
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