Sodium Phosphate Dibasic Anhydrous (DSP CAS 7558-79-4) is a versatile compound widely used in various industries, from pharmaceuticals to water treatment. Its multifunctional properties and ease of use make it a staple in both research labs and manufacturing facilities. In this guide, we’ll explore what DSP is, its main uses, properties Disodium Hydrogen Phosphate Dodecahydrate DSP CAS 10039-32-4, safety considerations, and why it’s so valued in professional settings. Whether you’re a chemist, industry professional, or just curious, this guide will give you all the essential information.
What Is Sodium Phosphate Dibasic Anhydrous?
Sodium Phosphate Dibasic Anhydrous, also known by its CAS number 7558-79-4, is a white, crystalline, odorless powder. It is one of the three main sodium phosphate salts, made from phosphoric acid and sodium carbonate.
Key Properties:
- Chemical Formula: Na₂HPO₄
- Molecular Weight: 141.96 g/mol
- Solubility: Highly soluble in water
- pH in solution: Slightly basic (around pH 8.5 – 9.5)
- Appearance: White powder or granular crystals
- Hygroscopic: Absorbs moisture from the air
Because it is anhydrous (without water molecules), DSP CAS 7558-79-4 offers high purity and predictable performance in formulations.
Common Uses of Sodium Phosphate Dibasic Anhydrous
1. Pharmaceutical Industry
DSP is commonly used as:
- A laxative in enemas and oral solutions
- A pH buffer in drug formulations
- A nutrient source in certain medical supplements
Its biocompatibility and buffering ability make it ideal for regulated healthcare products.
2. Food Industry
In food processing, DSP CAS 7558-79-4 acts as:
- A leavening agent in baking powders
- A stabilizer in dairy products
- A texturizer and emulsifier in processed cheese
It’s considered safe by the FDA when used in approved concentrations.
3. Water Treatment
Sodium Phosphate Dibasic Anhydrous is added to:
- Prevent corrosion in boiler systems
- Control scale buildup
- Adjust pH in municipal water supplies
4. Laboratory and Research Use
- As a buffering agent in biological and chemical experiments
- To prepare phosphate-buffered saline (PBS) solutions
- In molecular biology protocols
5. Industrial Applications
DSP CAS 7558-79-4 is used in:
- Textile manufacturing as a detergent builder
- Metal cleaning and surface treatment
- Ceramics for its fluxing properties
Benefits of Using DSP CAS 7558-79-4
Here’s why professionals trust Sodium Phosphate Dibasic Anhydrous:
- ✅ High solubility makes it easy to use in solutions
- ✅ Stable and long shelf-life
- ✅ Safe when handled properly
- ✅ Multipurpose across food, pharma, industrial, and research settings
- ✅ Cost-effective and readily available
Safety and Handling
While generally safe in controlled use, proper handling is essential:
⚠️ Safety Tips:
- Use gloves and goggles when handling large quantities
- Avoid inhalation or contact with eyes
- Store in a cool, dry place to prevent moisture absorption
- Follow MSDS guidelines (Material Safety Data Sheet)
In case of skin contact: Rinse with water.
In case of inhalation: Move to fresh air and seek medical attention if symptoms persist.
How to Store and Transport Sodium Phosphate Dibasic Anhydrous
- Packaging: Typically in 25 kg bags or drums
- Storage: Keep sealed, away from heat and humidity
- Transport: Non-hazardous under standard regulations (UN classification not required)
Make sure it’s clearly labeled and not stored with incompatible substances like strong acids.
Comparison with Other Sodium Phosphates
| Property | Monobasic (NaH₂PO₄) | Dibasic (Na₂HPO₄) | Tribasic (Na₃PO₄) |
|---|---|---|---|
| pH in solution | Acidic | Slightly Basic | Strongly Basic |
| Common use | Buffers, food additive | Buffers, industrial | Cleaners, detergents |
| Solubility | High | High | Moderate |
DSP strikes the perfect balance for applications requiring neutral to slightly basic conditions.
Where to Buy Sodium Phosphate Dibasic Anhydrous
Looking for reliable sources of Sodium Phosphate Dibasic Anhydrous DSP CAS 7558-79-4? It’s widely available through:
- Chemical supply companies
- Pharma-grade raw material distributors
- Online B2B marketplaces like Alibaba, Sigma-Aldrich, Thermo Fisher
Be sure to verify purity, grade, and certification before purchasing.
Final Thoughts
Sodium Phosphate Dibasic Anhydrous DSP CAS 7558-79-4 is a critical compound that serves countless purposes in modern industry, food processing, medical formulations, and research labs. Its reliability, safety profile, and multi-functional nature make it a go-to solution across sectors.
✅ In Summary:
- It acts as a buffer, stabilizer, pH adjuster, and cleaning agent.
- Safe for use when handled properly
- Available in both pharma and industrial grades
Want to learn more or need help sourcing high-quality DSP CAS 7558-79-4?
Get in touch with a trusted supplier or chemical consultant today to ensure you get the right grade for your application.