1,5-Naphthalenedisulfonic acid sodium salt
1,5-Naphthalenedisulfonic Acid Sodium Salt: High-Quality Industrial Chemical
1,5-Naphthalenedisulfonic acid sodium salt is a versatile organic compound widely used in dye manufacturing, pharmaceuticals, and chemical synthesis. With excellent water solubility and stability, this high-purity chemical delivers consistent performance in various industrial applications.
Product Specifications
- Chemical Name: 1,5-Naphthalenedisulfonic acid sodium salt
- CAS Number: 1655-29-4
- Molecular Formula: C10H6Na2O6S2
- Molecular Weight: 332.24 g/mol
- Appearance: White to off-white crystalline powder
- Solubility: Highly soluble in water (≥500 g/L at 20°C)
- Purity: ≥98% (HPLC)
- Storage Conditions: Store in a cool, dry place at 15-30°C
- Shelf Life: 36 months when properly stored
Technical Parameters
| Parameter | Specification | Test Method |
|---|---|---|
| Melting Point | >300°C | DSC |
| pH (1% solution) | 7.0-9.0 | pH meter |
| Loss on Drying | ≤1.0% | Gravimetric |
| Heavy Metals (as Pb) | ≤10 ppm | ICP-OES |
| Sulfate Content | ≤0.1% | Ion Chromatography |
| Chloride Content | ≤0.05% | Ion Chromatography |
Applications
1,5-Naphthalenedisulfonic acid sodium salt serves as a key intermediate in various industries:
- Dye Manufacturing: Essential component for producing acid dyes and reactive dyes
- Pharmaceuticals: Intermediate for certain drug formulations
- Electroplating: Used in electroplating solutions
- Chemical Synthesis: Versatile building block for organic synthesis
- Textile Industry: Used in dyeing processes for synthetic fibers
Handling and Safety
1,5-Naphthalenedisulfonic acid sodium salt is classified as non-hazardous under normal handling conditions. However, standard laboratory precautions should be observed:
- Avoid inhalation of dust
- Wear protective gloves and eye protection
- Use in well-ventilated areas
- Store away from strong oxidizing agents
FAQ
Q: What is the optimal storage condition for 1,5-Naphthalenedisulfonic acid sodium salt?
A: For long-term stability, store 1,5-Naphthalenedisulfonic acid sodium salt in a tightly sealed container in a cool, dry place (15-30°C). Avoid exposure to moisture and direct sunlight. The compound is stable under these conditions for up to 36 months.
Q: How should I prepare a standard solution of 1,5-Naphthalenedisulfonic acid sodium salt?
A: To prepare a standard solution, weigh the required amount of 1,5-Naphthalenedisulfonic acid sodium salt and dissolve it in deionized water at room temperature with gentle stirring. For a 1M solution, dissolve 332.24 g in 1 liter of water. The compound dissolves readily, typically within 5-10 minutes with moderate stirring.
Q: What analytical methods are suitable for quality control of 1,5-Naphthalenedisulfonic acid sodium salt?
A: Several methods can be used for analyzing 1,5-Naphthalenedisulfonic acid sodium salt: HPLC for purity determination, UV-Vis spectroscopy for quantitative analysis (λmax ≈ 260 nm), titration methods for sulfonic acid group determination, and ICP-OES for trace metal analysis. The specific method depends on your quality control requirements.
Q: Can 1,5-Naphthalenedisulfonic acid sodium salt be used in food applications?
A: No, 1,5-Naphthalenedisulfonic acid sodium salt is not approved for food applications. It is strictly for industrial use in dye manufacturing, chemical synthesis, and related applications. The compound has not been evaluated for food safety and should not be used in products intended for human or animal consumption.
Q: What is the difference between 1,5-Naphthalenedisulfonic acid and its sodium salt?
A: The acid form (1,5-Naphthalenedisulfonic acid) is more acidic and less soluble in water compared to the sodium salt. The sodium salt form (1,5-Naphthalenedisulfonic acid sodium salt) offers better solubility in aqueous systems, improved stability, and easier handling. For most industrial applications, the sodium salt form is preferred due to these practical advantages.
Packaging Options
We offer 1,5-Naphthalenedisulfonic acid sodium salt in various packaging sizes to meet your production needs:
- 25 kg fiber drums with polyethylene liners
- 50 kg fiber drums with polyethylene liners
- 1 kg laboratory bottles
- Custom packaging available upon request
Quality Assurance
Our 1,5-Naphthalenedisulfonic acid sodium salt undergoes rigorous quality control testing, including:
- Identity confirmation by FTIR spectroscopy
- Purity analysis by HPLC
- Residual solvent testing
- Heavy metal content analysis
- Physical property verification
Each batch is accompanied by a Certificate of Analysis documenting these quality parameters.