o-Phenylenediamine
High-Quality o-Phenylenediamine for Industrial Applications
o-Phenylenediamine (CAS No. 95-54-5) is an important chemical intermediate widely used in dye synthesis, pharmaceutical manufacturing, and analytical chemistry. Our company specializes in producing high-purity o-Phenylenediamine that meets international quality standards.
Product Specifications
- Chemical Name: o-Phenylenediamine
- Synonyms: 1,2-Diaminobenzene, OPD
- CAS Number: 95-54-5
- Molecular Formula: C6H8N2
- Appearance: Light yellow to brown crystalline powder
- Purity: ≥99.5%
- Melting Point: 101-104°C
- Boiling Point: 256-258°C
- Solubility: Soluble in water, ethanol, and ether
Technical Data Table
| Parameter | Specification | Test Method |
|---|---|---|
| Assay | ≥99.5% | HPLC |
| Moisture Content | ≤0.5% | Karl Fischer |
| Residue on Ignition | ≤0.1% | Gravimetric |
| Heavy Metals (as Pb) | ≤10 ppm | ICP-MS |
| Iron Content | ≤5 ppm | AAS |
| Chloride Content | ≤50 ppm | Ion Chromatography |
Applications of o-Phenylenediamine
- Manufacturing of azo dyes and pigments
- Production of benzimidazole fungicides
- Synthesis of pharmaceutical intermediates
- Component in hair dyes and colorants
- Reagent in analytical chemistry
- Production of rubber chemicals
Packaging Options
- 25 kg fiber drums with inner PE bags
- 50 kg steel drums with inner PE lining
- 500 kg super sacks for bulk orders
- Custom packaging available upon request
Storage and Handling
Store o-Phenylenediamine in a cool, dry, well-ventilated area away from direct sunlight. Keep container tightly closed when not in use. Avoid contact with oxidizing agents and strong acids. Always use appropriate personal protective equipment when handling this chemical.
o-Phenylenediamine FAQ
1. What is the shelf life of o-Phenylenediamine?
When stored properly in its original packaging under recommended conditions, o-Phenylenediamine has a shelf life of 24 months from the date of manufacture. The product should be stored in a cool, dry place away from direct sunlight and moisture. For long-term storage, we recommend keeping the material under inert gas atmosphere to prevent oxidation.
2. What safety precautions should be taken when handling o-Phenylenediamine?
o-Phenylenediamine requires careful handling as it may cause skin irritation and allergic reactions. Always wear appropriate PPE including chemical-resistant gloves, safety goggles, and protective clothing. Work in a well-ventilated area or use local exhaust ventilation. Avoid inhalation of dust and contact with skin and eyes. In case of contact, immediately flush with plenty of water and seek medical advice.
3. What is the difference between o-Phenylenediamine and p-Phenylenediamine?
While both are diaminobenzene isomers, o-Phenylenediamine (1,2-diaminobenzene) has the amino groups adjacent to each other, whereas p-Phenylenediamine (1,4-diaminobenzene) has them opposite each other on the benzene ring. This structural difference leads to variations in chemical properties and applications. o-Phenylenediamine is more commonly used in dye and pharmaceutical synthesis, while p-Phenylenediamine is primarily used in hair dyes and rubber chemicals.
4. Can o-Phenylenediamine be used in pharmaceutical applications?
Yes, o-Phenylenediamine serves as an important intermediate in the synthesis of various pharmaceutical compounds, particularly benzimidazole derivatives which are used in antifungal and antiparasitic medications. Our high-purity grade meets the requirements for pharmaceutical applications, with controlled levels of impurities and heavy metals.
5. What analytical methods are used for quality control of o-Phenylenediamine?
We employ multiple analytical techniques to ensure the quality of our o-Phenylenediamine. High-performance liquid chromatography (HPLC) is used for purity determination, while moisture content is measured using Karl Fischer titration. Heavy metal content is analyzed via ICP-MS, and other parameters are verified through standard gravimetric and spectrophotometric methods. Each batch comes with comprehensive certificate of analysis.