Ethylenediamine
Ethylenediamine: Comprehensive Technical Guide
Ethylenediamine is a crucial chemical compound with wide applications across various industries. This detailed guide provides exhaustive technical specifications, safety information, and answers to common questions about Ethylenediamine.
Product Specifications
- Chemical Formula: C₂H₈N₂
- Molecular Weight: 60.10 g/mol
- Appearance: Colorless to pale yellow liquid
- Odor: Ammonia-like
- Density: 0.899 g/cm³ at 25°C
- Boiling Point: 116-117°C
- Melting Point: 8.5°C
- Flash Point: 34°C (closed cup)
- Solubility: Miscible with water and alcohol
Technical Data Table
| Parameter | Specification |
|---|---|
| Purity | ≥99% |
| Water Content | ≤0.5% |
| Impurity Content | ≤0.1% |
| Viscosity at 25°C | 1.6 mPa·s |
| Refractive Index (n20/D) | 1.4565 |
| Vapor Pressure | 13.3 hPa at 20°C |
Applications of Ethylenediamine
Ethylenediamine serves as a vital intermediate in numerous industrial processes:
- Pharmaceutical manufacturing (antihistamines, aminophylline)
- Epoxy resin hardener
- Corrosion inhibitor
- Textile auxiliaries
- Fungicides and pesticides
- Chelating agent in analytical chemistry
Ethylenediamine Safety Information
| Safety Parameter | Value |
|---|---|
| NFPA Health Rating | 3 (Severe) |
| NFPA Flammability Rating | 2 (Moderate) |
| NFPA Reactivity Rating | 1 (Slight) |
| OSHA Permissible Exposure Limit (PEL) | 10 ppm (25 mg/m³) |
| NIOSH Recommended Exposure Limit (REL) | 10 ppm (25 mg/m³) |
Ethylenediamine FAQ
Q: What are the proper storage conditions for Ethylenediamine?
A: Ethylenediamine should be stored in tightly closed containers in a cool, dry, well-ventilated area away from heat sources and incompatible materials (acids, oxidizers). Storage temperature should be maintained between 15-25°C. Always use corrosion-resistant containers made of stainless steel or polyethylene.
Q: What personal protective equipment is required when handling Ethylenediamine?
A: When handling Ethylenediamine, workers should wear chemical-resistant gloves (nitrile or neoprene), splash-proof goggles, face shield, and appropriate respiratory protection if vapor concentrations exceed exposure limits. Chemical-resistant aprons and boots are recommended for extensive handling or potential splashes.
Q: What are the first aid measures for Ethylenediamine exposure?
A: For skin contact: Immediately flush with plenty of water for at least 15 minutes while removing contaminated clothing. For eye contact: Rinse cautiously with water for several minutes, remove contact lenses if present. Inhalation: Move to fresh air and provide oxygen if breathing is difficult. Ingestion: Rinse mouth and seek immediate medical attention. Never induce vomiting.
Handling Precautions
- Use only in well-ventilated areas or with local exhaust ventilation
- Avoid contact with eyes, skin, and clothing
- Ground containers during transfer to prevent static sparks
- Use non-sparking tools and explosion-proof equipment
- Prohibit eating, drinking, or smoking in areas where Ethylenediamine is handled
Environmental Considerations
| Parameter | Value |
|---|---|
| Biodegradability | Readily biodegradable (>70% in 28 days) |
| Bioaccumulation Potential | Low (Log Pow: -1.9) |
| Aquatic Toxicity (LC50 Fish) | 100 mg/l (96h, zebrafish) |
| Soil Absorption | High (Koc: 10) |
Shipping Information
- UN Number: UN1604
- Proper Shipping Name: Ethylenediamine
- Hazard Class: 8 (Corrosive), 3 (Flammable Liquid)
- Packing Group: II
- Marine Pollutant: No
Ethylenediamine FAQ (Continued)
Q: What is the shelf life of Ethylenediamine?
A: When stored properly in original containers under recommended conditions, Ethylenediamine typically maintains its quality for 24 months from the date of manufacture. However, the product should be routinely checked for discoloration or contamination before use.
Q: How should Ethylenediamine spills be handled?
A: For small spills: Absorb with inert material (vermiculite, sand) and place in chemical waste containers. Large spills: Contain and prevent entry into waterways or drains. Neutralize with dilute acid (acetic or hydrochloric) and collect for proper disposal. Always wear appropriate PPE during cleanup operations.
Q: What are the compatible materials for Ethylenediamine storage and handling?
A: Ethylenediamine is compatible with stainless steel (304 or 316), polyethylene, polypropylene, and Teflon. Avoid contact with aluminum, copper, brass, or other non-ferrous metals as well as natural rubber and some elastomers.