Triethylamine

Product Details

CasNo： 121-44-8

MF： C6H15N

Appearance： liquid

Delivery Time： 15 days

Packing： 200kg/drum

Purity： 99%

1. Basic Information

• Chinese Name: 三乙胺 (Triethylamine)
• English Name: Triethylamine
• Chinese Aliases: 三乙基胺，N,N - 二乙基乙胺 (N,N-Diethylethanamine)
• CAS Number: 121-44-8
• Molecular Formula: C₆H₁₅N
• Molecular Weight: 101.19
• Appearance: Colorless oily liquid with a strong ammonia-like odor.

2. Physicochemical Properties

• Density: 0.8 ± 0.1 g/cm³ (at 20℃; lighter than water, so spilled liquid floats on water surfaces).
• Melting Point: -115℃ (extremely low freezing point, remains liquid in most industrial and laboratory environments).
• Boiling Point: 90.5 ± 8.0℃ (moderate volatility; vapor easily accumulates at room temperature if not sealed).
• Flash Point: -6.7 ± 0.0℃ (highly flammable; classified as a "flammable liquid"—vapors can ignite upon contact with open flames, sparks, or static electricity).
• Solubility: Slightly soluble in water (approximately 5.5 g/100 mL at 20℃); miscible with most organic solvents, including ethanol, ether, and acetone. Its aqueous solution exhibits strong alkalinity.
• Stability: Chemically stable under normal storage conditions but unstable with oxidizing agents. It decomposes easily when reacting with potassium permanganate (KMnO₄) and is incompatible with strong oxidizers and acids (e.g., sulfuric acid, hydrochloric acid—violent reactions may occur).
• Vapor Density: 3.48 (heavier than air), so vapors tend to settle in low-lying areas, increasing fire and inhalation risk.

3. Quality Indicators

Typical industrial-grade Triethylamine (CAS 121-44-8) adheres to strict purity and impurity control standards (taking premium grade as an example):

4. Applications

• Solvent: Used to dissolve and extract non-polar compounds in organic synthesis, such as in the purification of pharmaceutical intermediates and the separation of natural products.
• Alkaline Catalyst: A key catalyst for esterification, carboxylic acid condensation, and nucleophilic substitution reactions. For example, it accelerates the ethoxylation of n-butanol to produce ethylene glycol monobutyl ether.
• Neutralizing Agent: Efficiently neutralizes acidic compounds in formulations, such as adjusting pH in rubber processing or pharmaceutical purification.
• Rubber Industry: Serves as a processing aid and anti-aging agent to improve rubber elasticity, durability, and resistance to thermal/oxidative degradation.
• Chemical Synthesis:
  • Raw material for manufacturing pharmaceuticals (e.g., local anesthetics), pesticides (e.g., insecticides), and polymerization inhibitors (e.g., diethylhydroxylamine).
  • Acts as an acid scavenger (binds by-product acids to maintain reaction conditions) and cyano transfer agent in organic reactions.
• Other Fields: Used in the production of high-energy fuels and rubber vulcanizing agents.

5. Packaging and Storage

• Packaging:
  • Small-volume packaging: Narrow-mouth steel drums; ampoules packed in ordinary wooden cases; threaded glass bottles, iron-cap pressure glass bottles, plastic bottles, or metal cans (tins) with outer ordinary wooden cases.
  • Bulk packaging: Tank trucks or large steel drums (inner wall coated with anti-corrosion resin to prevent metal-amine reactions) for industrial-scale use.
• Storage Conditions:
  • Store in a cool, well-ventilated warehouse with a temperature not exceeding 30℃. Keep packages tightly sealed to avoid contact with air.
  • Separate from oxidizing agents and acids (e.g., nitric acid, hydrogen peroxide) to prevent violent reactions.
  • Use explosion-proof lighting and ventilation equipment in the storage area. Prohibit smoking or open flames nearby.
• Shelf Life: Typically 12 months under proper sealed storage conditions.

6. Safety Information

• Hazards: Vapors are toxic and highly irritating. Inhalation of high concentrations can cause respiratory tract inflammation, dizziness, or nausea; skin/eye contact may result in chemical burns.
• Protective Measures: Wear chemical-resistant gloves, splash-proof goggles, and a gas mask (equipped with amine-specific filters) during handling. Ensure the workplace is well-ventilated.
• Emergency Handling:
  • In case of spillage: Evacuate the area immediately, ventilate thoroughly, and contain the spill with absorbent materials (e.g., sand, vermiculite). Do not flush with water directly (may spread the flammable liquid).
  • In case of fire: Use dry chemical extinguishers or carbon dioxide extinguishers (avoid water jets, which can disperse flammable vapors).