Бензиламин химические свойства, назначение, производство
Химические свойства
colourless liquid with an ammoniacal odour
Использование
Benzylamine is used as a chemical intermediate for dyes, pharmaceuticals, and polymers.It is also employed as a corrosion inhibitor and as a brightener in electroplating baths. It also finds use in the manufacture of explosives.
Определение
ChEBI: A primary amine compound having benzyl as the N-substituent. It has been isolated from Moringa oleifera (horseradish tree).
Общее описание
Colorless to light yellow liquid with a strong odor of ammonia. Floats and mixes with water.
Реакции воздуха и воды
Water soluble.
Профиль реактивности
In presence of moisture, Benzylamine may weakly corrode some metals. Liquid will attack some plastics [USCG, 1999]. Neutralize acids to form salts plus water in exothermic reactions. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated in combination with strong reducing agents, such as hydrides.
Опасность
Highly toxic, strong irritant to skin and mucous membranes.
Угроза здоровью
Inhalation of vapor causes irritation of the mucous membranes of the nose and throat, and lung irritation with respiratory distress and cough. Headache, nausea, faintness, and anxiety can occur. Exposure to vapor produces eye irritation with lachrymation, conjunctivitis, and corneal edema resulting in halos around lights. Direct local contact with liquid is known to produce severe and sometimes permanent eye damage and skin burns. Vapors may also produce primary skin irritation and dermatitis.
Пожароопасность
Special Hazards of Combustion Products: Toxic nitrogen oxides may form in a fire.
Химическая реактивность
Reactivity with Water: No reaction; Reactivity with Common Materials: In presence of moisture may severely corrode some metals. In liquid state this chemical will attack some plastics; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Flush with water; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.
хранилище
Benzylamine is slowly oxidized on contact with air and forms benzalbenzylamine. It also reacts with carbon dioxide to form its solid carbamic acid salt. It therefore should be stored in a tight closed container for not more than one year. For longer storage, a nitrogen blanket is recommended. In Germany the conditions for storage are classified as 8L (VCI-Lagerklasse).
Методы очистки
Dry it with NaOH or KOH, then distil it under N2, through a column packed with glass helices, taking the middle fraction. Also distil it from zinc dust under reduced pressure. The picrate has m 196o (from EtOH), and the p-toluenesulfonamide has m 116o (from MeOH). [Beilstein 12 IV 2155.]
Бензиламин препаратная продукция и сырье
сырьё
препарат