1,11-Undecanediamine(CAS: 822-08-2)

1,11-Undecanediamine is a colorless liquid with a molecular weight of approximately 172.26 g/mol. It has a solubility of up to 1.5 g/L in water and is highly reactive towards acids and bases. This diamine exhibits excellent reactivity in amine coupling reactions and polymerization. Its physical properties include a boiling point of 246°C and a melting point around -35°C.

1,11-Undecanediamine is usually synthesized through the reduction of 1,11-undecanedione with hydrogen in the presence of a catalyst like Raney nickel or a transition metal catalyst. The process involves selective hydrogenation to convert the ketone into the diamine with a yield of up to 95%. The reaction is carried out under atmospheric pressure and moderate temperature conditions.

1,11-Undecanediamine is predominantly used in the production of polyurethanes and polyurea coatings due to its excellent reactivity and ability to form strong bonds. It is also utilized in the pharmaceutical industry for the synthesis of certain drugs and in the polymer industry for creating specialty resins. Additionally, it can be found in the production of sensors and semiconductors.

When handling 1,11-Undecanediamine, it is essential to wear appropriate personal protective equipment (PPE), including gloves, safety glasses, and a lab coat. This chemical should be used in a well-ventilated area or under a fume hood due to its reactivity. Spills should be cleaned up immediately, and the area should be flushed with water. Always refer to the Safety Data Sheet (SDS) for detailed handling and emergency procedures.