Diisocyanate (Diisocyanate) is a chemical that is widely used in industry, particularly in the manufacture of polyurethanes and in curing agents for industrial paints, glues, varnishes and resins. It can have harmful effects on respiratory health, such as causing asthma and other respiratory diseases. Skin contact may also cause systemic immune system effects. Diisocyanates are considered to be dangerous chemicals in accordance with Article 2 (b) of Directive 98/24/EC of the European Parliament and of the Council. At present, there are no binding occupational exposure limits or short-term exposure limits applicable to diisocyanates at EU level. For the first time, the proposal sets a limit for diisocyanates: 6 µ per cubic metre for occupational exposure; g NCO/m³ Short-term exposure limit is 12µ g NCO/m³ . In view of the current questions about the feasibility of technical measurements and the time needed to adjust the implementation of risk management measures, the proposal gives an occupational exposure limit of 10 µ per cubic metre; g NCO/m³ And short-term exposure limit of 20 µ g NCO/m³ For a transitional period until 31 December 2028.