Division 3.1.2.3 Specific considerations for classification of substances as acutely toxic by the inhalation route United Kingdom Original text. Later amendments are not shown. 3.1.2.3.1Division 3.1.2.3.1 3.1.2.3.2Division 3.1.2.3.2 3.1.2.3.3Division 3.1.2.3.3 ← Division 3.1.2.2.1 Division 3.1.2.3 Division 3.1.2.3.1 →