UN 1246 Methyl methacrylate can only be transported as cargo.
It cannot be accepted as baggage, neither hand-carried or checked. Items which a passenger is permitted as baggage are only those items shown on DGR Table 2.3.A. If an item is not shown as acceptable on this Table 2.3.A, it cannot be carried as baggage. Expanded interpretation must be discouraged. Permissible flammable liquid is only such toiletry items as perfume.
UN 1246 May be carried as Excepted Quantity (E2), inner package maximum 30mL and outer maximum 500mL however this is only allowed as cargo. DGR 188.8.131.52 Baggage and Post clearly states: Dangerous goods in excepted quantities are not permitted in or as checked or carry-on baggage or in the mail.