This substance of packing group I shall not be transported or handed over for carriage in portable tanks in the molten state according to 4.2.1.19 of the IMDG Code because the assigned tank instruction in column 13 of the Dangerous Goods List in Chapter 3.2 does not refer to carriage of the substance above its melting point. 

For this substance, carriage in the molten state is therefore prohibited.