We present density information of firn core B52. B52 was drilled in the Antarctic summer season 2012/13 in January 2013 as part of the ANT-Land_2012_COFI campagin. The cores were stored in 1m bags and bag mean density was derived from the weighted mass and the calculated volume. The density information from firn core B52 were used to convert the two-way traveltime of airborne radar data to depth in meter. The associated dataset can be found here: Zuhr, Alexandra; Franke, Steven; Steinhage, Daniel; Helm, Veit: ANT 2023/24: AWI airborne ultra-wideband radar data over the plateau area in western Dronning Maud Land, East Antarctica (SnACC DML Project) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.981128.