We have developed a methodology and workflow (CHIC) for the automatic semantification and structuring of legacy textual scientific documents. CHIC imports common document formats (PDF, DOCX and (X)HTML) and uses a number of toolkits to extract components and convert them into SciXML. This is sectioned into text-rich and data-rich streams and stand-off annotation (SAF) is created for each. Embedded domain specific objects can be converted into XML (Chemical Markup Language). The different workflow streams can then be recombined and typically converted into RDF (Resource Description Format).