Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 03, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	SOLIGENIX, INC.
Entity Central Index Key	0000812796
Trading Symbol	SNGX
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Type	10-Q
Document Fiscal Period Focus	Q2
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		17,682,839