Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Aug. 08, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	SOLIGENIX, INC.
Entity Central Index Key	0000812796
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, 2019
Document Fiscal Year Focus	2019
Entity Reporting Status Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Ex Transition Period	false
Entity File Number	000-16929
Entity Interactive Data Current	Yes
Entity Incorporation, State Country Code	DE
Entity Common Stock, Shares Outstanding		20,300,485