v3.25.2
Cover - shares
6 Months Ended
Jun. 30, 2025
Aug. 14, 2025
Cover [Abstract]    
Entity Registrant Name ASP Isotopes Inc.  
Entity Central Index Key 0001921865  
Document Type 10-Q  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Small Business true  
Entity Shell Company false  
Entity Emerging Growth Company true  
Entity Current Reporting Status Yes  
Document Period End Date Jun. 30, 2025  
Entity Filer Category Non-accelerated Filer  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2025  
Entity Ex Transition Period false  
Entity Common Stock Shares Outstanding   91,913,109
Entity File Number 001-41555  
Entity Incorporation State Country Code DE  
Entity Tax Identification Number 87-2618235  
Entity Address Address Line 1 601 Pennsylvania Avenue NW  
Entity Address Address Line 2 South Building  
Entity Address City Or Town Washington  
Entity Address State Or Province DC  
Entity Address Postal Zip Code 20004  
City Area Code 202  
Local Phone Number 756-2245  
Security 12b Title Common Stock, par value $0.01per share  
Trading Symbol ASPI  
Security Exchange Name NASDAQ  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Entity Address Address Line 3 Suite 900