Commitments and Contingencies	12 Months Ended
Dec. 31, 2024
Disclosure Of Commitments And Contingencies [Abstract]
Commitments and Contingencies	8. Commitments and Contingencies Purchase of Cyclotron In November 2023, the cyclotron that the Company ordered was shipped. As of December 31, 2023, the equipment had not been delivered; however, the Company was obligated to purchase this equipment and recorded the full cost of $1,653,000 in other noncurrent assets and other noncurrent liabilities on the consolidated balance sheet as of December 31, 2023. In March 2024, the cyclotron was received by the Company and is recorded as property and equipment. The financing company has paid the vendor. During 2024, the Company financed the cost of this equipment and is recorded in notes payable as of December 31, 2024. Klydon Proprietary Limited In November 2021, the Company entered into an agreement with Klydon Proprietary Limited (“Klydon”) to design and build a plant to enrich Molybdenum in South Africa (the "Turnkey Contract"). The initial phase of the project included the building of a plant that can support the production of at least 5kgs of Mo-100. The contracted cost for this phase was $6,800,000. The second phase of the project included the production to be increased to 20kgs of Mo-100 with an additional cost of $6,000,000. Klydon performed a portion of the services required under the Turnkey Contract; however, some services were incomplete and many of the services were not completed within the time frame required. As a result, Klydon and ASP South Africa entered into an Acknowledgement of Debt Agreement dated November 30, 2022, whereby Klydon (i) agreed to pledge its assets (the “Pledged Assets”) to ASP South Africa to secure its performance of the Turnkey Contract by December 31, 2022, and (ii) acknowledged that ASP South Africa would suffer damages in the amount of $6,050,000 (“Damage Amount”) should it fail to perform. Under the Acknowledgement of Debt Agreement, the Pledged Assets would serve as collateral for Klydon’s obligation to pay the Damage Amount should Klydon fail to perform. In connection therewith, also on November 30, 2022, ASP South Africa and Klydon entered into a Deed of Security Agreement whereby, if Klydon failed to complete its obligations under the Turnkey Contract by December 31, 2022, all of Klydon’s rights of any nature to and interests of any nature in the Pledged Assets would be transferred to ASP South Africa. Klydon failed to complete its obligations under the Turnkey Contract by December 31, 2022, however, the Company did not perfect its interests in the assets until April 4, 2023. The Company did not believe that the amounts owed by Klydon were realizable, nor did the Company know the timing of any recovery payments. Therefore, a loss recovery receivable was not recorded at any time prior to April 4, 2023. On April 4, 2023, the Company perfected its interest under the Acknowledgement of Debt Agreement, pursuant to which the Company acquired certain intellectual property from Klydon (“Klydon Settlement”). In addition, the Company acquired Klydon's interest in four entities which are inactive and in the process of being dissolved. The Company has concluded that the Klydon Settlement is accounted for as an asset acquisition under ASC 805 since the assets acquired were concentrated in a single identifiable asset from a related party. In conjunction with the Klydon Settlement, the Company recorded an increase to additional paid-in capital for the settlement of all liabilities owed to Klydon at the time of settlement totaling $626,223. Two individuals who were officers and board members of Klydon, one who is now an officer of ASP Isotopes Inc. and the other who was a scientific advisor of ASP Isotopes Inc., received warrants to purchase common stock of the Company and therefore are considered related parties. See Notes 10 and 12. The individual who was a scientific advisor of ASP Isotopes Inc, has resigned from that role, given his age and deteriorating health. Share Purchase Agreement relating to PET Labs On October 31, 2023, the Company entered into a Share Purchase Agreement with Nucleonics Imaging Proprietary Limited, a company incorporated in the Republic of South Africa (the “Seller”), relating to the purchase and sale of ordinary shares in the issued share capital of PET Labs. PET Labs is a South African radiopharmaceutical operations company, dedicated to nuclear medicine and the science of radiopharmaceutical production. Under the Purchase Agreement, the Company has agreed to purchase from the Seller 51 ordinary shares in the issued share capital of PET Labs (the “Initial Sale Shares”) (representing 51% of the issued share capital of PET Labs) and has an option to purchase from the Seller the remaining 49 ordinary shares in the issued share capital of PET Labs (the “Option Shares”) (representing the remaining 49% of the issued share capital of PET Labs). The Company agreed to pay to the Seller an aggregate of $2,000,000 for the Initial Sale Shares, of which aggregate amount of $500,000 was payable on the completion of the sale of the Initial Sale Shares and $1,500,000 is payable on demand after one calendar year from the agreement date. In January 2024, the Company agreed to pay $264,750 to the Seller. The balance due for the Initial Sale Shares as of December 31, 2024 is $1,235,250 and is recorded in other current liabilities on the consolidated balance sheet. If the Company exercises its option to purchase the Option Shares (which option is exercisable from the agreement date until January 31, 2027, provided that the Initial Sale Shares have been paid for in full), the Company has agreed to pay $2,200,000 for the Option Shares. PET Labs Global In August 2024, PET Labs Global entered into a three-year service agreement with Cayman Enterprise City and is licensed to operate from within the Cayman Islands’ Special Economic Zone (“SEZ”). The service fee includes among other things the right to use certain office space and associated facilities within the SEZ. The Company has applied the guidance in ASC 842 and determined that this agreement is not a leasing arrangement. Management has determined that based on the nature of the combined services the expense should be recognized as incurred. The Company recorded fees under this agreement totaling $26,459 for the year ended December 31, 2024. Contingencies From time to time, the Company may have certain contingent liabilities that arise in the ordinary course of its business activities. The Company accrues liabilities for such matters when future expenditures are probable and such expenditures can be reasonably estimated. On December 4, 2024, a purported stockholder of the Company filed a putative securities class action on behalf of purchasers of the Company’s securities between October 30, 2024 through November 26, 2024 against ASP Isotopes Inc. and certain of its executive officers in the United States District Court for the Southern District of New York (Corredor v. ASP Isotopes Inc., et al., Case No. 1:24-cv-09253 (S.D.N.Y)) (the “Securities Class Action”). The Securities Class Action alleges that the Company, its chief executive officer and chief financial officer (“Defendants”) made materially misleading or false statements or omissions regarding the Company’s business and asserts purported claims under §§ 10(b) and 20(a) of the Securities Exchange Act of 1934 and SEC Rule 10b-5 promulgated thereunder. The complaint seeks unspecified compensatory damages, attorney’s fees and costs. Defendants intend to vigorously defend against the Securities Class Action; however, we cannot be certain of the outcome and, if decided adversely to us, our business and financial condition may be adversely affected. In addition to the matters described above, from time to time, we may become subject to arbitration, litigation or claims arising in the ordinary course of business. The results of any current or future claims or proceedings cannot be predicted with certainty, and regardless of the outcome, litigation can have an adverse impact on us because of defense and litigation costs, diversion of management resources, reputational harm and other factors.

Commitments and Contingencies

12 Months Ended

Dec. 31, 2024

Disclosure Of Commitments And Contingencies [Abstract]

8. Commitments and Contingencies

Purchase of Cyclotron

In November 2023, the cyclotron that the Company ordered was shipped. As of December 31, 2023, the equipment had not been delivered; however, the Company was obligated to purchase this equipment and recorded the full cost of $1,653,000 in other noncurrent assets and other noncurrent liabilities on the consolidated balance sheet as of December 31, 2023.

In March 2024, the cyclotron was received by the Company and is recorded as property and equipment. The financing company has paid the vendor. During 2024, the Company financed the cost of this equipment and is recorded in notes payable as of December 31, 2024.

Klydon Proprietary Limited

In November 2021, the Company entered into an agreement with Klydon Proprietary Limited (“Klydon”) to design and build a plant to enrich Molybdenum in South Africa (the "Turnkey Contract"). The initial phase of the project included the building of a plant that can support the production of at least 5kgs of Mo-100. The contracted cost for this phase was $6,800,000. The second phase of the project included the production to be increased to 20kgs of Mo-100 with an additional cost of $6,000,000.

Klydon performed a portion of the services required under the Turnkey Contract; however, some services were incomplete and many of the services were not completed within the time frame required. As a result, Klydon and ASP South Africa entered into an Acknowledgement of Debt Agreement dated November 30, 2022, whereby Klydon (i) agreed to pledge its assets (the “Pledged Assets”) to ASP South Africa to secure its performance of the Turnkey Contract by December 31, 2022, and (ii) acknowledged that ASP South Africa would suffer damages in the amount of $6,050,000 (“Damage Amount”) should it fail to perform. Under the Acknowledgement of Debt Agreement, the Pledged Assets would serve as collateral for Klydon’s obligation to pay the Damage Amount should Klydon fail to perform. In connection therewith, also on November 30, 2022, ASP South Africa and Klydon entered into a Deed of Security Agreement whereby, if Klydon failed to complete its obligations under the Turnkey Contract by December 31, 2022, all of Klydon’s rights of any nature to and interests of any nature in the Pledged Assets would be transferred to ASP South Africa. Klydon failed to complete its obligations under the Turnkey Contract by December 31, 2022, however, the Company did not perfect its interests in the assets until April 4, 2023. The Company did not believe that the amounts owed by Klydon were realizable, nor did the Company know the timing of any recovery payments. Therefore, a loss recovery receivable was not recorded at any time prior to April 4, 2023.

On April 4, 2023, the Company perfected its interest under the Acknowledgement of Debt Agreement, pursuant to which the Company acquired certain intellectual property from Klydon (“Klydon Settlement”). In addition, the Company acquired Klydon's interest in four entities which are inactive and in the process of being dissolved. The Company has concluded that the Klydon Settlement is accounted for as an asset acquisition under ASC 805 since the assets acquired were concentrated in a single identifiable asset from a related party. In conjunction with the Klydon Settlement, the Company recorded an increase to additional paid-in capital for the settlement of all liabilities owed to Klydon at the time of settlement totaling $626,223.

Two individuals who were officers and board members of Klydon, one who is now an officer of ASP Isotopes Inc. and the other who was a scientific advisor of ASP Isotopes Inc., received warrants to purchase common stock of the Company and therefore are considered related parties. See Notes 10 and 12. The individual who was a scientific advisor of ASP Isotopes Inc, has resigned from that role, given his age and deteriorating health.

Share Purchase Agreement relating to PET Labs

On October 31, 2023, the Company entered into a Share Purchase Agreement with Nucleonics Imaging Proprietary Limited, a company incorporated in the Republic of South Africa (the “Seller”), relating to the purchase and sale of ordinary shares in the issued share capital of PET Labs. PET Labs is a South African radiopharmaceutical operations company, dedicated to nuclear medicine and the science of radiopharmaceutical production.

Under the Purchase Agreement, the Company has agreed to purchase from the Seller 51 ordinary shares in the issued share capital of PET Labs (the “Initial Sale Shares”) (representing 51% of the issued share capital of PET Labs) and has an option to purchase from the Seller the remaining 49 ordinary shares in the issued share capital of PET Labs (the “Option Shares”) (representing the remaining 49% of the issued share capital of PET Labs). The Company agreed to pay to the Seller an aggregate of $2,000,000 for the Initial Sale Shares, of which aggregate amount of $500,000 was payable on the completion of the sale of the Initial Sale Shares and $1,500,000 is payable on demand after one calendar year from the agreement date. In January 2024, the Company agreed to pay $264,750 to the Seller. The balance due for the Initial Sale Shares as of December 31, 2024 is $1,235,250 and is recorded in other current liabilities on the consolidated balance sheet. If the Company exercises its option to purchase the Option Shares (which option is exercisable from the agreement date until January 31, 2027, provided that the Initial Sale Shares have been paid for in full), the Company has agreed to pay $2,200,000 for the Option Shares.

PET Labs Global

In August 2024, PET Labs Global entered into a three-year service agreement with Cayman Enterprise City and is licensed to operate from within the Cayman Islands’ Special Economic Zone (“SEZ”). The service fee includes among other things the right to use certain office space and associated facilities within the SEZ. The Company has applied the guidance in ASC 842 and determined that this agreement is not a leasing arrangement. Management has determined that based on the nature of the combined services the expense should be recognized as incurred. The Company recorded fees under this agreement totaling $26,459 for the year ended December 31, 2024.

Contingencies

From time to time, the Company may have certain contingent liabilities that arise in the ordinary course of its business activities. The Company accrues liabilities for such matters when future expenditures are probable and such expenditures can be reasonably estimated.

On December 4, 2024, a purported stockholder of the Company filed a putative securities class action on behalf of purchasers of the Company’s securities between October 30, 2024 through November 26, 2024 against ASP Isotopes Inc. and certain of its executive officers in the United States District Court for the Southern District of New York (Corredor v. ASP Isotopes Inc., et al., Case No. 1:24-cv-09253 (S.D.N.Y)) (the “Securities Class Action”). The Securities Class Action alleges that the Company, its chief executive officer and chief financial officer (“Defendants”) made materially misleading or false statements or omissions regarding the Company’s business and asserts purported claims under §§ 10(b) and 20(a) of the Securities Exchange Act of 1934 and SEC Rule 10b-5 promulgated thereunder. The complaint seeks unspecified compensatory damages, attorney’s fees and costs. Defendants intend to vigorously defend against the Securities Class Action; however, we cannot be certain of the outcome and, if decided adversely to us, our business and financial condition may be adversely affected.

In addition to the matters described above, from time to time, we may become subject to arbitration, litigation or claims arising in the ordinary course of business. The results of any current or future claims or proceedings cannot be predicted with certainty, and regardless of the outcome, litigation can have an adverse impact on us because of defense and litigation costs, diversion of management resources, reputational harm and other factors.