Sinopec
China's largest petroleum refiner; protected from OFAC Iran sanctions by MOFCOM's May 2026 Blocking Rules.
Last refreshed: 19 May 2026
Why does the US keep skipping Sinopec in its Iran sanctions rounds?
Timeline for Sinopec
Mentioned in: OFAC SDN round skips mainland refineries again
Iran Conflict 2026- Why hasn't OFAC sanctioned Sinopec for buying Iranian oil?
- OFAC has deliberately skipped Sinopec across all May 2026 SDN rounds. Designating China's largest refiner would escalate the US-China confrontation at a moment when Washington needs Beijing's cooperation on Iran nuclear diplomacy.Source: OFAC
- What are China's MOFCOM Blocking Rules and how do they protect Sinopec?
- China's MOFCOM activated its 2021 Blocking Rules for the first time on 2 May 2026, legally barring Chinese firms including Sinopec from complying with OFAC Iran sanctions designations. The rules create a private right of action in Chinese courts against any firm that complies with US sanctions.Source: MOFCOM
- How much Iranian oil does Sinopec buy?
- Sinopec is among China's largest buyers of Iranian crude, processing it through its domestic refinery network. Precise volumes are not publicly disclosed, but Sinopec has maintained procurement through all 2026 OFAC sanction rounds.
- Is Sinopec a Chinese government company?
- Yes. Sinopec is a state-owned enterprise majority-controlled by Sinopec Group, itself wholly owned by the Chinese government. This state ownership is a key reason the US has not sanctioned it — designating a Chinese SOE is a qualitatively different diplomatic act from designating a private Shell company.
Background
Sinopec (China Petroleum and Chemical Corporation) is China's largest petroleum refiner and one of the world's biggest energy companies by revenue. It became a focal point of the US-Iran sanctions confrontation in May 2026 when OFAC's successive SDN rounds — including 11, 12, 15 and 19 May — repeatedly declined to designate major mainland Chinese refineries. The pattern reflected a deliberate US calculation to avoid triggering full Chinese retaliation as nuclear diplomacy continued.
Sinopec is a state-owned enterprise headquartered in Beijing, majority-owned by the Chinese government through Sinopec Group. It processes Iranian crude through its refinery network and has maintained procurement channels that Western sanctions have consistently failed to sever. Beijing's 2 May 2026 MOFCOM Blocking Rules, activated for the first time, explicitly barred Chinese firms — including Sinopec — from complying with OFAC Iran designations, creating a direct legal conflict between US and Chinese jurisdiction.
The company's structural insulation from secondary sanctions illustrates the ceiling on US economic pressure: designating Sinopec would trigger immediate diplomatic escalation with Beijing at a moment when Washington is seeking Chinese cooperation on Iran nuclear talks. That constraint has made Sinopec a reliable conduit for Iranian oil exports throughout the 2026 conflict.
