| | | | | | | | |
| Subsidiary | | Jurisdiction of Incorporation |
| Afton Argentina Services SRL | | Argentina |
| Aditivos Mexicanos S.A. de C.V. | | Mexico |
| Afton Chemical Additives Corporation | | Virginia |
| Afton Chemical Asia Pacific LLC | | Virginia |
| Afton Chemical Asia Pte. Ltd. | | Singapore |
| Afton Chemical (Beijing) Co.,Ltd. | | China |
| Afton Chemical Canada Corporation | | Canada |
| Afton Chemical Canada Holdings, Inc | | Virginia |
Afton Chemical CH Holdings S.à.r.l. | | Luxembourg |
| Afton Chemical Corporation | | Delaware |
| Afton Chemical de Mexico S.A. de C.V. | | Mexico |
| Afton Chemical de Venezuela, C.A. | | Venezuela |
Afton Chemical EA Holdings S.à.r.l. | | Luxembourg |
| Afton Chemical France succursale D'Afton Chemical SRL | | France |
| Afton Chemical GmbH | | Germany |
| Afton Chemical India Private Limited | | India |
| Afton Chemical Industria de Aditivos Ltda | | Brazil |
| Afton Chemical Intangibles LLC | | Virginia |
| Afton Chemical International Holdings S.à.r.l. | | Luxembourg |
| Afton Chemical Japan Corporation | | Japan |
| Afton Chemical Korea Co., Ltd. | | Korea |
| Afton Chemical Limited | | United Kingdom |
| Afton Chemical Mexico Holdings LLC | | Virginia |
| Afton Chemical North Africa SARL AU | | Morocco |
| Afton Chemical SRL | | Belgium |
| Afton Chemical (Suzhou) Co., Ltd. | | China |
| Afton Chemical Switzerland GmbH | | Switzerland |
| Afton Chemical UK Holdings Limited | | United Kingdom |
| Afton Chemical UK LLP | | United Kingdom |
| Afton Cooper Limited | | United Kingdom |
| Ethyl Canada Holdings, Inc. | | Virginia |
| Ethyl Canada Inc. | | Canada |
| Ethyl Corporation | | Virginia |
| Foundry Park I, LLC | | Virginia |
| Foundry Park II, LLC | | Virginia |
| Gamble’s Hill, LLC | | Virginia |
| Gamble’s Hill Lab, LLC | | Virginia |
| Gamble’s Hill Landing, LLC | | Virginia |
| Gamble’s Hill Third Street, LLC | | Virginia |
| Gamble’s Hill Tredegar, LLC | | Virginia |
| Lewistown Road, LLC | | Virginia |
| NewMarket Development Corporation | | Virginia |
| NewMarket Investment Company | | Virginia |
| NewMarket Services Corporation | | Virginia |
| Old Town LLC | | Virginia |
| OOO Afton Chemical | | Russia |
| Servicios Afton de Mexico, S.A. de C.V. | | Mexico |
| The Edwin Cooper Corporation | | Virginia |
