(Commission File No. 1-14862 )

On September 29, 2017, at 2:00 p.m., at the Company’s office located at Rua Lemos Monteiro, n° 120, 15º andar, São Paulo/SP, CEP 05501-050, an Extraordinary Meeting of the Board of Directors of BRASKEM S.A . was held with the presence of the undersigned Board Members, as per the signatures placed at the end of these minutes. Chief Executive Officer Fernando Musa, Officers Gustavo Valverde and Pedro Freitas, and Marcella Menezes Fagundes, Business Counsel, and Mr. Guilherme Furtado, Corporate Governance Manager, were also present. The Chairman of the Board of Directors, Mr. Newton Sergio de Souza, presided over the meeting, and Mrs. Marcella Menezes Fagundes acted as secretary. AGENDA : I) Subjects for deliberation : After due analysis of the Proposal for Deliberation (“PD”) , copies and related documentation of which were previously forwarded to the Board Members for cognizance, pursuant to the Internal Regulations thereof, and shall remain duly filed at the Company’s headquarters, the following deliberation was approved by unanimous vote of the attendees, under the terms and conditions set out in the respective PD: 1) PD.CA-BAK-11/2017 – Election of Officer: Approval of the election of Mr. Luiz Fernando Marinho Nunes , Brazilian citizen, married under the separate property ruling, chemical engineer, enrolled with the Individual Taxpayer’s Register of the Ministry of Finance (CPF/MF) under No. 236.194.737-49, bearer of Identity Card RG No. 02412030-5 SSP-RJ, resident and domiciled in the City of Rio de Janeiro, State of Rio de Janeiro, with business address at Avenida República do Chile, nº 500, 30º andar, Centro, Rio de Janeiro/RJ, CEP 20031-170, to occupy the vacated position and to perform the duties of Company Officer without specific title for the remainder of the term of office that will end at the Board of Directors’ Meeting that will take place after the Ordinary General Meeting is held in 2018. The Officer hereby elected shall take office on October 2, 2017, upon submission of the relevant deed of investiture, drawn up in a proper book, which shall state the compliance with the effective law and regulations, and upon representation, for the purposes of article 37, item II, of Law No. 8,934, of November 18, 1994, with wording given by Law No. 10,194, of February 14, 2001, according to the provision of paragraph 1 of article 147, of Law 6,404, of December 15, 1976, that he is not prevented by special law nor has he been sentenced for a crime of bankruptcy, prevarication, bribery or payoff, graft, embezzlement, or a crime against the welfare, public faith or property, nor is he subject to a criminal penalty that prohibits, even if temporarily, the access to public positions; he also presented, in order to comply with the provisions of CVM Rulings No. 358, of January 3, 2002, and No. 367, of May 29, 2002, written statements in accordance with the terms of said Rulings, which have been filed in the headquarters of the Company.On such occasion, the Board Members welcomed Mr. Luiz Fernando Marinho Musa. Due to the election approved above, the Executive Office of the Company has now the following composition: Fernando Musa – Chief Executive Officer, Gustavo Sampaio Valverde, Edison Terra Filho; Marcelo de Oliveira Cerqueira; Marcelo Arantes de Carvalho; Luiz Fernando Marinho Nunes and Pedro van Langendonck Teixeira de Freitas – Investors’ Relations Officer. II) Subjects for Acknowledgement : nothing to record. III) Subjects of Interest to the Company : nothing to record. IV) Adjournment : As there were no further subjects to be discussed, these minutes were drawn up, which, after read, discussed and found to be in order, are signed by all the attending Board Members, by the acting Chairman and by the Secretary of the Meeting.