Solvay S.A.

Solvay launches tender offer to buy-back senior USD 400 and USD 250 million bonds

Brussels, September 21, 2017 --- Solvay has launched a cash tender offer to repurchase bonds on the following issuances:

• Senior USD 400 million debt at 3.5%, due in 2023    
  (CUSIP/ISIN: 232820AJ9/US232820AJ97).
• Senior USD 250 million debt at 3.95%, due in 2029  
  (CUSIP/ISIN: 232820AK6/US232820AK60).

The offer is made to eligible bondholders until September 27, 2017, on the terms and subject to the conditions further described in the following link:           https://dl.bourse.lu/dl?v=ADyMFy5zxNFitbuuk6wDBjvIuVSxL3UjLsVi7mZkXY9N ....

This announcement does not constitute an invitation to participate in cash tender offers to repurchase the bonds mentioned herein (the "Notes", and such tender offers, the "Offers") in any jurisdiction in which, or to any person to or from whom, it is unlawful to make such invitation or for there to be such participation under applicable securities laws.  The distribution of this announcement in certain jurisdictions may be restricted by law.

The communication of this announcement and any other documents or materials relating to the Offers is not being made, and such documents and/or materials have not been approved, by an authorised person for the purposes of section 21 of the Financial Services and Markets Act 2000, as amended. Accordingly, such documents and/or materials are not being distributed to, and must not be passed on to, the general public in the United Kingdom. The communication of such documents and/or materials as a financial promotion is only being made to those persons in the United Kingdom falling within the definition of investment professionals (as defined in Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended (the "Financial Promotion Order")) or persons who are within Article 43(2) of the Financial Promotion Order or any other persons to whom it may otherwise lawfully be made under the Financial Promotion Order (such persons together being the "Relevant Persons"). The Offers are only available to Relevant Persons and the transactions contemplated in this announcement will be available only to, or engaged in only with, Relevant Persons, and this announcement and any other documents and/or materials produced in connection with the Offers must not be relied or acted upon by persons other than Relevant Persons.