Solvay press release: PARTICIPATION NOTIFICATION


Please find the latest press release published by the Solvay Group. This press release is available in English, French and Dutch on www.solvay.com

REGULATED INFORMATION

BRUSSELS, Thursday May 10, 2012, 5:40 pm (CET).

In accordance with the financial transparency rules and legislation, JP Morgan Asset Management Holdings Inc. has notified Solvay that on 8 May 2012 the total participation of its various affiliates has passed the threshold of 3% of the shares issued by Solvay S.A.

The group JP Morgan Asset Management Holdings Inc. held 2,580,788 Solvay shares on 8 May 2012 through the following affiliates:

JP Morgan Asset Management UK Ltd1,190,433 Solvay shares
JP Morgan, Investment Management Inc.1,195,055 Solvay shares
JP Morgan Asset Management (Taiwan)12,374 Solvay shares
JP Morgan Chase Bank, National Association182,926 Solvay shares

This amounts to a total of 2,580,788 shares or 3.05% of the shares issued by Solvay S.A.

The participation of the group JP Morgan Asset Management Holdings Inc. in Solvay is published in the Investor Relations Section of Solvay's website.

For further information please contact:

Patrick VERELSTMaria ALCON-HIDALGO
Investor RelationsInvestor Relations
T +32 2 264 1540T +33 1 5356 6489

Solvay Investor Relations
Tel : 32/2/509.60.16
Fax : 32/2/509.72.41
www.solvay-investors.com