(Commission File No. 1-14862 )

(A free translation of the original in Portuguese)

Quattor Participações S.A.

Appraisal Report on the Book Value of Shares

at March 31, 2010

Appraisal Report on the Book Value

of Shares in the Capital of

Quattor Participações S.A.

at March 31, 2010

Quattor Participações S.A.

Rua Joaquim Floriano, 960

São Paulo – SP

1             PricewaterhouseCoopers Auditores Independentes, a professional partnership established in the Capital of the State of São Paulo at Avenida Francisco Matarazzo, 1400, 9^th, 10^th, 13^th, 14^th, 15^th, 16^th and 17^th floors, Torre Torino, Água Branca and branch in the Capital of the State of Rio de Janeiro, at Rua da Candelária, 54, 11^th, 14^th and 15^th floors,  Centro, enrolled with the Finance Ministry National Corporate Taxpayers Registry under no. 61.562.112/0002-01, originally registered with the Regional Accounting Board of the State of São Paulo  under no. 2SP000160/O-5, and secondarily with the Regional Accounting Board of the State of Rio de Janeiro under no. 2SP000160/O5 “F” RJ, having its Social Contract registered at the 4^th Registry of Documents of São Paulo – SP on September 16, 1956 and subsequent amendments registered with the 2^nd Registry of Documents and Civil Deeds of Corporations of São Paulo – SP, the most recent one dated February 10, 2010 having been registered at the same 2^nd Registry of Documents and Civil Deed of Corporations of São Paulo – SP under microfilm no. 103.588, dated March 29, 2010, herein represented by its undersigned partner, Mr. Carlos Alberto de Sousa, Brazilian citizen, married, accountant, bearer of Identity Card RG no. 05461304-7 IFP/RJ, enrolled with the Finance Ministry National Individual Taxpayers Registry under no. 724.687.697-91 and with the Regional Accounting Board of the State of Rio de Janeiro under no. 1RJ056561/O-0, having offices at the same address as the represented company, appointed as expert by Quattor Participações S.A. to perform the valuation of the book value of shares of the capital of the Company at March 31, 2010, in accordance with accounting practices adopted in Brazil, presents the results of its work.

2           The valuation of the book value of the shares of the capital of Quattor Participações S.A. was carried out in connection with the audit of its balance Sheet as of March 31, 2010, that was prepared by Quattor Participações S.A. management, as part of the merger process of Quattor Participações S.A. shares into Braskem S.A.

3           We conducted our audit in accordance with approved Brazilian auditing standards, which require that we perform the audit to obtain reasonable assurance about whether the financial statements are fairly presented in all material respects. Accordingly, our work included, among other procedures: (a) planning our audit taking into consideration the significance of balances, the volume of transactions and the accounting and internal control systems of the Company, (b) examining, on a test basis, evidence and records supporting the amounts and disclosures in the financial statements, and (c) assessing the accounting practices used and significant estimates made by management, as well as evaluating the overall financial statement presentation.

4            Based on our work, we concluded that the value of assets and rights, net of obligations, that comprise the net book value of Quattor Participações S.A., as per the balance sheet as of March 31, 2010, shown in the Attachment, is four hundred and ninety-eight million, three hundred and ninety thousand, nine hundred and thirty-seven reais and forty-two cents (R$ 498,390,937.42) and is recorded in the accounting books in accordance with accounting practices adopted in Brazil. Therefore, considering that Quattor Participações S.A. paid-in capital is divided into a total of two hundred and thirty-eight million, six hundred and fifty-tree thousand, seven hundred and eighteen (238,653,718) nominative common shares, it follows that the book value of each share at March 31, 2010 is two reais, eight cents and fraction (R$ 2.0883).

Rio de Janeiro, May 25, 2010

/s/                                                                               /s/

PricewaterhouseCoopers                                         Carlos Alberto de Sousa

Auditores Independentes                                          Contador 1RJ056561/O-0

CRC 2SP000160/O-5 “F” RJ

Attachment to the Appraisal Report on the Book Value of Shares

of the Capital of Quattor Participações S.A.

Summary Balance Sheet of Quattor Participações S.A.

at March 31, 2010

In reais

*    *    *

This attachment is an integral and inseparable part of the appraisal report on the net book value issued by PricewaterhouseCoopers, dated May 25, 2010.

SIGNATURES

        Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.