FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington D.C. 20549

REPORT OF FOREIGN ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 OF

THE SECURITIES EXCHANGE ACT OF 1934

For the month of June 2011

Commission File Number: 001-34368

CHEMSPEC INTERNATIONAL LIMITED

No. 200, Wu Wei Road

Shanghai 200331

People’s Republic of China

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F x Form 40-F ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):

Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes ¨ No x

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- N/A

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Exhibit 99.1 – Press Release

SIGNATURE

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.


CHEMSPEC INTERNATIONAL LIMITED

By:		/s/ Jianhua Yang
Name:		Jianhua Yang
Title:		Chief Executive Officer

Date: June 21, 2011

Exhibit 99.1

Chemspec International Limited Files 2010 Annual Report on Form 20-F

SHANGHAI, June 20, 2011 — Chemspec International Limited (NYSE: CPC; “Chemspec” or the “Company”), a leading China-based contract manufacturer of highly-engineered specialty chemicals, today announced that it filed its annual report on Form 20-F for the year ended December 31, 2010 with the Securities and Exchange Commission on June 20, 2011. The annual report can be accessed on Chemspec’s website at http://www.chemspec.com.cn under the investor relations section. The annual report is also available on the website of the U.S. Securities and Exchange Commission at http://www.sec.gov.

About Chemspec

Chemspec is a leading China-based contract manufacturer of highly engineered specialty chemicals, especially, the fluorinated specialty chemicals. In manufacturing specialty chemicals, Chemspec also provides process design and process development services, which enable efficient and rapid production of specialty chemicals that are incorporated into the products of Chemspec’s end users. Chemspec’s customers and end users include electronics, pharmaceutical and agrochemical companies. For more information, please visit www.chemspec.com.cn.

Safe Harbor Statements

This announcement contains forward-looking statements. These statements constitute “forward-looking” statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and as defined in the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements can be identified by terminology such as “will,” “expects,” “anticipates,” “future,” “intends,” “plans,” “believes,” “estimates” and similar statements. Such statements involve certain risks and uncertainties that could cause actual results to differ materially from those in the forward-looking statements. Further information regarding these and other risks is included in Chemspec’s filings with the U.S. Securities and Exchange Commission, as amended from time to time. Chemspec does not undertake any obligation to update any forward-looking statement, except as required under applicable law.

For further information, please contact:

Chemspec International Ltd.

In Shanghai

Tel: +86-21-63638108

Email: ir@chemspec.com.cn

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Chemspec International Ltd 6-K