HOUSTON, TX - December 4, 2006 - KMG Chemicals, Inc. (NASDAQ: KMGB), a global provider of specialty chemicals in carefully focused markets, today announced that it will issue its financial results for the first quarter ended October 31, 2006 on Wednesday, December 6, 2006 before the stock market opens.

About KMG

KMG Chemicals, Inc., through its subsidiaries, produces and distributes specialty chemicals to carefully focused markets. The Company grows by acquiring and managing stable chemical product lines and businesses with established production processes. Its wholly owned subsidiary, KMG Bernuth, Inc. is a global provider of products to the wood treating and agricultural industries.

The information in this news release includes certain forward-looking statements that are based upon assumptions that in the future may prove not to have been accurate and are subject to significant risks and uncertainties. Although the Company believes that the expectations reflected in its forward-looking statements are reasonable, it can give no assurance that such expectations or any of its forward-looking statements will prove to be correct.

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Contacts:

John V. Sobchak
Chief Financial Officer
KMG Chemicals, Inc.
713-988-9252 (x.114)
jsobchak@kmgchemicals.com

Investor Relations Counsel:
The Equity Group Inc.
Loren G. Mortman
212-836-9604
LMortman@equityny.com