<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-06-04</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001028215</issuerCik>
        <issuerName>KMG CHEMICALS INC</issuerName>
        <issuerTradingSymbol>KMGB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000948904</rptOwnerCik>
            <rptOwnerName>GENDELL JEFFREY L ET AL</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>55 RAILROAD AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>GREENWICH</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06830</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Former 10% Owner</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $.01</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1030035</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Following the Issuer's issuance of additional shares of Common Stock, the Reporting Person beneficially owned 9.73% of the
 outstanding shares of Common Stock based on the total capitalization as of June 4, 2007, as reflected in the Issuer's Form
 10-Q, filed on June 5, 2007.</footnote>
        <footnote id="F2">The Reporting Person is the managing member of Tontine Capital Management, L.L.C. (&quot;TCM&quot;), a Delaware limited liability
 company, the general partner of Tontine Capital Partners, L.P. (&quot;TCP&quot;), a Delaware limited partnership.</footnote>
        <footnote id="F3">The Reporting Person directly owns 0 shares of the Common Stock.  TCM directly owns 0 shares of Common Stock.  TCP directly
 owns 1,030,035 shares of Common Stock.  All of the foregoing shares of Common Stock may be deemed to be beneficially owned
 by the Reporting Person.  The Reporting Person disclaims beneficial ownership of the Issuer's securities reported herein for
 purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities
 directly owned by the Reporting Person or representing the Reporting Person's pro rata interest in, and interest in the
 profits of, TCM and TCP.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Jeffrey L. Gendell</signatureName>
        <signatureDate>2007-07-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
