<SUBMISSION>
<ACCESSION-NUMBER>0001144204-10-025105
<TYPE>3
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20100426
<FILING-DATE>20100507
<DATE-OF-FILING-DATE-CHANGE>20100507
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Cassady Brian F
<CIK>0001426871
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>3
<ACT>34
<FILE-NUMBER>000-02000
<FILM-NUMBER>10810107
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>510 OCEAN DRIVE, SUITE 501
<CITY>MIAMI BEACH
<STATE>FL
<ZIP>33139
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>ENTRX CORP
<CIK>0000013547
<ASSIGNED-SIC>1700
<IRS-NUMBER>952368719
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>800 NICOLLET MALL
<STREET2>SUITE 2690
<CITY>MINNEAPOLIS
<STATE>MN
<ZIP>55402
<PHONE>612 333-0614
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>800 NICOLLET MALL
<STREET2>SUITE 2690
<CITY>MINNEAPOLIS
<STATE>MN
<ZIP>55402
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>METALCLAD CORP
<DATE-CHANGED>19920703
</FORMER-COMPANY>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>BOWER INDUSTRIES INC
<DATE-CHANGED>19870618
</FORMER-COMPANY>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>PHOENIX GEMS INC
<DATE-CHANGED>19730617
</FORMER-COMPANY>
</ISSUER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>v183887_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2010-04-26</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000013547</issuerCik>
        <issuerName>ENTRX CORP</issuerName>
        <issuerTradingSymbol>ENTZ.PK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001426871</rptOwnerCik>
            <rptOwnerName>Cassady Brian F</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>510 OCEAN DRIVE, SUITE 501</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MIAMI BEACH</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33139</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>377700</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>359798</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By BMA Special Investments I LLC</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ Brian F. Cassady</signatureName>
        <signatureDate>2010-04-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
