-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 VwtA4uAqAxkSd9K8jV0zWEfGc0lGfUSP/Mhfabe9rxnBASTCKtsUTescmT+d0vlr
 5aU6TtfihJXd11pDNiFNoA==

<SEC-DOCUMENT>0001243902-04-000232.txt : 20041206
<SEC-HEADER>0001243902-04-000232.hdr.sgml : 20041206
<ACCEPTANCE-DATETIME>20041206142856
ACCESSION NUMBER:		0001243902-04-000232
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20041203
FILED AS OF DATE:		20041206
DATE AS OF CHANGE:		20041206

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ROHM & HAAS CO
		CENTRAL INDEX KEY:			0000084792
		STANDARD INDUSTRIAL CLASSIFICATION:	PLASTICS, MATERIALS, SYNTH RESINS & NONVULCAN ELASTOMERS [2821]
		IRS NUMBER:				231028370
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		100 INDEPENDENCE MALL WEST
		CITY:			PHILADELPHIA
		STATE:			PA
		ZIP:			19106
		BUSINESS PHONE:		2155923000

	MAIL ADDRESS:	
		STREET 1:		100 INDEPENDENCE MALL WEST
		CITY:			PHILADELPHIA
		STATE:			PA
		ZIP:			19106

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CROISETIERE JACQUES M
		CENTRAL INDEX KEY:			0001037839

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03507
		FILM NUMBER:		041186003

	BUSINESS ADDRESS:	
		STREET 1:		C/O MORTON INTERNATIONAL INC
		STREET 2:		100 NORTH RIVERSIDE PLZ
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

	MAIL ADDRESS:	
		STREET 1:		C/O MORTON INTERNATIONAL INC
		STREET 2:		100 N RIVERSIDE PLZ
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-12-03</periodOfReport>

    <issuer>
        <issuerCik>0000084792</issuerCik>
        <issuerName>ROHM &amp; HAAS CO</issuerName>
        <issuerTradingSymbol>ROH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001037839</rptOwnerCik>
            <rptOwnerName>CROISETIERE JACQUES M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ROHM AND HAAS COMPANY</rptOwnerStreet1>
            <rptOwnerStreet2>100 INDEPENDENCE MALL WEST</rptOwnerStreet2>
            <rptOwnerCity>PHILADELPHIA</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19106</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President &amp; CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-12-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>11.0632</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>44.43</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>49899.0052</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>702</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Savings Plan</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Includes share units held by the reporting person in the Rohm and Haas Non-Qualified Savings Plan.  The number of share units held in this plan are valued based on the closing price on December 3, 2004.</footnote>
        <footnote id="F2">Deemed held at December 31, 2003 for the reporting person by the Rohm and Haas Savings Plan.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Cathlene M. Britt on behalf of Jacques M. Croisetiere</signatureName>
        <signatureDate>2004-12-06</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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