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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 4+mOO1fg9KLMUTxTsA5CDA==

<SEC-DOCUMENT>0001243902-05-000189.txt : 20050902
<SEC-HEADER>0001243902-05-000189.hdr.sgml : 20050902
<ACCEPTANCE-DATETIME>20050902114305
ACCESSION NUMBER:		0001243902-05-000189
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050901
FILED AS OF DATE:		20050902
DATE AS OF CHANGE:		20050902

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:			MOOSE SANDRA O
		CENTRAL INDEX KEY:			0001192786

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03507
		FILM NUMBER:		051066683

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		6179731201

	MAIL ADDRESS:	
		STREET 1:		ONE EXCHANGE PLZ
		STREET 2:		53 STATE ST. 31ST FL
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109
</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>2005-09-01</periodOfReport>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001192786</rptOwnerCik>
            <rptOwnerName>MOOSE SANDRA O</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>THE BOSTON CONSULTING GROUP, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>ONE EXCHANGE PLACE - 31ST FLOOR</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02109</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-09-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>106.5788</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>43.08</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>15939.0526</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Deferred stock shares were granted as dividends on deferred stock shares under the 1997 Non-Employee Directors' Stock Plan and the 2005 Non-Employee Directors' Stock Plan, subject to shareholder approval.  Each deferred stock share will be converted to one share of Rohm and Haas Company common stock after the reporting person leaves the Board of Directors.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Cathlene M. Britt on behalf of Sandra O. Moose</signatureName>
        <signatureDate>2005-09-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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