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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000933430-08-000020.txt : 20080627
<SEC-HEADER>0000933430-08-000020.hdr.sgml : 20080627
<ACCEPTANCE-DATETIME>20080627171016
ACCESSION NUMBER:		0000933430-08-000020
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080625
FILED AS OF DATE:		20080627
DATE AS OF CHANGE:		20080627

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WHITMORE BRADFORD T
		CENTRAL INDEX KEY:			0000933430
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22333
		FILM NUMBER:		08923446

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		8477331230

	MAIL ADDRESS:	
		STREET 1:		1560 SHERMAN AVE
		STREET 2:		SUITE 900
		CITY:			EVANSTON
		STATE:			IL
		ZIP:			60201

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NANOPHASE TECHNOLOGIES CORPORATION
		CENTRAL INDEX KEY:			0000883107
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS PRIMARY METAL PRODUCTS [3390]
		IRS NUMBER:				363687863
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		453 COMMERCE ST
		CITY:			BURR RIDGE
		STATE:			IL
		ZIP:			60521
		BUSINESS PHONE:		6303231200

	MAIL ADDRESS:	
		STREET 1:		453 COMMERCE STREET
		CITY:			BURR RIDGE
		STATE:			IL
		ZIP:			60521

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GRACE BROTHERS LTD
		CENTRAL INDEX KEY:			0000931217
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22333
		FILM NUMBER:		08923444

	BUSINESS ADDRESS:	
		STREET 1:		1560 SHERMAN AVE SUITE 900
		CITY:			EVANSTON
		STATE:			IL
		ZIP:			60201
		BUSINESS PHONE:		8477331230

	MAIL ADDRESS:	
		STREET 1:		1560 SHERMAN AVE SUITE 900
		CITY:			EVANSTON
		STATE:			IL
		ZIP:			60201

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SPURGEON CORP
		CENTRAL INDEX KEY:			0001061060
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22333
		FILM NUMBER:		08923445

	BUSINESS ADDRESS:	
		STREET 1:		290 S COUNTY FARM RD
		STREET 2:		THIRD FL
		CITY:			WHEATON
		STATE:			IL
		ZIP:			60187
		BUSINESS PHONE:		6305887200

	MAIL ADDRESS:	
		STREET 1:		290 S COUNTY FARM RD
		STREET 2:		THIRD FL
		CITY:			WHEATON
		STATE:			IL
		ZIP:			60187
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-06-25</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000883107</issuerCik>
        <issuerName>NANOPHASE TECHNOLOGIES CORPORATION</issuerName>
        <issuerTradingSymbol>NANX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000933430</rptOwnerCik>
            <rptOwnerName>WHITMORE BRADFORD T</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1560 SHERMAN AVE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 900</rptOwnerStreet2>
            <rptOwnerCity>EVANSTON</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60201</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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    </reportingOwner>

    <reportingOwner>
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            <rptOwnerName>SPURGEON CORP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>290 S COUNTY FARM RD</rptOwnerStreet1>
            <rptOwnerStreet2>THIRD FL</rptOwnerStreet2>
            <rptOwnerCity>WHEATON</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60187</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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    <reportingOwner>
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            <rptOwnerName>GRACE BROTHERS LTD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1560 SHERMAN AVE SUITE 900</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>EVANSTON</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60201</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>0</isOfficer>
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    </reportingOwner>

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                <value>Common Stock</value>
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            <transactionDate>
                <value>2008-06-25</value>
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                <value>Common Stock</value>
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            <transactionTimeliness>
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            <transactionAmounts>
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                    <value>599</value>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-06-25</value>
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                <transactionCode>P</transactionCode>
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                <transactionShares>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
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            <transactionDate>
                <value>2008-06-25</value>
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            <transactionCoding>
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                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3300</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.04</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
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                    <footnoteId id="F2"/>
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            </postTransactionAmounts>
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                <directOrIndirectOwnership>
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                <value>Common Stock</value>
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            <transactionTimeliness>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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                <value></value>
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        <nonDerivativeTransaction>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
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                    <value>1900</value>
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                    <value>A</value>
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        <nonDerivativeTransaction>
            <securityTitle>
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            <transactionDate>
                <value>2008-06-25</value>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>700</value>
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                <transactionPricePerShare>
                    <value>3.16</value>
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                <transactionAcquiredDisposedCode>
                    <value>A</value>
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                <directOrIndirectOwnership>
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            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
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            <transactionDate>
                <value>2008-06-25</value>
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            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1200</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.17</value>
                </transactionPricePerShare>
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    <footnotes>
        <footnote id="F1">As General Partner of Grace Brothers, Ltd. which owns 4,004,639 shares (after purchases through June 27, 2008) and as General Partner of Grace Investments, Ltd. which owns 300,000 shares, Bradford T. Whitmore is an indirect beneficial owner.  As General Partner of Grace Brothers, Ltd. and as General Partner of Grace Investments, Ltd., Spurgeon Corporation is an indirect beneficial owner.</footnote>
        <footnote id="F2">Bradford T. Whitmore directly owns 272,812 shares.</footnote>
        <footnote id="F3">A continuing Form 4 will be filed to reflect the remaining transactions.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Bradford T. Whitmore</signatureName>
        <signatureDate>2008-06-27</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Jerald A. Trannel, Vice President</signatureName>
        <signatureDate>2008-06-27</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Bradford T. Whitmore, General Partner</signatureName>
        <signatureDate>2008-06-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----