<SEC-DOCUMENT>0001209191-18-033134.txt : 20180524
<SEC-HEADER>0001209191-18-033134.hdr.sgml : 20180524
<ACCEPTANCE-DATETIME>20180524183034
ACCESSION NUMBER:		0001209191-18-033134
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180523
FILED AS OF DATE:		20180524
DATE AS OF CHANGE:		20180524

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MCCLUNG JAMES A
		CENTRAL INDEX KEY:			0001051331
		STANDARD INDUSTRIAL CLASSIFICATION:	CHEMICALS & ALLIED PRODUCTS [2800]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22333
		FILM NUMBER:		18859112

	MAIL ADDRESS:	
		STREET 1:		200 E RANDOLPH DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60601

ISSUER:		

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

	BUSINESS ADDRESS:	
		STREET 1:		1319 MARQUETTE DRIVE
		CITY:			ROMEOVILLE
		STATE:			IL
		ZIP:			60446
		BUSINESS PHONE:		6303231200

	MAIL ADDRESS:	
		STREET 1:		1319 MARQUETTE DRIVE
		CITY:			ROMEOVILLE
		STATE:			IL
		ZIP:			60446

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NANOPHASE TECHNOLOGIES CORPORATION
		DATE OF NAME CHANGE:	19970305
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
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    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-05-23</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

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        <reportingOwnerId>
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            <rptOwnerName>MCCLUNG JAMES A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1319 MARQUETTE DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ROMEOVILLE</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60446</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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                    <value>30071</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
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                <natureOfOwnership>
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            <expirationDate>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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                <underlyingSecurityShares>
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                <sharesOwnedFollowingTransaction>
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            <ownershipNature>
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                    <value>D</value>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Common Stock (right to purchase)</value>
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            <conversionOrExercisePrice>
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            <exerciseDate>
                <value>2016-02-18</value>
                <footnoteId id="F6"/>
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            <expirationDate>
                <value>2025-02-18</value>
            </expirationDate>
            <underlyingSecurity>
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            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10800</value>
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            <conversionOrExercisePrice>
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            <conversionOrExercisePrice>
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            <exerciseDate>
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            <underlyingSecurity>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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                <underlyingSecurityShares>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Common Stock (right to purchase)</value>
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                <value>0.68</value>
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            <exerciseDate>
                <value>2018-02-21</value>
                <footnoteId id="F5"/>
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            <expirationDate>
                <value>2027-02-21</value>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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                    <value>12000</value>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        </derivativeHolding>
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            <securityTitle>
                <value>Common Stock (right to purchase)</value>
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            <conversionOrExercisePrice>
                <value>0.82</value>
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            <transactionDate>
                <value>2018-05-23</value>
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            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>12000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.82</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <value>2019-05-23</value>
                <footnoteId id="F1"/>
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            <expirationDate>
                <value>2028-05-23</value>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                <underlyingSecurityShares>
                    <value>12000</value>
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                <sharesOwnedFollowingTransaction>
                    <value>12000</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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    </derivativeTable>

    <footnotes>
        <footnote id="F1">Subject to certain rights and restrictions, beginning on this date, options vest in three equal annual installments.</footnote>
        <footnote id="F2">Each share of deferred common stock represents a right to receive one share of common stock.</footnote>
        <footnote id="F3">The deferred common stock becomes payable upon the reporting person's termination of service as a director of the Company.</footnote>
        <footnote id="F4">Pursuant to such plan, the reporting person elected to defer receipt of such shares and receive a cumulative total of 21,596 shares of deferred common stock which will all be accounted for under the Company's Non-Employee Director Deferred Compensation Plan.</footnote>
        <footnote id="F5">Beginning on this date, and subject to certain restrictions, the stock options vest in three equal annual installments.</footnote>
        <footnote id="F6">Beginning on this date, and subject to certain restrictions, options vest in three equal annual installments.</footnote>
        <footnote id="F7">The stock appreciation rights payable upon the reporting person's termination of service as a director of the Company were terminated, with stock options issued at identical exercise prices to the conversion prices of the respective stock appreciation rights. 2,250 were issued with an exercise price of $0.90, 2,250 were issued with an exercise price of $1.05, 2,250 were issued with an exercise price of $1.18, 2,250 were issued with an exercise price of $0.84, 2,250 were issued with an exercise price of $1.85, 2,250 were issued with an exercise price of $1.10, and 2,250 were issued with an exercise price of $0.99.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>By Jess Jankowski under UPA for James A. McClung</signatureName>
        <signatureDate>2018-05-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
