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<xbrli:xbrl xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2025-11-30/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/Changes_In_Management/2025-11-30/in-capmkt/in-capmkt-ent" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:in-capmkt-types="http://www.sebi.gov.in/xbrl/2025-11-30/in-capmkt-types" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xl="http://www.w3.org/1999/xlink"><link:schemaRef xlink:type="simple" xlink:href="in-capmkt-ent-2025-11-30.xsd"/><xbrli:context id="MainD"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">506590</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-11-09</xbrli:startDate><xbrli:endDate>2026-11-09</xbrli:endDate></xbrli:period></xbrli:context><xbrli:context id="MainI"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">506590</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-11-09</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="I_ChangeInManagement1"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">506590</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-11-09</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain1</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="D_ChangeInManagement1"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">506590</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-11-09</xbrli:startDate><xbrli:endDate>2026-11-09</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain1</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:unit id="pure"><xbrli:measure>xbrli:pure</xbrli:measure></xbrli:unit><in-capmkt:NSESymbol contextRef="MainI">PCBL</in-capmkt:NSESymbol><in-capmkt:NameOfTheCompany contextRef="MainI">PCBL Chemical Limited</in-capmkt:NameOfTheCompany><in-capmkt:ScripCode contextRef="MainI">506590</in-capmkt:ScripCode><in-capmkt:MSEISymbol contextRef="MainI">Notlisted</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="MainI">INE602A01031</in-capmkt:ISIN><in-capmkt:WhetherDisclosureFiledForListedEntity contextRef="MainD">true</in-capmkt:WhetherDisclosureFiledForListedEntity><in-capmkt:RelationshipWithTheListedEntity contextRef="MainD">Listed Entity (self)</in-capmkt:RelationshipWithTheListedEntity><in-capmkt:WhetherEventOrInformationIsAnOutcomeOfBoardMeeting contextRef="MainD">false</in-capmkt:WhetherEventOrInformationIsAnOutcomeOfBoardMeeting><in-capmkt:DateOfOccurrenceOfEventOrInformation contextRef="MainD">2026-11-09</in-capmkt:DateOfOccurrenceOfEventOrInformation><in-capmkt:TimeOfOccurrenceOfEventOrInformation contextRef="MainD">10:00:00</in-capmkt:TimeOfOccurrenceOfEventOrInformation><in-capmkt:NumberOfPersonsOrEntitiesForWhomChangeIsBeingReported contextRef="MainI" unitRef="pure" decimals="0">1</in-capmkt:NumberOfPersonsOrEntitiesForWhomChangeIsBeingReported><in-capmkt:DateOfReport contextRef="MainI">2026-11-09</in-capmkt:DateOfReport><in-capmkt:TypeOfChange contextRef="D_ChangeInManagement1">Appointment</in-capmkt:TypeOfChange><in-capmkt:CategoryForChange contextRef="D_ChangeInManagement1">Senior Management Personnel</in-capmkt:CategoryForChange><in-capmkt:DesignationOfDesignatedPerson contextRef="D_ChangeInManagement1">Executive Director &amp; Chief – International Markets (Rubber Blacks)</in-capmkt:DesignationOfDesignatedPerson><in-capmkt:SalutationOfDesignatedPerson contextRef="D_ChangeInManagement1">Mr.</in-capmkt:SalutationOfDesignatedPerson><in-capmkt:NameOfDesignatedPerson contextRef="I_ChangeInManagement1">Rituraj Singh Kalra</in-capmkt:NameOfDesignatedPerson><in-capmkt:EffectiveDateOfReasonOfChange contextRef="I_ChangeInManagement1">2026-11-09</in-capmkt:EffectiveDateOfReasonOfChange><in-capmkt:BriefProfile contextRef="D_ChangeInManagement1">Mr. Rituraj Singh Kalra is a seasoned business leader with around 30 years of experience in international sales, marketing, and business strategy. Appointed as Executive Director &amp; Chief – International Markets (Rubber Blacks), he has held leadership roles with leading global organizations, including Bekaert, GKN Driveline, and MAHLE. Most recently, he served as Senior Vice President - Global Sales, Marketing &amp; Strategy at Bekaert, Belgium.   

A Mechanical Engineer from University of Leeds, UK, MBA from Warwick Business School, UK, he brings a strong blend of technical expertise and commercial leadership to drive global business growth and market expansion.</in-capmkt:BriefProfile></xbrli:xbrl>
