<?xml version="1.0" encoding="UTF-8"?>
<!--REG30 V1.0 (16-10-2025)-->
<xbrli:xbrl xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2025-08-31/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/Regulation_30_Restructuring/2025-08-31/in-capmkt/in-capmkt-ent" xmlns:in-capmkt-roles="http://www.sebi.gov.in/xbrl/Regulation_30_Restructuring/2025-08-31/in-capmkt-roles" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" 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.xbrl.org/2003/XLink"><link:schemaRef xlink:type="simple" xlink:href="in-capmkt-ent-2025-08-31.xsd"/><xbrli:context id="OneI"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/NSESymbol">TIRUMALCHM</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-31</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="OneD"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/NSESymbol">TIRUMALCHM</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-08-31</xbrli:startDate><xbrli:endDate>2026-08-31</xbrli:endDate></xbrli:period></xbrli:context><in-capmkt:ScripCode contextRef="OneI">500412</in-capmkt:ScripCode><in-capmkt:NameOfTheCompany contextRef="OneI">THIRUMALAI CHEMICALS LIMITED</in-capmkt:NameOfTheCompany><in-capmkt:NSESymbol contextRef="OneI">TIRUMALCHM</in-capmkt:NSESymbol><in-capmkt:MSEISymbol contextRef="OneI">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="OneI">INE338A01024</in-capmkt:ISIN><in-capmkt:TypeOfAnnouncementPertainingToRegulation30Restructuring contextRef="OneD">New</in-capmkt:TypeOfAnnouncementPertainingToRegulation30Restructuring><in-capmkt:TypeOfEventOfAnnouncementPertainingToRegulation30Restructuring contextRef="OneD">Other Restructuring</in-capmkt:TypeOfEventOfAnnouncementPertainingToRegulation30Restructuring><in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfBoardMeeting contextRef="OneD">true</in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfBoardMeeting><in-capmkt:DateOfBoardMeeting contextRef="OneI">2026-08-30</in-capmkt:DateOfBoardMeeting><in-capmkt:EndTimeOfBoardMeeting contextRef="OneD">21:30:00</in-capmkt:EndTimeOfBoardMeeting><in-capmkt:DateOfReport contextRef="OneI">2026-08-31</in-capmkt:DateOfReport><in-capmkt:DetailsAndReasonsForOtherRestructuring contextRef="OneI">Sale of equity shares  held in Ultramarine &amp; Pigments Limited through permitted mode under SEBI Regulation/Circulars/Guidelines</in-capmkt:DetailsAndReasonsForOtherRestructuring><in-capmkt:QuantitativeEffectOfOtherRestructuring contextRef="OneI">Sale of upto 14,60,000 number of equity shares</in-capmkt:QuantitativeEffectOfOtherRestructuring><in-capmkt:QualitativeEffectOfOtherRestructuring contextRef="OneI">NA</in-capmkt:QualitativeEffectOfOtherRestructuring><in-capmkt:WhetherThePromoterOrPromoterGroupOrGroupCompaniesIncludingAssociateOrHoldingOrSubsidiaryOrDirectorOrKMPOrSMPAndItsRelativesHaveAnyInterestInTheEntityBeingRestructuring contextRef="OneD">false</in-capmkt:WhetherThePromoterOrPromoterGroupOrGroupCompaniesIncludingAssociateOrHoldingOrSubsidiaryOrDirectorOrKMPOrSMPAndItsRelativesHaveAnyInterestInTheEntityBeingRestructuring><in-capmkt:BriefDetailsOfChangeInShareholdingPatternOfAllEntitiesForOtherRestructuring contextRef="OneI">Company holding in Ultramarine &amp; Pigments Limited changed from 41,98,837 number of equity shares (14.38%) to 27,38,837 number of equity shares (9.38%)</in-capmkt:BriefDetailsOfChangeInShareholdingPatternOfAllEntitiesForOtherRestructuring></xbrli:xbrl>