<?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">KOTHARIPET</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-10-05</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="OneD"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/NSESymbol">KOTHARIPET</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-10-05</xbrli:startDate><xbrli:endDate>2026-10-05</xbrli:endDate></xbrli:period></xbrli:context><in-capmkt:ScripCode contextRef="OneI">000000</in-capmkt:ScripCode><in-capmkt:NameOfTheCompany contextRef="OneI">KOTHARI PETROCHEMICALS LIMITED</in-capmkt:NameOfTheCompany><in-capmkt:NSESymbol contextRef="OneI">KOTHARIPET</in-capmkt:NSESymbol><in-capmkt:MSEISymbol contextRef="OneI">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="OneI">INE720A01015</in-capmkt:ISIN><in-capmkt:TypeOfAnnouncementPertainingToRegulation30Restructuring contextRef="OneD">Update</in-capmkt:TypeOfAnnouncementPertainingToRegulation30Restructuring><in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfBoardMeeting contextRef="OneD">false</in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfBoardMeeting><in-capmkt:DateOfOccurrenceOfEvent contextRef="OneI">2026-10-05</in-capmkt:DateOfOccurrenceOfEvent><in-capmkt:TimeOfOccurrenceOfEvent contextRef="OneD">10:13:00</in-capmkt:TimeOfOccurrenceOfEvent><in-capmkt:DateOfInitialAnnouncement contextRef="OneI">2026-05-19</in-capmkt:DateOfInitialAnnouncement><in-capmkt:DateOfLatestAnnouncement contextRef="OneI">2026-08-19</in-capmkt:DateOfLatestAnnouncement><in-capmkt:DateOfReport contextRef="OneI">2026-10-05</in-capmkt:DateOfReport><in-capmkt:UpdateForTheEvent contextRef="OneD">Amalgamation/ Merger</in-capmkt:UpdateForTheEvent><in-capmkt:BriefDetailsOfInitialAnnouncement contextRef="OneI">Approval of Board of Directors on May 19, 2026 for Scheme of Amalgamation of Kothari Sugars and Chemicals Limited with and into Kothari Petrochemicals Limited and their respective shareholders and creditors, subject to regulatory approvals.</in-capmkt:BriefDetailsOfInitialAnnouncement><in-capmkt:ReasonForUpdate contextRef="OneD">Others</in-capmkt:ReasonForUpdate><in-capmkt:OtherUpdates contextRef="OneI">Order of the Hon’ble NCLT, Chennai, to convene the meeting of equity shareholders on November 13, 2026 at 02:30 PM and unsecured creditors on November 13, 2026 at 04:30 PM through Video-conferencing / Other Audio Visual Means</in-capmkt:OtherUpdates></xbrli:xbrl>