<?xml version="1.0" encoding="UTF-8" standalone="no"?><xbrli:xbrl xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:in-capmkt="https://www.sebi.gov.in/xbrl/2022-12-31/in-capmkt" xmlns:in-capmkt-ent="https://www.sebi.gov.in/xbrl/Regulation_30_Restructuring/2022-12-31/in-capmkt/in-capmkt-ent" xmlns:in-capmkt-roles="https://www.sebi.gov.in/xbrl/Regulation_30_Restructuring/2022-12-31/in-capmkt-roles" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:xlink="http://www.w3.org/1999/xlink"><link:schemaRef xlink:href="in-capmkt-ent-2022-12-31.xsd" xlink:type="simple"/><xbrli:context id="OneI"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ISIN">543318</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-04-08</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="OneD"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ISIN">543318</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-04-08</xbrli:startDate><xbrli:endDate>2026-04-08</xbrli:endDate></xbrli:period></xbrli:context><xbrli:unit id="INR"><xbrli:measure>iso4217:INR</xbrli:measure></xbrli:unit><xbrli:unit id="pure"><xbrli:measure>xbrli:pure</xbrli:measure></xbrli:unit><in-capmkt:NameOfTheCompany contextRef="OneI">Clean Science and Technology Limited</in-capmkt:NameOfTheCompany><in-capmkt:NSESymbol contextRef="OneI">CLEAN</in-capmkt:NSESymbol><in-capmkt:TypeOfAnnouncementPertainingToRegulation30Restructuring contextRef="OneD">New</in-capmkt:TypeOfAnnouncementPertainingToRegulation30Restructuring><in-capmkt:EventOfAnnouncementPertainingToRegulation30Restructuring contextRef="OneD">Acquisition (including agreement to acquire)</in-capmkt:EventOfAnnouncementPertainingToRegulation30Restructuring><in-capmkt:DateOfEventOfAnnouncementPertainingToRegulation30Restructuring contextRef="OneI">2026-04-08</in-capmkt:DateOfEventOfAnnouncementPertainingToRegulation30Restructuring><in-capmkt:RemarksForWebsiteDissemination contextRef="OneI">(a) In the row "Whether the said RPT is Material"  we have selected “No”, and also 
(b) In the row "Whether the same is done at arm's length" we have selected "No",
This is because If we select “Yes”  the date of approval of shareholder /date of Special Resolution is required to be mentioned. However, pursuant to Regulation 23(5)(b) of the SEBI (Listing Obligation and Disclosure Requirements) Regulations, 2015 the said shareholders approvals is not required if the transaction is with a Wholly Owned Subsidiary.
Please note that Clean Fino-Chem Limited is a Wholly owned subsidiary of Clean Science and Technology Limited hence shareholders approval is not required and the transaction is at arms length.
(c) In the column "History of Last 3 years turnover",  actual Turnover  of FY 2024-25 and 2023-24  (i.e. 1st and 2nd Previous Year respectively) are 46.77 crores and 1.92 Crores, after entering the same error is occuring hence we have mentioned the turnover as "47" and "2" instead of  "46.77" and "1.92" respectively.</in-capmkt:RemarksForWebsiteDissemination><in-capmkt:DateOfReport contextRef="OneI">2026-04-08</in-capmkt:DateOfReport><in-capmkt:NameOfAcquirer contextRef="OneI">CLEAN SCIENCE AND TECHNOLOGY LIMITED</in-capmkt:NameOfAcquirer><in-capmkt:RelationshipOfAcquirerWithTheListedEntity contextRef="OneD">Listed Entity (self)</in-capmkt:RelationshipOfAcquirerWithTheListedEntity><in-capmkt:NameOfTheTargetEntity contextRef="OneI">CLEAN FINO-CHEM LIMITED</in-capmkt:NameOfTheTargetEntity><in-capmkt:TurnoverOfTargetEntity contextRef="OneD" decimals="-5" unitRef="INR">467700000</in-capmkt:TurnoverOfTargetEntity><in-capmkt:ProfitAfterTaxOfTargetEntity contextRef="OneD" decimals="-5" unitRef="INR">-279200000</in-capmkt:ProfitAfterTaxOfTargetEntity><in-capmkt:NetWorthOfTargetEntity contextRef="OneD" decimals="-5" unitRef="INR">5104200000</in-capmkt:NetWorthOfTargetEntity><in-capmkt:WhetherTheAcquisitionWouldFallWithinRelatedPartyTransactions contextRef="OneD">true</in-capmkt:WhetherTheAcquisitionWouldFallWithinRelatedPartyTransactions><in-capmkt:DateOfBoardMeetingInWhichRPTApprovalTakenForAcquisitionEvent contextRef="OneI">2026-01-31</in-capmkt:DateOfBoardMeetingInWhichRPTApprovalTakenForAcquisitionEvent><in-capmkt:DateOfAuditCommitteeMeetingInWhichRPTApprovalTakenForAcquisitionEvent contextRef="OneI">2026-01-31</in-capmkt:DateOfAuditCommitteeMeetingInWhichRPTApprovalTakenForAcquisitionEvent><in-capmkt:WhetherAcquisitionEventRPTIsMaterial contextRef="OneD">false</in-capmkt:WhetherAcquisitionEventRPTIsMaterial><in-capmkt:WhetherThePromoterOrPromoterGroupOrGroupOrAssociateOrHoldingOrSubsidiaryCompaniesOrDirectorAndKMPAndItsRelativesHaveAnyInterestInTheEntityBeingAcquired contextRef="OneD">false</in-capmkt:WhetherThePromoterOrPromoterGroupOrGroupOrAssociateOrHoldingOrSubsidiaryCompaniesOrDirectorAndKMPAndItsRelativesHaveAnyInterestInTheEntityBeingAcquired><in-capmkt:WhetherAcquisitionIsDoneAtArmsLength contextRef="OneD">false</in-capmkt:WhetherAcquisitionIsDoneAtArmsLength><in-capmkt:IndustryToWhichTheEntityBeingAcquiredBelongs contextRef="OneI">Speciality Chemicals</in-capmkt:IndustryToWhichTheEntityBeingAcquiredBelongs><in-capmkt:ObjectsAndEffectsOfAcquisitionIncludingButNotLimitedToDisclosureOfReasonsForAcquisitionOfTargetEntityIfItsBusinessIsOutsideTheMainLineOfBusinessOfTheListedEntity contextRef="OneI">The Additional Capital will be primarily used for funding its projects</in-capmkt:ObjectsAndEffectsOfAcquisitionIncludingButNotLimitedToDisclosureOfReasonsForAcquisitionOfTargetEntityIfItsBusinessIsOutsideTheMainLineOfBusinessOfTheListedEntity><in-capmkt:WhetherAnyGovernmentalOrRegulatoryApprovalsRequiredForTheAcquisition contextRef="OneD">NA</in-capmkt:WhetherAnyGovernmentalOrRegulatoryApprovalsRequiredForTheAcquisition><in-capmkt:WhetherTheAcquisitionTransactionWillBeInTranches contextRef="OneD">false</in-capmkt:WhetherTheAcquisitionTransactionWillBeInTranches><in-capmkt:IndicativeTimePeriodForCompletionOfTheAcquisition contextRef="OneI">Not applicable</in-capmkt:IndicativeTimePeriodForCompletionOfTheAcquisition><in-capmkt:NatureOfConsiderationForAcquisitionEvent contextRef="OneD">Cash</in-capmkt:NatureOfConsiderationForAcquisitionEvent><in-capmkt:CostOfAcquisitionOrThePriceAtWhichTheSharesAreAcquired contextRef="OneD" decimals="-7" unitRef="INR">500000000</in-capmkt:CostOfAcquisitionOrThePriceAtWhichTheSharesAreAcquired><in-capmkt:ExistingPercentageOfShareholdingHeldByAcquirer contextRef="OneI" decimals="INF" unitRef="pure">1</in-capmkt:ExistingPercentageOfShareholdingHeldByAcquirer><in-capmkt:PercentageOfAdditionalSharesAcquiredIfExistingHoldingPersists contextRef="OneI" decimals="INF" unitRef="pure">1</in-capmkt:PercentageOfAdditionalSharesAcquiredIfExistingHoldingPersists><in-capmkt:BriefBackgroundAboutTheEntityAcquiredInTermsOfProductsLineOfBusinessAcquired contextRef="OneI">CFCL was incorporated on 22nd March 2022 as a Wholly Owned Subsidiary of CSTL in India and is engaged in the business of manufacture and sale of speciality chemicals.</in-capmkt:BriefBackgroundAboutTheEntityAcquiredInTermsOfProductsLineOfBusinessAcquired><in-capmkt:DateOfIncorporationForAcquisitionEvent contextRef="OneI">2022-03-22</in-capmkt:DateOfIncorporationForAcquisitionEvent><in-capmkt:StartYearOfFirstPreviousYear contextRef="OneI">2024</in-capmkt:StartYearOfFirstPreviousYear><in-capmkt:EndYearOfFirstPreviousYear contextRef="OneI">2025</in-capmkt:EndYearOfFirstPreviousYear><in-capmkt:TurnoverOfFirstPreviousYear contextRef="OneD" decimals="-7" unitRef="INR">470000000</in-capmkt:TurnoverOfFirstPreviousYear><in-capmkt:StartYearOfSecondPreviousYear contextRef="OneI">2023</in-capmkt:StartYearOfSecondPreviousYear><in-capmkt:EndYearOfSecondPreviousYear contextRef="OneI">2024</in-capmkt:EndYearOfSecondPreviousYear><in-capmkt:SecondPreviousYearTurnover contextRef="OneD" decimals="-7" unitRef="INR">20000000</in-capmkt:SecondPreviousYearTurnover><in-capmkt:StartYearOfThirdPreviousYear contextRef="OneI">2022</in-capmkt:StartYearOfThirdPreviousYear><in-capmkt:EndYearOfThirdPreviousYear contextRef="OneI">2023</in-capmkt:EndYearOfThirdPreviousYear><in-capmkt:ThirdPreviousYearTurnover contextRef="OneD" decimals="-7" unitRef="INR">0</in-capmkt:ThirdPreviousYearTurnover><in-capmkt:CountryInWhichTheAcquiredEntityHasPresence contextRef="OneI">India</in-capmkt:CountryInWhichTheAcquiredEntityHasPresence></xbrli:xbrl>