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unitRef="INR">143637000</in-capmkt:PaidUpValueOfEquityShareCapital><in-capmkt:FaceValueOfEquityShareCapital contextRef="OneD" decimals="INF" unitRef="INRPerShare">10</in-capmkt:FaceValueOfEquityShareCapital><in-capmkt:BasicEarningsLossPerShareFromContinuingOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">3.76</in-capmkt:BasicEarningsLossPerShareFromContinuingOperations><in-capmkt:DilutedEarningsLossPerShareFromContinuingOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">3.75</in-capmkt:DilutedEarningsLossPerShareFromContinuingOperations><in-capmkt:BasicEarningsLossPerShareFromDiscontinuedOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">0</in-capmkt:BasicEarningsLossPerShareFromDiscontinuedOperations><in-capmkt:DilutedEarningsLossPerShareFromDiscontinuedOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">0</in-capmkt:DilutedEarningsLossPerShareFromDiscontinuedOperations><in-capmkt:BasicEarningsLossPerShareFromContinuingAndDiscontinuedOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">3.76</in-capmkt:BasicEarningsLossPerShareFromContinuingAndDiscontinuedOperations><in-capmkt:DilutedEarningsLossPerShareFromContinuingAndDiscontinuedOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">3.75</in-capmkt:DilutedEarningsLossPerShareFromContinuingAndDiscontinuedOperations><in-capmkt:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock contextRef="OneD">NOTES:							 &lt;BR&gt; 
1 The above Statement of Standalone unaudited financial results were reviewed and recommended by the Audit Committee at its meeting held on 31 July 2025 and approved by the Board of Directors of the Company at their meeting held on that date.  &lt;BR&gt; 
						 &lt;BR&gt; 
2 The Company has identified its reportable segments in accordance with Ind AS 108 - Operating Segments. Accordingly, two reportable segments i.e. Chemicals and Related Products and PVC - O Pipes have been identified, the details of which are given below:						 &lt;BR&gt; 
						 (Amount Rs. In Lakhs) 	 &lt;BR&gt; 
Sl. No.	Particulars      3 Months ended  Preceding Corresponding3 months ended   Previous year  &lt;BR&gt; 
			30/06/2025 	3 Months                30/06/2024 in the                     ended  &lt;BR&gt; 
					ended                        previous year                 31/03/2025 &lt;BR&gt; 
	                                              	31/03/2025    &lt;BR&gt; 
			 (Unaudited) 	 (Refer Note 4) 	          (Unaudited) 	        (Audited) 	 &lt;BR&gt; 
I Segment Revenue						 &lt;BR&gt; 
a) Chemicals and	 4,887.90 	 5,631.13 	            4,510.98 	                     19,064.00  &lt;BR&gt; 
related Products	 &lt;BR&gt; 
b) PVC-O Pipes		  3,870.20 	 3,153.46 	           3,093.07 	                    13,145.05 	 &lt;BR&gt; 
			 8,758.10	 8,784.59 	          7,604.05 	                   32,209.05 	 &lt;BR&gt; 
Less: Inter Segment Revenue	 -   	 	-   		 -   	   	         -   	 &lt;BR&gt; 
Net Segment Revenue	 8,758.10 	 8,784.59 	           7,604.05 	                    32,209.05 	 &lt;BR&gt; 
II Segment Result before tax						 &lt;BR&gt; 
a) Chemicals and	 (58.85)	 	287.24 	 		(334.46)	       (959.13)  related Products &lt;BR&gt; 
b) PVC-O Pipes		 863.16 	 	316.87 	 		739.52 	 	      3,049.01 	 &lt;BR&gt; 
Total			 804.31 	 	604.11 	 		405.06 	 	      2,089.88 	 &lt;BR&gt; 
Less: Inter Segment Result -   		 -   			 -   			 -   	 &lt;BR&gt; 
Less: Finance Cost	 (156.40)	 (156.20)	 	(51.08)		      (491.58)	 &lt;BR&gt; 
Add: Other Income	 105.66 	 	127.42 	 		256.63 	 	       584.92 	 &lt;BR&gt; 
Total Profit Before Tax	 753.57 	 	575.33 	 		610.61 	 	    2,183.22 	 &lt;BR&gt; 
III Segment Assets:						 &lt;BR&gt; 
a) Chemicals and         21,324.89 	 19,275.78 	           17,199.98 	  19,275.78            related Products	 &lt;BR&gt; 
b) PVC-O Pipes	         18,479.55 	 	15,858.21 		 14,510.38 	  15,858.21 	 &lt;BR&gt; 
Total Segment Assets 39,804.44 	 35,133.99 		 31,710.36 	 35,133.99 	 &lt;BR&gt; 
Add: Unallocable assets  17,591.20 	 19,463.71 		 17,199.50 	 19,463.71 	 &lt;BR&gt; 
Total Assets		 57,395.64 	 54,597.70 	 	48,909.86 	 54,597.70 	 &lt;BR&gt; 
IV Segment Liabilities:						 &lt;BR&gt; 
a) Chemicals and         4,435.18 	 	3,207.72 		 2,951.24 	 3,207.72        related Products	 &lt;BR&gt; 
b) PVC-O Pipes	          1,820.63 	 	2,181.34 		 2,361.91 	 2,181.34 	 &lt;BR&gt; 
Total Segment Liabilities  6,255.81 	 5,389.06 	 	5,313.15 	 5,389.06 	 &lt;BR&gt; 
Add: Unallocable liabilities  9,808.20 	 8,430.87 		 3,844.36 	 8,430.87 	 &lt;BR&gt; 
Total Liabilities		 16,064.01 	 13,819.93 		 9,157.51 	 13,819.93 	 &lt;BR&gt; 
3 During the quarter ended 30 June 2025, based on technical assessment the company has reassessed estimated useful life of certain items of plant and machinery of the PVC- O Division, such reassessment has been considered as change in accounting estimate and applied prospectively. Accordingly, the depreciation for the current and subsequent quarters is lower by Rs. 259.00 lakhs per quarter  &lt;BR&gt; 
 &lt;BR&gt; 
4 During the current quarter ended 30 June 2025, the Company had allotted Nil Equity shares of Rs. 10 each upon exercise of Employee stock options by the eligible employees under Employee's Stock Option Scheme CAESOS 2020. &lt;BR&gt; 
 &lt;BR&gt; 
5 The figures for the quarter ended 31 March 2025 are the balancing figures between audited figures of the full financial year ended 31 March 2025 and published year to date figure upto third quarter ended 31 December 2024.									 &lt;BR&gt; 
							      For Chemfab Alkalis Limited		          Suresh Krishnamurthi Rao &lt;BR&gt; 
Place: Chennai							       Chairman &lt;BR&gt; 
Date: 31 July 2025						DIN No: 00127809</in-capmkt:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock><in-capmkt:DescriptionOfOtherExpenses contextRef="OneExpenses1D">Direct Manufacturing Expenses - Power, Fuel &amp; Others</in-capmkt:DescriptionOfOtherExpenses><in-capmkt:OtherExpenses contextRef="OneExpenses1D" decimals="-3" unitRef="INR">288803000</in-capmkt:OtherExpenses><in-capmkt:DescriptionOfOtherExpenses contextRef="OneExpenses2D">Other Expenses</in-capmkt:DescriptionOfOtherExpenses><in-capmkt:OtherExpenses contextRef="OneExpenses2D" decimals="-4" unitRef="INR">127280000</in-capmkt:OtherExpenses><in-capmkt:DescriptionOfReportableSegment contextRef="OneReportable1D">Chemicals and related Products</in-capmkt:DescriptionOfReportableSegment><in-capmkt:SegmentRevenue contextRef="OneReportable1D" decimals="-4" unitRef="INR">488790000</in-capmkt:SegmentRevenue><in-capmkt:DescriptionOfReportableSegment contextRef="OneReportable2D">PVC-O Pipes</in-capmkt:DescriptionOfReportableSegment><in-capmkt:SegmentRevenue contextRef="OneReportable2D" decimals="-4" unitRef="INR">387020000</in-capmkt:SegmentRevenue><in-capmkt:SegmentRevenue contextRef="OneD" decimals="-4" unitRef="INR">875810000</in-capmkt:SegmentRevenue><in-capmkt:InterSegmentRevenue contextRef="OneD" decimals="-5" unitRef="INR">0</in-capmkt:InterSegmentRevenue><in-capmkt:SegmentRevenueFromOperations contextRef="OneD" decimals="-4" unitRef="INR">875810000</in-capmkt:SegmentRevenueFromOperations><in-capmkt:DescriptionOfReportableSegment contextRef="OneReportableFinance1D">Chemicals and related Products</in-capmkt:DescriptionOfReportableSegment><in-capmkt:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableFinance1D" decimals="-3" unitRef="INR">-5885000</in-capmkt:SegmentProfitLossBeforeTaxAndFinanceCosts><in-capmkt:DescriptionOfReportableSegment contextRef="OneReportableFinance2D">PVC-O Pipes</in-capmkt:DescriptionOfReportableSegment><in-capmkt:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableFinance2D" decimals="-3" unitRef="INR">86316000</in-capmkt:SegmentProfitLossBeforeTaxAndFinanceCosts><in-capmkt:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneD" decimals="-3" unitRef="INR">80431000</in-capmkt:SegmentProfitLossBeforeTaxAndFinanceCosts><in-capmkt:SegmentFinanceCosts contextRef="OneD" decimals="-4" unitRef="INR">15640000</in-capmkt:SegmentFinanceCosts><in-capmkt:OtherUnallocableExpenditureNetOffUnAllocableIncome contextRef="OneD" decimals="-3" unitRef="INR">-10566000</in-capmkt:OtherUnallocableExpenditureNetOffUnAllocableIncome><in-capmkt:SegmentProfitBeforeTax contextRef="OneD" decimals="-3" unitRef="INR">75357000</in-capmkt:SegmentProfitBeforeTax><in-capmkt:DescriptionOfReportableSegment contextRef="OneReportable31D">Chemicals and related Products</in-capmkt:DescriptionOfReportableSegment><in-capmkt:SegmentAssets contextRef="OneReportable31I" decimals="-3" unitRef="INR">2132489000</in-capmkt:SegmentAssets><in-capmkt:DescriptionOfReportableSegment contextRef="OneReportable32D">PVC-O Pipes</in-capmkt:DescriptionOfReportableSegment><in-capmkt:SegmentAssets contextRef="OneReportable32I" decimals="-3" unitRef="INR">1847955000</in-capmkt:SegmentAssets><in-capmkt:SegmentAssets contextRef="OneI" decimals="-3" unitRef="INR">3980444000</in-capmkt:SegmentAssets><in-capmkt:UnAllocableAssets contextRef="OneI" decimals="-4" unitRef="INR">1759120000</in-capmkt:UnAllocableAssets><in-capmkt:NetSegmentAssets contextRef="OneI" decimals="-3" unitRef="INR">5739564000</in-capmkt:NetSegmentAssets><in-capmkt:DescriptionOfReportableSegment contextRef="OneReportable41D">Chemicals and related Products</in-capmkt:DescriptionOfReportableSegment><in-capmkt:SegmentLiabilities contextRef="OneReportable41I" decimals="-3" unitRef="INR">443518000</in-capmkt:SegmentLiabilities><in-capmkt:DescriptionOfReportableSegment contextRef="OneReportable42D">PVC-O Pipes</in-capmkt:DescriptionOfReportableSegment><in-capmkt:SegmentLiabilities contextRef="OneReportable42I" decimals="-3" unitRef="INR">182063000</in-capmkt:SegmentLiabilities><in-capmkt:SegmentLiabilities contextRef="OneI" decimals="-3" unitRef="INR">625581000</in-capmkt:SegmentLiabilities><in-capmkt:UnAllocableLiabilities contextRef="OneI" decimals="-4" unitRef="INR">980820000</in-capmkt:UnAllocableLiabilities><in-capmkt:NetSegmentLiabilities contextRef="OneI" decimals="-3" unitRef="INR">1606401000</in-capmkt:NetSegmentLiabilities><in-capmkt:DisclosureOfNotesOnSegmentsExplanatoryTextBlock contextRef="OneD">The Company has identified its reportable segments in accordance with Ind AS 108 - Operating Segments. Accordingly, two reportable segments i.e. Chemicals and Related Products and PVC - O Pipes have been identified, the details of which are given below:						 &lt;BR&gt; 
						 (Amount Rs. In Lakhs) 	 &lt;BR&gt; 
Sl. No.	Particulars      3 Months ended   Preceding  Corresponding3 months ended   Previous year  &lt;BR&gt; 
			30/06/2025 	3 Months                30/06/2024 in the                     ended  &lt;BR&gt; 
					ended                        previous year                31/03/2025 &lt;BR&gt; 
	                                              	31/03/2025    &lt;BR&gt; 
			 (Unaudited) 	 (Refer Note 4) 	          (Unaudited) 	        (Audited) 	 &lt;BR&gt; 
I Segment Revenue						 &lt;BR&gt; 
a) Chemicals and	 4,887.90 	 5,631.13 	            4,510.98 	                     19,064.00  &lt;BR&gt; 
related Products	 &lt;BR&gt; 
b) PVC-O Pipes		  3,870.20 	 3,153.46 	           3,093.07 	                    13,145.05 	 &lt;BR&gt; 
			 8,758.10	 8,784.59 	          7,604.05 	                   32,209.05 	 &lt;BR&gt; 
Less: Inter Segment Revenue	 -   	 	-   		 -   	   	         -   	 &lt;BR&gt; 
Net Segment Revenue	 8,758.10 	 8,784.59 	           7,604.05 	                    32,209.05 	 &lt;BR&gt; 
II Segment Result before tax						 &lt;BR&gt; 
a) Chemicals and	 (58.85)	 	287.24 	 		(334.46)	       (959.13)  related Products &lt;BR&gt; 
b) PVC-O Pipes		 863.16 	 	316.87 	 		739.52 	 	      3,049.01 	 &lt;BR&gt; 
Total			 804.31 	 	604.11 	 		405.06 	 	      2,089.88 	 &lt;BR&gt; 
Less: Inter Segment Result -   		 -   			 -   			 -   	 &lt;BR&gt; 
Less: Finance Cost	 (156.40)	 (156.20)	 	(51.08)		      (491.58)	 &lt;BR&gt; 
Add: Other Income	 105.66 	 	127.42 	 		256.63 	 	       584.92 	 &lt;BR&gt; 
Total Profit Before Tax	 753.57 	 	575.33 	 		610.61 	 	    2,183.22 	 &lt;BR&gt; 
III Segment Assets:						 &lt;BR&gt; 
a) Chemicals and         21,324.89 	 19,275.78 	           17,199.98 	  19,275.78            related Products	 &lt;BR&gt; 
b) PVC-O Pipes	         18,479.55 	 	15,858.21 		 14,510.38 	  15,858.21 	 &lt;BR&gt; 
Total Segment Assets 39,804.44 	 35,133.99 		 31,710.36 	 35,133.99 	 &lt;BR&gt; 
Add: Unallocable assets  17,591.20 	 19,463.71 		 17,199.50 	 19,463.71 	 &lt;BR&gt; 
Total Assets		 57,395.64 	 54,597.70 	 	48,909.86 	 54,597.70 	 &lt;BR&gt; 
IV Segment Liabilities:						 &lt;BR&gt; 
a) Chemicals and         4,435.18 	 	3,207.72 		 2,951.24 	 3,207.72        related Products	 &lt;BR&gt; 
b) PVC-O Pipes	          1,820.63 	 	2,181.34 		 2,361.91 	 2,181.34 	 &lt;BR&gt; 
Total Segment Liabilities  6,255.81 	 5,389.06 	 	5,313.15 	 5,389.06 	 &lt;BR&gt; 
Add: Unallocable liabilities  9,808.20 	 8,430.87 		 3,844.36 	 8,430.87 	 &lt;BR&gt; 
Total Liabilities		 16,064.01 	 13,819.93 		 9,157.51 	 13,819.93</in-capmkt:DisclosureOfNotesOnSegmentsExplanatoryTextBlock><in-capmkt:DescriptionOfItemThatWillNotBeReclassifiedToProfitAndLoss contextRef="D_ItemsThatWillNotBeReclassifiedToProfitAndLoss11">Remeasurement of net defined benefit liability</in-capmkt:DescriptionOfItemThatWillNotBeReclassifiedToProfitAndLoss><in-capmkt:AmountOfItemThatWillNotBeReclassifiedToProfitAndLoss contextRef="D_ItemsThatWillNotBeReclassifiedToProfitAndLoss11" decimals="-3" unitRef="INR">1452000</in-capmkt:AmountOfItemThatWillNotBeReclassifiedToProfitAndLoss><in-capmkt:DescriptionOfItemThatWillNotBeReclassifiedToProfitAndLoss contextRef="D_ItemsThatWillNotBeReclassifiedToProfitAndLoss12">Fair value gain on investments in equity instruments designated as at FVTOCI</in-capmkt:DescriptionOfItemThatWillNotBeReclassifiedToProfitAndLoss><in-capmkt:AmountOfItemThatWillNotBeReclassifiedToProfitAndLoss contextRef="D_ItemsThatWillNotBeReclassifiedToProfitAndLoss12" decimals="-3" unitRef="INR">145000</in-capmkt:AmountOfItemThatWillNotBeReclassifiedToProfitAndLoss><in-capmkt:AmountOfItemThatWillNotBeReclassifiedToProfitAndLoss contextRef="OneD" decimals="-3" unitRef="INR">1597000</in-capmkt:AmountOfItemThatWillNotBeReclassifiedToProfitAndLoss><in-capmkt:IncomeTaxRelatingToItemsThatWillNotBeReclassifiedToProfitOrLoss contextRef="OneD" decimals="-3" unitRef="INR">423000</in-capmkt:IncomeTaxRelatingToItemsThatWillNotBeReclassifiedToProfitOrLoss><in-capmkt:IncomeTaxRelatingToItemsThatWillBeReclassifiedToProfitOrLoss contextRef="OneD" decimals="-5" unitRef="INR">0</in-capmkt:IncomeTaxRelatingToItemsThatWillBeReclassifiedToProfitOrLoss><in-capmkt:OtherComprehensiveIncome contextRef="OneD" decimals="-3" unitRef="INR">1174000</in-capmkt:OtherComprehensiveIncome></xbrli:xbrl>