{"product_id":"potassium-hydroxide-30-w-v-3-8-l-20-l","title":"Potassium Hydroxide 30% (w\/v) Solution","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat it is.\u003c\/strong\u003e This potassium hydroxide solution contains 30 g of KOH per 100 mL of solution (30% w\/v), offered in 3.8 L, 20 L, and 200 L drum sizes. It is a clear, colorless, strongly alkaline liquid for cleaning, etching, pH control, and process chemistry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat 30% (w\/v) means.\u003c\/strong\u003e Weight-per-volume concentration means 300 g of potassium hydroxide in each liter of solution, about 5.35 M (calculated). Expressing strength per volume makes metering and dosing simple, since every liter delivers the same mass of KOH.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical identity.\u003c\/strong\u003e Potassium hydroxide (caustic potash, CAS 1310-58-3, KOH, 56.11 g\/mol) is a strong base that dissociates completely in water. Its potassium salts are generally more soluble than sodium salts, which matters in soaps, cleaners, and electrolytes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhy a ready-made solution.\u003c\/strong\u003e Dissolving solid KOH releases a large amount of heat and creates caustic dust and spatter. A prepared 30% (w\/v) solution removes that step, improves dosing accuracy, and gives consistent strength from batch to batch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCleaning and degreasing.\u003c\/strong\u003e Hot alkaline KOH solutions saponify fats and oils and strip organic residues, which is why potassium hydroxide is used in heavy-duty cleaners, parts washers, clean-in-place systems, and paint and coating strippers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEtching and processing.\u003c\/strong\u003e In electronics and MEMS work, potassium hydroxide solutions etch silicon anisotropically. In chemical processing, KOH adjusts pH, neutralizes acids, and serves as a reagent for potassium salts and biodiesel catalysts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree sizes, including a drum.\u003c\/strong\u003e The 3.8 L size (LP-PH6030-4) suits laboratories and small batches, the 20 L size (PH6030-20) supports pilot and routine production, and the 200 L technical-grade drum (LP-PH6030-9) supplies continuous industrial use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandling at a glance.\u003c\/strong\u003e Thirty-percent KOH causes severe skin burns and eye damage and is corrosive to aluminum and zinc. Wear chemical splash goggles, a face shield, and alkali-resistant gloves, and always add base slowly to water when diluting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon dioxide absorption.\u003c\/strong\u003e Like all hydroxide solutions, KOH slowly absorbs carbon dioxide from the air to form potassium carbonate, which reduces effective alkalinity. Keep containers sealed and avoid leaving drums or carboys open between uses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelated products.\u003c\/strong\u003e For a more concentrated solution, see Lab Pro's \u003ca href=\"https:\/\/labproinc.com\/products\/potassium-hydroxide-45-w-w-1pt-zp1488-16\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ePotassium Hydroxide 45% (w\/w), 1 Pint\u003c\/a\u003e. For titration work, see \u003ca href=\"https:\/\/labproinc.com\/products\/potassium-hydroxide-1n-sol-1gal-zp1490-128\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ePotassium Hydroxide 0.1 N Solution, 1 Gallon\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; border:1px solid #cfcfcf; margin-bottom:28px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eChemical Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003ePotassium hydroxide, aqueous solution\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eCAS Numbers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e1310-58-3 (potassium hydroxide); 7732-18-5 (water)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eEC Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e215-181-3\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eSynonyms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eCaustic potash solution, potash lye, KOH solution\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eFormula (active)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eKOH\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eMolecular Weight (active)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e56.11 g\/mol\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eConcentration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e30% (w\/v), 300 g\/L\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eApproximate Molarity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eAbout 5.35 M (calculated)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eGrade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eTechnical grade (200 L drum); confirm grade for 3.8 L and 20 L\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eAppearance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eClear, colorless liquid\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eWater Solubility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eMiscible\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eHazard Statements (typical KOH solutions)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eH290, H302, H314\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eDOT (typical)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eUN1814, Potassium hydroxide solution, Class 8 ( SDS)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eExposure Limit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eNIOSH REL 2 mg\/m³ ceiling\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003ePackage Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e3.8 L; 20 L; 200 L drum\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eAvailable Variants\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLP-PH6030-4:\u003c\/strong\u003e 3.8 L for laboratories and small batches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePH6030-20:\u003c\/strong\u003e 20 L for pilot and routine production.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLP-PH6030-9:\u003c\/strong\u003e 200 L technical-grade drum for continuous industrial use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eApplications \/ Common Uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty cleaning:\u003c\/strong\u003e Strips fats, oils, and organic residues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilicon etching:\u003c\/strong\u003e Etches silicon in MEMS processing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH control:\u003c\/strong\u003e Neutralizes acids and raises pH in process streams.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical processing:\u003c\/strong\u003e Supplies KOH for potassium salts and catalysts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePaint and coating stripping:\u003c\/strong\u003e Removes organic coatings from parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStorage, Handling \u0026amp; Shipping\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eCaution\u003c\/strong\u003e: 30% potassium hydroxide causes severe skin burns and eye damage, is harmful if swallowed, and is corrosive to aluminum and zinc. Wear chemical splash goggles, a face shield, and alkali-resistant gloves, and always add base slowly to water.\u003c\/p\u003e\n\u003cp\u003eStore tightly closed in a cool, dry corrosives area for bases, separated from acids, reactive metals, and organic halogen compounds. Use secondary containment, keep containers sealed to limit carbon dioxide uptake, and use alkali-rated pumps for drum dispensing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncompatible materials:\u003c\/strong\u003e Acids, aluminum, zinc, tin, and other reactive metals, and organic halogen compounds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExposure limit (potassium hydroxide):\u003c\/strong\u003e NIOSH REL 2 mg\/m³ ceiling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpill response:\u003c\/strong\u003e Contain with inert absorbent, neutralize cautiously with a weak acid, and rinse with water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirst aid:\u003c\/strong\u003e Skin or eyes: flush with water for at least 15 minutes and seek immediate medical attention.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGHS signal word:\u003c\/strong\u003e Danger.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDOT \/ shipping:\u003c\/strong\u003e UN1814, Potassium hydroxide solution, Class 8;    the Lab Pro SDS.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eRelated Categories \u0026amp; Services\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eShop \u003ca href=\"https:\/\/labproinc.com\/collections\/bases\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBases\u003c\/a\u003e for related products in this category.\u003c\/li\u003e\n\u003cli\u003eExplore \u003ca href=\"https:\/\/labproinc.com\/collections\/inorganic-chemicals\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eInorganic Chemicals\u003c\/a\u003e and \u003ca href=\"https:\/\/labproinc.com\/collections\/acs-grade-laboratory-chemicals\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eACS Grade Laboratory Chemicals\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/labproinc.com\/pages\/be-a-lab-pro-vmi-program\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eVendor Managed Inventory (VMI) Program\u003c\/a\u003e: Lab Pro can stock, track, and replenish this item on site so it never runs out. Contact info@labproinc.com or 888-452-2776 to set up a VMI assessment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eRelated Articles\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/labproinc.com\/blogs\/chemicals-and-solvents\/top-industrial-uses-of-potassium-hydroxide\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eTop 8 Industrial Uses of Potassium Hydroxide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/labproinc.com\/blogs\/chemicals-and-solvents\/5-benefits-of-using-semiconductor-chemicals-for-electronics-manufacturing\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e5 Benefits of Using Semiconductor Chemicals for Electronics Manufacturing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/labproinc.com\/blogs\/news\/chemical-dilution-calculator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eChemical Dilution Calculator: Acid \u0026amp; Solvent Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lab Pro Inc","offers":[{"title":"3.8 L","offer_id":67674936475797,"sku":"LP-PH6030-4","price":131.25,"currency_code":"USD","in_stock":true},{"title":"20 L","offer_id":67674936508565,"sku":"PH6030-20","price":548.67,"currency_code":"USD","in_stock":true},{"title":"200 L Drum","offer_id":67674936541333,"sku":"LP-PH6030-9","price":2095.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/2327\/6437\/files\/MainImage_c3cecaf8-6376-49d0-b230-ea5ec92be232.png?v=1791891925","url":"https:\/\/labproinc2.myshopify.com\/products\/potassium-hydroxide-30-w-v-3-8-l-20-l","provider":"Lab Pro Inc Plus","version":"1.0","type":"link"}