Bases and Caustics

About Bases and Caustics

Bases and Caustics are high-pH alkaline compounds, such as Sodium Hydroxide (CAS 1310-73-2) and Potassium Hydroxide (CAS 1310-58-3), that are essential for neutralization, hydrolysis, and saponification in industrial chemistry. These substances, often referred to as lye or caustic soda/potash, are characterized by their ability to react with acids to form salts and their high reactivity with organic matter. They are fundamental in applications ranging from municipal water treatment to precision electronics manufacturing due to their consistent alkalinity and catalytic properties.

Common Applications

• Soap and Detergent Manufacturing: High-purity Sodium Hydroxide is used to saponify fats and oils, converting them into soap and glycerin.
• Precision Etching and Cleaning: Caustic solutions at 10-25% concentrations are used to etch silicon wafers and clean optical glass in semiconductor environments.
• Electrolysis and Hydrogen Production: Potassium Hydroxide serves as the primary electrolyte in alkaline water electrolyzers due to its high ionic conductivity.
• Metal Finishing and Electroplating: Strong bases are utilized for chemical de-rusting, paint stripping, and as alkaline degreasers prior to electroplating.
• Water Treatment and pH Adjustment: Caustic solutions are metered into municipal and industrial systems to neutralize acidic wastewater and prevent pipe corrosion.
• Biodiesel Production: Sodium or Potassium Hydroxide acts as a catalyst in the transesterification of vegetable oils into methyl esters.
• Spent Bath Neutralization: Industrial processes require controlled neutralization of spent alkaline baths to meet EPA discharge standards.

What We Carry

Alliance Chemical stocks a comprehensive inventory of bases in liquid and solid forms across multiple purity levels. We offer concentrations ranging from 10% solutions to 99% anhydrous flakes and pellets to meet specific process requirements.

Available packaging includes 1-quart bottles, 1-gallon jugs, 5-gallon pails, 55-gallon drums, and 275-gallon IBC totes. Custom dilutions and specialty formulations are available upon request.

Safety & Handling

Bases and caustics are classified as GHS05 Corrosive and can cause severe chemical burns and permanent eye damage upon contact. These materials are highly exothermic when diluted in water; always add the chemical to water slowly, never water to the chemical, to prevent violent boiling or splashing.

Strict adherence to OSHA 29 CFR 1910.1200 (Hazard Communication) and OSHA 29 CFR 1910.132 (PPE) is required. Mandatory PPE includes chemical-splash goggles, face shields, neoprene or nitrile gloves, and alkali-resistant aprons. Store bases in a cool, dry area away from strong acids, oxidizers, and reactive metals like aluminum, zinc, and tin, which can react to generate flammable hydrogen gas. Refer to NFPA 704 ratings, typically Health 3, Flammability 0, and Instability 1 for concentrated hydroxides. For disposal, follow EPA RCRA guidelines for D002 corrosive hazardous waste (pH ≥ 12.5). In case of contact, flush the affected area with water for at least 15-20 minutes and seek immediate medical attention. View our Safety Data Sheets for detailed response protocols.

Sourcing & Quality

Shipped from Taylor, Texas — same-day on in-stock items.

COA included with every order. Certificate of Analysis documents lot-specific purity and specifications.

28 years serving 55,000+ customers including 244 federal contracts.

Reviewed by Andre Taki, Technical Product Specialist — 28 years in chemical distribution

Last updated: March 2026