Sodium Hydroxide 50% Solution ACS Grade

Product Overview

Sodium Hydroxide 50% Solution ACS Grade is a high-purity, concentrated alkaline liquid (NaOH), commonly referred to as Caustic Soda or Lye. This clear, colorless solution provides rapid hydroxide ion availability for demanding industrial and laboratory applications including pH adjustment, etching, saponification, and analytical procedures. Meeting ACS Reagent Grade specifications, this product minimizes trace contaminants, making it suitable for sensitive chemical manufacturing and environmental testing.

The solution features a specific gravity of approximately 1.515 at 20°C with a concentration tightly controlled at 50% by weight. Its low residue after ignition and strictly monitored heavy metal content ensure compliance with rigorous quality standards. Supplied in chemical-resistant HDPE or glass containers, this 50% Sodium Hydroxide solution offers robust alkaline strength for process applications while adhering to the safety and purity standards required by professional chemists and engineers.

Key Properties

• Chemical Name: Sodium Hydroxide
• Synonyms: Caustic Soda, Lye, Soda Lye
• Formula: NaOH
• CAS Number: 1310-73-2
• Assay: 50% (Min 49%, Max 51%)
• Grade: ACS Reagent Grade
• Specific Gravity: 1.515 (20°C)
• Appearance: Clear, colorless liquid
• Heavy Metals (as Pb): Max 0.1 ppm
• Iron (Fe): Max 0.2 ppm
• Chloride: Max 0.5 ppm
• Residue After Ignition: Max 0.01 wt%

Common Applications

• Water Treatment & pH Control: Used to neutralize acidic wastewater, optimize coagulation, and control corrosion in municipal and industrial water systems.
• Chemical Manufacturing: A primary reactant in the synthesis of polymers, catalysts, and specialty reagents requiring strong basic conditions.
• Soap & Detergent Production: Essential for the saponification process, ensuring reliable fatty acid ester hydrolysis and controlled alkalinity.
• Laboratory Analysis: Functions as a titrant and analytical reagent where ACS-grade purity is required for accurate endpoint determination.
• Industrial Cleaning: Effective degreaser for removing organics, scale, and fats from process equipment and stainless steel.

Safety Precautions

Sodium Hydroxide 50% is highly corrosive. Personnel must wear full PPE, including chemical-resistant gloves, splash goggles, and protective clothing. Ensure usage in well-ventilated areas to avoid inhalation of vapors. Store in a cool, dry location in original HDPE or glass containers, separated from acids and organic materials.

First Aid:
Eyes: Rinse cautiously with water for several minutes. Remove contact lenses if present. Seek medical attention.
Skin: Wash immediately with soap and water. Seek medical attention if irritation persists.
Inhalation: Move to fresh air immediately.
Ingestion: Rinse mouth. Do NOT induce vomiting. Seek emergency medical attention.

Shipping: UN 1824, Sodium hydroxide solution, Class 8, PG II.

Benefits

ACS Reagent Purity: Meets strict limits for trace metals and impurities, ensuring reliability in sensitive analytical and manufacturing processes.
High Concentration: 50% solution reduces volume requirements and shipping frequency compared to dilute alternatives.
Versatile Utility: Suitable for a wide spectrum of uses from heavy industrial neutralization to precise laboratory titration.

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