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Soda lye, SODIUM HYDROXIDE SOLUTION 50%
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Description
Sodium Lye 50% – Sodium Hydroxide Solution
Other Names: Caustic soda solution, Sodium hydroxide aqueous solution
CAS Number: 1310-73-2
Sum Formula: NaOH (solution)
Molar Mass (NaOH): 39.997 g/mol
Appearance: Clear, colorless to slightly cloudy liquid
Sodium lye is a high-purity aqueous solution of sodium hydroxide at a concentration of 50%. It is a highly alkaline and corrosive solution widely used in various industrial processes, including soap production, chemical manufacturing, water treatment, and paper and textile processing.
Chemical and Physical Properties
Density: ~1.515 g/cm³ (at 20°C, for 50% solution)
pH: >14 (strongly alkaline)
Melting Point: ~−4°C (for 50% solution)
Boiling Point: ~140°C (for 50% solution)
Solubility in Water: Completely miscible
Solubility in Other Solvents: Soluble in ethanol and methanol
Odor: Odorless
Applications
Soap and Detergent Production: Used in saponification reactions to produce soaps and synthetic detergents.
Chemical Manufacturing: Applied as a strong base in chemical synthesis, neutralization reactions, and pH control.
Water Treatment: Utilized for pH adjustment, coagulation, and treatment of wastewater and drinking water.
Paper Industry: Involved in the pulping and bleaching processes.
Textile Industry: Used in fabric processing, dyeing, and mercerization treatments.
Key Properties
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High Quality: High purity sodium hydroxide solution ensuring consistent and reliable performance.
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Concentration: 50% by weight, suitable for industrial and laboratory-scale applications.
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Efficiency: Effective for applications requiring strong alkalinity and reactive hydroxide ions.
Safety
Signal Word: Danger
H290 (47.5%): May be corrosive to metals [Warning Corrosive to Metals]
H314 (> 99.9%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
H315 (36.5%): Causes skin irritation [Warning Skin corrosion/irritation]
H318 (44.1%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
H319 (36.6%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
P234, P260, P264, P264+P265, P280, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P351+P338, P305+P354+P338, P316, P317, P321, P332+P317, P337+P317, P362+P364, P363, P390, P405, P406, and P501
Handling and Storage
Storage Conditions:
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Store in a tightly closed, corrosion-resistant container.
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Keep in a cool, dry, well-ventilated place, away from acids, metals, and organic materials.
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Protect from heat and freezing.
Handling Precautions:
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Handle with appropriate chemical-resistant gloves, protective eyewear, and suitable clothing.
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Avoid splashes and direct contact with skin, eyes, and clothing.