Quick Answer
Sodium Hydroxide Safety Measures: What to Know? Sodium hydroxide, also known as lye, is a highly caustic substance that requires careful handling when making soap. Users must take precautions to avoid skin and eye irritation, as well as inhalation.
Handling and Storage
When working with sodium hydroxide, always handle it in a well-ventilated area, away from children and pets. Wear protective gear, including long-sleeved clothing, gloves, goggles, and a face mask. Keep the lye in a sealed container, labeled clearly to avoid confusion with other household items. For optimal storage, store it in an area that is not prone to moisture, such as a dry, cool basement or a designated storage room.
Mixing and Weighing
When mixing sodium hydroxide with water or oils, the temperature and proportions are critical. The ideal temperature for mixing is between 100°F and 110°F (38°C to 43°C). To avoid accidents, use a digital scale to accurately measure the sodium hydroxide. A typical recipe calls for 1 part sodium hydroxide to 2 parts water by weight. Always mix the lye with water first, then slowly add the oils to the mixture.
Emergency Procedures
In case of skin or eye irritation, immediately flush the affected area with plenty of water for at least 15 minutes. For severe burns, seek medical attention immediately. If the substance is inhaled, move the person to fresh air and provide medical attention if symptoms persist. Keep a fire extinguisher nearby, as sodium hydroxide can ignite in the presence of water and heat.
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