The Material Safety Data Sheet (MSDS) for Sodium Hydroxide (NaOH), also known as caustic soda or lye, is a crucial document that provides information on the safe handling, use, storage, and disposal of this chemical. NaOH is a highly alkaline substance that is widely used in various industries, including manufacturing, water treatment, and cleaning.
Introduction to Sodium Hydroxide (NaOH)
Sodium Hydroxide is a white, odorless, and highly caustic solid that is soluble in water. It is highly reactive and can cause severe burns and eye damage upon contact with skin or eyes. The chemical formula for NaOH is NaOH, and its molecular weight is 40.00 g/mol. The CAS number for Sodium Hydroxide is 1310-73-2.
Physical and Chemical Properties
The physical and chemical properties of Sodium Hydroxide are as follows:
- Molecular Formula: NaOH
- Molecular Weight: 40.00 g/mol
- CAS Number: 1310-73-2
- Appearance: White, odorless solid
- Solubility: Soluble in water
- Melting Point: 139°C (282°F)
- Boiling Point: 1388°C (2530°F)
Hazards Identification
Sodium Hydroxide is a highly hazardous substance that can cause severe burns, eye damage, and respiratory problems. The hazards associated with NaOH are:
- Corrosive: Can cause severe burns and eye damage upon contact with skin or eyes
- Irritant: Can cause respiratory problems, coughing, and shortness of breath
- Flammable: Not flammable, but can ignite combustible materials
Safe Handling and Storage
To ensure safe handling and storage of Sodium Hydroxide, the following precautions should be taken:
- Wear Protective Clothing: Wear long sleeves, gloves, safety glasses, and a face mask when handling NaOH
- Store in a Well-Ventilated Area: Store NaOH in a well-ventilated area, away from direct sunlight and heat sources
- Keep Away from Combustible Materials: Keep NaOH away from combustible materials, such as wood, paper, and cloth
| Category | Data |
|---|---|
| OSHA PEL: | 2 mg/m³ (as NaOH) |
| ACGIH TLV: | 2 mg/m³ (as NaOH) |
| NIOSH REL: | 2 mg/m³ (as NaOH) |
First Aid Measures
In case of an accident or exposure to Sodium Hydroxide, the following first aid measures should be taken:
- Eye Contact: Flush eyes with water for at least 15 minutes and seek medical attention immediately
- Skin Contact: Wash affected area with soap and water and seek medical attention if irritation persists
- Inhalation: Move to fresh air and seek medical attention if respiratory problems occur
- Ingestion: Do not induce vomiting and seek medical attention immediately
Fire Fighting Measures
In case of a fire, the following fire fighting measures should be taken:
- Extinguishing Media: Use dry chemical, carbon dioxide, or foam to extinguish fires involving NaOH
- Fire Fighting Equipment: Wear self-contained breathing apparatus and protective clothing to prevent exposure to NaOH
What is the recommended storage temperature for Sodium Hydroxide?
+The recommended storage temperature for Sodium Hydroxide is between 15°C (59°F) and 30°C (86°F), in a well-ventilated area, away from direct sunlight and heat sources.
What is the OSHA PEL for Sodium Hydroxide?
+The OSHA PEL for Sodium Hydroxide is 2 mg/m³ (as NaOH).
In conclusion, Sodium Hydroxide is a highly hazardous substance that requires careful handling, storage, and disposal. It is essential to follow the recommended safety protocols, including wearing protective clothing and storing NaOH in a well-ventilated area, to ensure a safe working environment. In case of an accident or exposure, it is crucial to take the recommended first aid measures and seek medical attention immediately.
