- Synonyms: Caustic soda
- Purity Limit: ≥ 99% (Assay)
- Molecular Formula: NaOH
- Molecular Weight: 40.00
- CAS No: 1310-73-2
- MDL No: MFCD00003548
- Appearance: White granular beads
- Density: 2.13 g/mL
- Warnings: Corrosive! Toxic!
- Storage Temp: Store at RT
Used to distinguish between red and white wheat.
At room temperature, sodium hydroxide is a white crystalline odorless solid that absorbs moisture from the air. It is a manufactured substance. When dissolved in water or neutralized with acid it liberates substantial heat, which may be sufficient to ignite combustible materials.
Sodium hydroxide is very corrosive. It is generally used as a solid or a 50% solution. Other common names include caustic soda and lye. Sodium hydroxide is used to manufacture soaps, rayon, paper, explosives, dyestuffs, and petroleum products.
It is also used in processing cotton fabric, laundering and bleaching, metal cleaning and processing, oxide coating, electroplating, and electrolytic extracting. It is commonly present in commercial drain and oven cleaners.