Sodium Hydroxide 32%
Sodium Hydroxide 32% Solution (Soda 32)
Chemical name: Sodium hydroxide, aqueous solution
Synonyms: Caustic soda solution, Lye solution
CAS number: 1310-73-2
EC number: 215-185-5
Formula: NaOH
Molecular weight: 40.0 g mol-1
Product Specification
| Concentration | 32% w/w NaOH in water |
| Appearance | Clear to slightly hazy liquid |
| Odour | Odourless |
| pH (20 °C, neat) | > 13.5 |
| Density (20 °C) | ~1.33 g mL-1 |
| Solubility | Fully miscible in water |
| Freezing point | ~–15 °C |
Applications
- pH adjustment and neutralisation in liquid formulations
- Degreasing and heavy-duty cleaning agents
- Soap and detergent production
- Paint strippers and surface preparation products
- Chemical intermediate in synthesis and process industries
- Descaling, effluent treatment and water purification
Industries
- Cleaning & Detergents — manufacture of degreasers, surface cleaners, disinfectants
- Automotive & Industrial — wheel cleaners, alkaline traffic films, heavy-duty degreasers
- Textiles & Leather — scouring, mercerisation, pH adjustment
- Pulp & Paper — pulping and bleaching processes
- Water Treatment — effluent neutralisation, pH control
- Chemical Manufacturing — raw material for numerous downstream syntheses
Packaging & Storage
Available in 5 L, 25 L, 200 L drum and 1 000 L IBC formats.
Store in tightly sealed containers at 5–30 °C. Protect from freezing and direct sunlight.
Shelf life: 24 months from manufacture date under recommended storage conditions.
Safety & Regulatory
Classified as Corrosive under UK-CLP regulations.
Hazard statements: H314 – Causes severe skin burns and eye damage.
Transport: UN1824, Sodium hydroxide solution, 8, II.
Use only with appropriate PPE: chemical resistant gloves, safety goggles/face shield, protective clothing. Always add caustic soda to water, never water to caustic.
Refer to the current Safety Data Sheet (SDS) for detailed handling, storage, PPE and disposal guidance.
For bulk supply, technical documentation or private-label enquiries, please contact the Innovation Chem technical service team.