Sodium Hydroxide Solution
| Formula: | NaOH (aqueous solution) |
| CAS Number: | 1310-73-2 |
| EC Number (EINECS): | 215-185-5 |
| HS Code: | 28151200 |
| UN Number: | 1823 |
| IUPAC Name: | Sodium Hydroxide |
| Also Known As: | Caustic Soda Solution; Lye |
| Molecular Weight, g/mol: | 40.00 |
Typical Specifications
| Appearance: | Clear, colorless to slightly opaque liquid |
| Odor: | Odorless |
| Density, g/cm³ (at 20°C): | 1.33–1.53 (depending on concentration) |
| Solubility: | Miscible with water |
| pH (1% solution): | 13–14 |
| Purity, %: | ≥98 |
| Packaging: | HDPE drums, IBCs, bulk tanks |
Applications / Uses
Primary Applications
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Used in chemical manufacturing (soaps, detergents, paper, textiles)
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Neutralization and pH adjustment in water treatment
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Production of sodium salts and organic chemicals
Secondary Applications
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Drain cleaners and industrial cleaning solutions
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Food processing (as acidity regulator E524)
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Petroleum refining and oil extraction
End Industries Served: Chemicals, Water Treatment, Soap & Detergents, Food & Beverage, Petroleum, Textile, Paper
Safety & Handling Information
Hazard Class (GHS): Corrosive (Category 1A)
Hazard Statements (H-Codes):
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H314: Causes severe skin burns and eye damage
Precautionary Statements (P-Codes):
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P260: Do not breathe mist/vapors
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P264: Wash thoroughly after handling
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P280: Wear protective gloves/eye protection
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P301 + P330 + P331: IF SWALLOWED – rinse mouth; do NOT induce vomiting
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P303 + P361 + P353: IF ON SKIN (or hair) – remove contaminated clothing, rinse with water
Storage Conditions
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Store in a cool, dry, well-ventilated area
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Keep containers tightly closed
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Avoid contact with acids and metals
Transport Information
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ADR/RID: Class 8, UN1823, PG II
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IMDG: Class 8, UN1823
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IATA: Class 8, UN1823