Hanson Chemicals

Sodium Hydroxide

Formula: NaOH
CAS Number: 1310-73-2
EC Number (EINECS): 215-185-5
HS Code: 28151100 (solid)
UN Number: 1823 (solid)
IUPAC Name: Sodium Hydroxide
Also Known As: Caustic Soda; Lye; Sodium Hydrate
Molecular Weight, g/mol: 40.00

Typical Specifications

Appearance: White solid (flakes, pellets, powder) or clear aqueous solution
Odor: Odorless
Melting Point, °C: 318
Boiling Point, °C: 1,388
Density, g/cm³ (at 20°C): 2.13 (solid)
Flash Point, °C: Non-flammable
pH (1% solution): ~13–14
Purity, %: ≥98 (solid)
Grades Available: Industrial, Technical, Food Grade (FCC), Analytical
Packaging: 25kg bags, 50kg drums, jumbo bags, 200kg drums, IBC tanks, bulk liquid tankers

Applications / Uses

Primary Applications

  • Essential raw material for soaps and detergents

  • Used in production of pulp and paper (kraft process)

  • Neutralization and pH adjustment in water treatment

  • Raw material in manufacture of alumina and other inorganic chemicals

Secondary Applications

  • Oil refining and petroleum industry (caustic washing)

  • Food processing (peeling of fruits & vegetables, cocoa/chocolate processing, soft drink production)

  • Textile industry (scouring, mercerization)

  • Cleaning agent and degreaser in industrial applications

End Industries Served: Chemicals, Paper & Pulp, Textiles, Soap & Detergent, Water Treatment, Petroleum, Food Processing, Alumina/Metals, Cleaning Chemicals

Safety & Handling Information

Hazard Class (GHS): Corrosive (Category 1A)

Hazard Statements (H-Codes):

  • H290: May be corrosive to metals

  • H314: Causes severe skin burns and eye damage

Precautionary Statements (P-Codes):

  • P280: Wear protective gloves/eye protection/face protection

  • P301 + P330 + P331: IF SWALLOWED – rinse mouth; do not induce vomiting

  • P305 + P351 + P338: IF IN EYES – rinse cautiously with water for several minutes, remove contact lenses if present

Storage Conditions

  • Store in a dry, well-ventilated area

  • Protect from moisture and humidity (highly hygroscopic)

  • Keep container tightly closed

Transport Information

  • ADR/RID: Class 8, UN1823 (solid), UN1824 (solution), PG II

  • IMDG: Class 8, UN1823/1824

  • IATA: Class 8, UN1823/1824

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