Synonym(s)
: Caustic soda, sodium hydrate, lye soda
Mol. Formula
: NaOH
EC / List no.
: 215-185-5
CAS no.
: 1310-73-2
Molecular weight
: 39,997
At room temperature, sodium hydroxide is a white, crystalline, odorless solid that absorbs moisture from the air. It is a manufactured item.
Application
» Used in machine wash fluids/detergents, automotive care products, paints and coatings or adhesives, fragrances and air fresheners, coolants in refrigerators, oil-based electric heaters, hydraulic fluids in automotive suspension, lubricants in engine oil and brake fluids.
» Upholstery, furniture, toys, building materials, curtains, shoes, leather products, paper and cardboard products, electronic equipment, metal, wood and plastic building and building materials, tyres, processed wood products, processed textiles and fabrics, brakes in trucks or cars pads are used for sanding buildings (bridges, facades) or vehicles (ships).
Product Specifications
Physical and Chemical Properties
» The white solid appears as sequin-shaped rectangular crystals.
» Odorless.
Properties
Characteristics |
Unit |
Value |
Condition |
Melting point |
°C |
323 |
|
Boiling point |
°C |
1388 |
|
Density |
g/cm³ |
2.13 |
20 °C |
Solubility |
g/ L |
520 |
25 °C, soluble with water |
pKa |
|
14.8 |
25 °C |
Corrosivity |
|
Very corrosive |
|
pH |
|
13 |
0.5% solution |
Surface tension |
Dynes/ cm |
74.35 |
2.72% wt |