Sodium Hydroxide

GTC-602

Inorganic Bases

Sodium Hydroxide

CAS No.
1310-73-2
Catalogue ID
GTC-602

Sodium Hydroxide, CAS 1310-73-2. Source-derived identification, physical data and applications are provided for catalogue reference; request the current specification, COA and SDS for the required grade.

Catalogue aliases / related identifiers

Caustic soda; Lye; Sodium hydrate; Soda lye; White caustic

Supplied catalogue source: GTC-602 · Page 47

Reference data — confirm before ordering or use

The information below is a structured migration from the supplied catalogue snapshot. It is not a current product specification, COA or SDS. Confirm the actual supplier, grade, batch documents, classification, packing and destination requirements for your enquiry.


Basic Information of Sodium Hydroxide

CAS No.:1310-73-2
EC No.:215-185-5
Linear Formula:NaOH
Molecular Weight:39.99711
Appearance:White, odorless solid (flakes, pellets, granules)
Melting Point:681 °C(lit.)
Boiling Point:1390°C
Density:1.515 g/mL at 20 °C
Solubility:Highly soluble in water, releasing significant heat. Also soluble in ethanol and methanol.
Hygroscopic & Deliquescent:Readily absorbs moisture and carbon dioxide from the air.
Corrosivity:Highly corrosive to skin, eyes, and certain metals. Requires careful handling.
RIDADR:UN 1823 8/PG 2
Chemical Structure:Molecular Structure of Sodium Hydroxide

Our commitment to delivering high-purity Sodium Hydroxide ensures a reliable and efficient component for your critical processes, offering consistent quality for diverse industrial needs.


Primary Applications of Sodium Hydroxide

Sodium Hydroxide's powerful basicity and versatility make it a fundamental chemical with extensive applications across various industries:

  1. Chemical Manufacturing:

    It is a primary raw material in the production of a vast array of chemicals, including organic chemicals, inorganic compounds, and various sodium salts. It's crucial for acid neutralization, pH adjustment, and as a reactant in numerous synthetic processes.

  2. Pulp and Paper Industry:

    Sodium Hydroxide is extensively used in the Kraft process for pulping wood into paper, helping to dissolve lignin and separate cellulose fibers. It is also used in paper bleaching and deinking processes.

  3. Water Treatment:

    It is employed for pH adjustment and neutralization of acidic wastewater, coagulation, and flocculation in municipal and industrial water treatment plants to remove heavy metals and other impurities.

  4. Soap and Detergent Manufacturing:

    A key ingredient in the saponification process to produce soaps and detergents. It reacts with fats and oils to create soap, and is also used in the formulation of various cleaning products.

  5. Alumina Production (Bayer Process):

    Sodium Hydroxide is vital in the Bayer process for refining bauxite ore to produce alumina, which is then used to manufacture aluminum metal.

  6. Textile Industry:

    Used in the mercerization of cotton to enhance its strength, luster, and dye uptake. It also finds applications in fabric scouring and bleaching.

  7. Petroleum and Natural Gas:

    Employed in refineries to remove acidic impurities (e.g., hydrogen sulfide, carbon dioxide) from crude oil and natural gas streams.

  8. Food Industry:

    Used for various purposes including fruit and vegetable peeling, chocolate and cocoa processing, caramel coloring production, and poultry scalding. (Food-grade NaOH must be used for these applications).


  • Exceptional Purity & Consistent Quality: Our Sodium Hydroxide is manufactured to stringent purity specifications, crucial for ensuring optimal performance and efficiency in your industrial processes, from chemical synthesis to water treatment.

  • Commitment to Quality & Safety: We adhere to the highest industry standards for quality management, safety, and environmental responsibility across all our operations, ensuring peace of mind for our clients and the safe handling of hazardous materials.


Hazards Classification

  • GHS Classification: Corrosive (GHS05), Acute Toxicity (GHS07)

  • Hazard Statements: Causes severe skin burns and eye damage; harmful if swallowed.

  • UN Number: UN 1823

  • Hazard Class: 8 (Corrosive Substances)

  • Packing Group: II

GHS05: Corrosive pictogram
GHS05: Corrosive
GHS07: Exclamation pictogram
GHS07: Acute toxicity
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  • 02Batch or sample COA
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