Caustic Soda, also known as sodium hydroxide, lye, or caustic alkali, refers to the same inorganic chemical substance widely used in industrial processing. Identified by CAS 1310‑73‑2, it is a strong alkaline compound that dissociates completely in aqueous systems, enabling neutralization, pH adjustment, and alkaline reaction control. In industrial operations, it is primarily applied in water treatment pH adjustment, where controlled alkalinity is required to stabilize process conditions and support downstream treatment steps.
For industrial supply, this product is provided with competitive factory pricing, customized specifications, and full documentation including MSDS, TDS, COA, supporting bulk supply for continuous industrial use.
Caustic Soda CAS 1310‑73‑2
- CAS: 1310-73-2
- Synonyms: Caustic Soda, Sodium Hydroxide, Lye, Caustic Alkali
- Einecs: 215-185-5
- Molecular Formula: NaOH
- Grade: Industrial grade 99%
- Package: 200kg iron drum or 50kg plastic drum packaging
Product Description
Density: 2.130 g/cm³
Melting point: 318.4°C (591 K)
Boiling point: 1390 °C (1663 K)
Vapor pressure: 24.5mmHg (25°C)
Saturated vapor pressure: 0.13 Kpa (739°C)
Appearance: White crystalline powder
Solubility: easily soluble in water, ethanol, glycerin, insoluble in acetone and ether
Chemical properties：Sodium hydroxide has a corrosive effect on fibers, skin, glass, ceramics, etc., and will release heat when dissolved or diluted in a concentrated solution; Neutralization reaction with inorganic acids can also generate a large amount of heat and generate corresponding salts. reacts with metallic aluminum and zinc, non-metallic boron and silicon to release hydrogen; It has a disproportionate reaction with halogens such as chlorine, bromine, and iodine. It can precipitate metal ions from aqueous solution to become hydroxide; It can cause the saponification reaction of oil and oil to produce sodium salt and alcohol of corresponding organic acids, which is the principle of removing oil stains from fabrics
Product Use:
It is widely used in papermaking, synthetic washing and soap, viscose, rayon and cotton fabrics and other light textile industries, pesticides, dyes, rubber and chemical industries, petroleum drilling, refining petroleum oil and refining tar oil industry, as well as national defense industry, machinery industry, wood processing, metallurgical industry, pharmaceutical industry and urban construction. It is also used in the manufacture of chemicals, paper, soap and detergents, rayon and cellophane, processing bauxite to alumina, and is also used in the mercerization of textiles, water treatment, etc.
FAQ - Technical & Supply Chain
-
Q:
How is this substance chemically distinguished from related alkali compounds like Sodium Carbonate?
A: While both provide alkalinity, Caustic Soda (CAS 1310-73-2) is a strong metallic base that completely dissociates in aqueous solutions, offering significantly higher pH levels and reactivity compared to the weaker buffering capacity of carbonates. -
Q:
In what capacity is this chemical utilized during pulp and paper manufacturing?
A: It is typically applied as a core cooking chemical in the Kraft process for de-lignification, where its alkaline properties facilitate the separation of lignin from cellulose fibers to produce purified wood pulp.
Documents
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- COA for batch-based quality reference
- TDS for key physical and chemical information
- SDS / MSDS for handling, storage, and safety reference
- Packing information for sample, trial, and bulk orders
- Technical communication based on application and specification requirements
Quotation
Information to Confirm Before Quotation
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- Product name and CAS number
- Application or intended end use
- Required purity, grade, or specification
- Sample quantity, trial order, or bulk demand
- Preferred packing form or net weight
- Destination country or port
- Required documents or compliance expectations
Storage & Handling
Packaging, Storage, and Handling Notes
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Supply Support
Sample, Bulk Order and Repeat Supply Support
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