Caustic Soda Pearls High-Purity Sodium Hydroxide for Industrial Use

1. Basic information

Product Name: Tablet Alkali

Chemical name: Sodium Hydroxide

chemical formula: NaOH

CAS number: 1310-73-2

Appearance: White flaky solid

Purity: usually above 99%

2. Physical and chemical properties

Molecular weight: 40.00 g/mol

Melting point: 318 ° C

Boiling point: 1388 ° C

Density: 2.13 g/cm ³

Solubility: soluble in water, soluble in ethanol and glycerol

3. Main purpose

Chemical industry: used for manufacturing soap, detergent, paper, textiles, etc.

Petroleum industry: used for refining petroleum products.

Water treatment: used to adjust the pH value of water and treat wastewater.

Food industry: used as a food additive for processing certain foods.

Other uses: Used for manufacturing chemicals, dyes, drugs, etc.

Characteristics

High purity: The purity of caustic soda beads is usually high, generally reaching more than 98% or even higher. High purity means that there are very few impurities in it, which helps to obtain more stable chemical reaction effects and higher quality products in industrial production.

Strong alkalinity: It has strong alkalinity and can completely ionize hydroxide ions in water. Its alkalinity is much stronger than that of general alkaline substances. This characteristic makes it play a key role in many industrial processes that require pH adjustment.

Soluble in water: It can dissolve quickly in water and release a lot of heat during the dissolution process. Its aqueous solution has good conductivity.

Strong hygroscopicity: Caustic soda beads have strong hygroscopicity and can absorb moisture in the air and deliquesce. Therefore, it is necessary to pay attention to sealing during storage and use to prevent it from reducing purity or causing other chemical reactions due to moisture absorption.

Industrial application

Papermaking industry: Used in the cooking and bleaching process in paper production. During the cooking stage, caustic soda beads can react with lignin in wood to dissolve it, thereby separating cellulose and obtaining pulp for papermaking. During the bleaching process, it can adjust the pH value, improve the effect of bleaching agents, and make the paper achieve a higher whiteness.

Textile industry: In the textile printing and dyeing industry, caustic soda beads are used for desizing, scouring and mercerizing of cotton cloth. During the desizing process, it can remove the sizing on the fabric to facilitate subsequent dyeing and finishing; scouring can remove impurities in cotton fibers, improve the fiber's water absorption and dyeing properties; mercerizing can improve the gloss and strength of the fabric.

Chemical raw material production: It is an important raw material for the production of many other chemical products, such as sodium carbonate, sodium bicarbonate, chlor-alkali, etc. For example, sodium carbonate can be produced by reacting with carbon dioxide, and chlor-alkali products can be produced by reacting with chlorine. These products are widely used in many fields such as chemical industry, medicine, and food.

Sewage treatment: In sewage treatment, caustic soda beads are used to adjust the pH value of wastewater so that the wastewater reaches a suitable pH range for subsequent precipitation, filtration, biological treatment and other processes. At the same time, it can also react with some heavy metal ions in the wastewater to generate insoluble hydroxide precipitates, thereby achieving the purpose of removing heavy metal ions and reducing the degree of wastewater pollution.

Petroleum refining: During the petroleum refining process, caustic soda beads are used to remove acidic impurities in petroleum products, such as hydrogen sulfide, mercaptan, etc. This process is called alkaline washing, which can improve the quality of petroleum products, reduce corrosion to equipment, and reduce pollutant emissions generated by products during combustion.

Safety precautions

Corrosiveness: Caustic soda beads are extremely corrosive and can cause severe burns when in contact with human tissues such as skin and eyes. Therefore, protective gloves, goggles and other protective equipment must be worn during use. Once accidentally contacted with skin or eyes, rinse immediately with plenty of clean water and seek medical attention in time.

Storage conditions: Due to its hygroscopicity and corrosiveness, caustic soda beads should be stored in a dry, well-ventilated warehouse to avoid contact with humid air. At the same time, they should be stored separately from acids, flammables, organic matter, etc. to prevent chemical reactions from causing safety accidents such as fire or explosion.

Transportation requirements: During transportation, ensure that the packaging is intact to prevent leakage of caustic soda beads. The transportation vehicle should be equipped with appropriate fire-fighting equipment and leakage emergency treatment equipment. The transportation personnel must receive professional training and strictly abide by the transportation operating procedures.

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