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27

2023-12

The Functions and Applications of Sodium Hydroxide

Sodium hydroxide can convert hydrogen sulfide into sodium sulfate or potassium sulfate, thereby achieving deodorization. It can be used in wastewater treatment and also in the treatment of exhaust gases.

2023-12-27

The Functions and Applications of Sodium Hydroxide

27

2023-12

The Role of Industrial Glucose

1. In the pharmaceutical field, it is used to regulate the acid-base balance in the human body, thereby restoring normal nerve function. For the same purpose, it is also used as a food additive. 2. It serves as a water stabilizer, and its superior performance is evident in the following aspects:

2023-12-27

27

2023-12

When transporting and storing sodium hydroxide, please observe the following precautions.

1. Packaging: Sodium hydroxide should be stored in sealed, corrosion-resistant containers, typically using suitable containers such as plastic drums or glass bottles. The packaging material should have good corrosion resistance and sealing properties to prevent contact with external air or moisture.

2023-12-27

27

2023-12

Sodium Hydroxide Water Treatment for Pollution Control

For sodium hydroxide leaks into water, appropriate measures should be taken based on the estimated leakage amount and the characteristics of the water body. Depending on the water body’s environment and the monitored pH levels, determine whether to add acid for neutralization and, if so, how much, as well as how much water to add for dilution. Analytical Methods The determination of sodium hydroxide concentration typically uses acid-base neutralization titration, with methyl orange as the indicator. Titrate with a standard hydrochloric acid solution until the color changes from yellow to orange, indicating the endpoint. Neutralization of Sulfate-Contaminated Water Concentrated sulfuric acid should be diluted before being added. The minimum amount of sulfuric acid required to neutralize sodium hydroxide can be calculated using the formula y = 125.07x, where y is the mass of concentrated sulfuric acid to be added (98% concentration), and x is the mass of sodium hydroxide leaked (x = ωm, where ω is the mass fraction of the leaked sodium hydroxide, and m is the mass of the leaked sodium hydroxide). Neutralization of Hydrochloric Acid-Contaminated Water Concentrated hydrochloric acid should be diluted before being added. The minimum amount of hydrochloric acid required to neutralize sodium hydroxide can be calculated using the formula y = 303.77x, where y is the mass of concentrated hydrochloric acid to be added (30% concentration), and x is the actual mass of sodium hydroxide leaked (x = ωm, where ω is the mass fraction of the leaked sodium hydroxide, and m is the mass of the leaked sodium hydroxide).

2023-12-27

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