Chemical Appearance
– A 30% sodium hydroxide solution is typically a clear, colorless liquid.
– It is viscous and has a slippery feel due to its strong alkaline nature.
– Being hygroscopic, it can absorb moisture and carbon dioxide from the air, which may cause the – solution to appear cloudy over time.
Chemical Application
– Chemical Manufacturing: Sodium hydroxide is used in the production of various chemicals, including soaps, rayon, paper, explosives, dyestuffs, and petroleum products.
– Soap and Detergent Production: It is a key ingredient in the saponification process to produce soap. It’s also used in the manufacture of anionic surfactants, a crucial component in detergents.
– Paper Industry: In papermaking, sodium hydroxide is used in the pulping process of turning wood into pulp, which is then used to make paper.
– Water Treatment: It’s used to adjust pH levels in water treatment facilities to neutralize acid water.
– Food Processing: In the food industry, it is used in the processing of foods like olives, or for washing or peeling fruits and vegetables.
– Textile Industry: Sodium hydroxide is used in the textile industry for processes like scouring, bleaching, and desizing fabrics.
– Petroleum Products: It’s used in the refining of petroleum products and in the extraction of tar sands.
Specification
inspecting item | Standard requirements | The measured results |
content,% | ≥30.0 | 30.5 |
surface | Colorless, clear, thick liquid | Colorless, clear, thick liquid |
soda,% | 0.2 | <0.2 |
sodium chloride,% | Lull 0.008 | <0.008 |
ferric oxide,% | Lull 0.001 | <0.001 |
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