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[Chemical Knowledge]：Properties and Uses of Sodium Isophthalic Acid -5-Sulfonate

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Sodium isophthalate -5-sulfonate (also known as sodium 5-sulfoisophthalate) is an important organic chemical raw material, which is widely used in dyes, pharmaceuticals, pesticides, detergents and other fields. It has some unique properties that make it important in the field of raw materials for chemical production.

1. The properties of sodium isophthalic acid -5-sulfonate

1. Physical properties: sodium isophthalic acid -5-sulfonate is a white or slightly yellow crystalline powder with good thermal stability, Not easy to burn, not easy to explode. It is insoluble in water, but easily soluble in hot lye, with high chemical stability.

2. chemical properties: isophthalic acid -5-sulfonic acid sodium has strong acidity, can react with alkali to generate the corresponding salt. At the same time, it also has good reducibility and sulfonation, and can undergo substitution reactions and addition reactions with many compounds.

2. The use of sodium isophthalic acid -5-sulfonate

1. Dye field: Sodium isophthalic acid -5-sulfonate is an important intermediate for many dyes, such as for the production of direct dyes, acid dyes, mordant dyes, etc. It can react with aniline, aminobenzenesulfonic acid and other compounds to generate dyes of various colors.

2. pharmaceutical field: isophthalic acid -5-sodium sulfonate can be used to produce some drugs, such as sulfonamides. These drugs have antibacterial and anti-inflammatory effects, and are widely used in clinical treatment.

3. Pesticide field: Sodium isophthalic acid -5-sulfonate can also be used to produce some pesticides, such as fungicides, insecticides, etc. These pesticides play an important role in the control of crop diseases and insect pests.

4. detergent field: sodium isophthalic acid -5-sulfonate has good surface activity and can be used to produce some detergents, such as washing powder, laundry detergent, etc. These detergents have better detergency and foam performance.

In conclusion, as an important organic chemical raw material, sodium isophthalic acid -5-sulfonate has a wide range of applications in dyes, pharmaceuticals, pesticides, detergents and other fields. Understanding its nature and use is of great significance to the development and application of raw materials for chemical production.

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