High quality Sodium 3-nitrobenzenesulphonate cas 127-68-4

High quality Sodium 3-nitrobenzenesulphonate cas 127-68-4

Sodium 3-nitrobenzenesulfonate is a reagent in the synthesis of azetidinyl ketolides for treatment of susceptible and multidrug resistant community-acquired respiratory tract infections.

Physicochemical properties

Appearance and traits: gray to yellow powder
Density: 1.637g/cm3
Melting point: 350 °C
Boiling point: 215 – 219oC
Flash point: 100 °C
Water solubility: 200 g/L (20 oC)
Stability: Stable. Hygroscopic. Incompatible with strong oxidizing agents. Storage conditions: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.

use

It is a dye intermediate, used as a color-protecting agent for vat dyes, sulfur dyes, dyes and dyes, and can be used as a rust inhibitor and electroplating nickel-removal agent for ships.

production method

In the enamel kettle, first add 350 parts of fuming sulfuric acid, control the kettle temperature 0 ~ 5 °C, slowly add nitrobenzene under stirring, add 132 parts of nitrobenzene in 1h after the kettle temperature is raised to 100 °C, insulation 2h. Samples were taken to determine the sulfonation end point (1 to 2 drops of material were dropped into a 10 ml test tube filled with clean water and no turbidity was demonstrated until the end point). After the sulfonation reaction is completed, it is cooled, slowly added to ice water, and added in about 3 hours.
2 000 parts of salt, salting out several hours later, standing overnight, suction filtration, pressure drying, intermediates between nitrobenzene sulfonic acid. Into 500 parts of hot water, m-nitrobenzene sulfonic acid was boiled and dissolved. Remove a small amount of sulfone. Add 50 parts of soda ash to neutralization and then add active carbon to decolorize. Heat and filter. The filtrate is cooled and crystallized. The filter cake is washed with a small amount of water and dried at below 50°C to obtain the finished product.

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Product expansion

1> Cosmetic Raw Materials: Cosmetics is a variety of raw materials through a reasonable deployment of processing from the compound mixture. Cosmetics with a wide range of raw materials, different performance. According to the Raw Material properties and uses of cosmetics, can be divided into matrix materials and auxiliary raw materials in two categories.

2> Active Pharmaceutical Ingredients(API): API refers to the raw materials in the production of various types of preparations, which is the active ingredient in powder,crystal and paste for medicine use through chemical synthesis,plant extract, and preparations of biotechnology institute.

3> Fragrance And Spices: Spices are an important part of fine chemicals, it is composed of natural spices, synthetic spices and single fragrance.

4> Organic Raw Material: Intermediates are also known as organic intermediates. The use of coal tar or petroleum products as raw materials to produce dyes, resins, additives, and other intermediates.

5> Chemicals Used In Paints: Paint, the traditional Chinese name is paint. So-called coating is coated on the surface of the object that be protected or be adornment, and with the continuous film coating to form strong adhesion.

6> Pharmaceutical Intermediates: The so-called pharmaceutical intermediates, refers to the production of pharmaceutical products in the process, the use of raw materials, materials, accessories and other intermediate products.

7> Agricultural Chemicals: Research and agriculture related chemical, including pesticide, plant growth regulator, fertilizer, compound fertilizer, herbicide etc.