Changzhou Junchi Chemical Co., Ltd.

Para toluene sulfonamide

Synonyms: 4- Chinese toluenesulfonamide; 4- methyl benzene sulfonamide sulfonamide; of; p-toluenesulfonamide (PTSA); p-toluenesulfonamide; toluene sulfonamide -4-; toluene sulfonamide; of toluene sulfonamide

English Name: p-Toluenesulfonamide

English synonyms: 4-methyl-benzenesulfonamid; 4-Toluenesulfanamide; Benzenesulfonamide, 4-methyl-; Benzenesulfonamide, 4-methyl-; para-toluenesulfamine; para-Toluenesulfonamide; p-Methylbenzenesulfonamide; p-Toluenesulfamide

CAS: 70-55-3

Molecular formula: C7H9NO2S

Molecular weight: 171.22

EINECS: 200-741-1

Related categories: SULFONAMIDE FINE; Chemical & INTERMEDIATES; Organic Building Blocks; Sulfonamides/Sulfinamides Sulfur; Compounds; electroplating chemicals; chemical additives; aromatic hydrocarbons; Bioactive Small Molecules; Building Blocks; Cell Biology; Chemical Synthesis; Organic Building Blocks; Sulfur Compounds; T; organic building blocks; dyes; sulfonation; pharmaceutical intermediates; pharmaceutical intermediate; organic chemical; Isoquinolines, Quinolines, Quinaldines; pharmaceutical raw materials; chemical reagents; sulfonamides; sulphenamide

Mol file: 70-55-3.mol

Properties of p-toluene sulfonamide

Melting point 134-137 degree C (lit.)

The boiling point is 221 C (10 mmHg)

Flash point 202 C

Storage conditions Store below +30 degrees C.

Solubility DMSO: soluble

Morphological Crystalline Powder

Color White

Water solubility was 0.32 g/100 mL (25 o C)

BRN 472689

CAS database 70-55-3 (CAS DataBase Reference)

NIST chemical information 4-Methylbenzenesulfonamide (70-55-3)

EPA chemical information Benzenesulfonamide, 4-methyl- (70-55-3)

Application and synthesis method of p-toluene sulfonamide

Action and use p-toluenesulfonamide with excellent solid thermosetting plastic plasticizer, suitable for phenolic resin, melamine resin, urea formaldehyde resin and polyamide resin etc.. A small amount of matching can improve the processability, make the curing uniform, and give the product a good luster. There is no liquid plasticizer softening effect, and it is incompatible with polyvinyl chloride and vinyl chloride copolymer, and is compatible with cellulose acetate, cellulose acetate butyrate and nitrocellulose. The toxicity of toluene sulfonamide is low, and the food and drug administration is permitted to be used as adhesive in food packaging materials. P-toluenesulfonamide TSH, commonly used as brightener, to improve the structure of the coating by adsorption on the electrode, the surface gloss can have effects to some extent, join this kind of brightener dosage is generally less restrictive, but also affect the characteristics of the coating is also lighter, but only half the brightness of the coating obtained by however, surface gloss and polishing effect before plating substrate. At present, most brighteners used in nickel plating are some organic compounds, and the amount of these organic compounds is very little, and the effect is remarkable. In addition to bright coating, the mechanical properties and chemical properties of the coating can be largely determined. But we must see, because in bright nickel plating bath was added in the organic compound brightener, naturally the nickel layer more organic inclusion and sulfur and other impurities, the internal stress increases inevitably, so the mechanical properties to be worse than the ordinary nickel plating layer, the crack is prone to stress, anti rust ability is better than some dark nickel. Therefore, a single layer of bright nickel can not improve the corrosion resistance and mechanical properties of the nickel layer, and it is necessary to form a protective coating with double layers and multi layers of nickel or chromium. When the toluene sulfonamide is heated to 105 DEG C and decomposed to nitrogen (130mL/g), the foaming agent is fine, the product shrinkage is small, the tear strength is high and the stability is good. Therefore, the application range is wide. The above information is edited by Yuri Huang of Chemicalbook.

Chemical properties of white flake crystals. Soluble in ethanol, insoluble in water and ether.

It is used to make dyes, plasticizers, synthetic resins, coatings, disinfectants and wood processing brighteners

It is used in the manufacture of plasticizers, disinfectants, and also for the production of synthetic resins, coatings, fluorescent dyes, etc..

Application as primary brightener in bright nickel plating. It is used for bright multi layer nickel plating to make the coating bright and uniform. The average dosage is 0.2 ~ 0.3 g/L.

It is used in the manufacture of dyes, plasticizers, resins, coatings, disinfectants (chloramine T), wood processing brighteners, etc..

Uses are used as plasticizers, as well as for the synthesis of organic compounds, resins and saccharin

Fungicides and fungicides for organic synthesis, plasticizers, resins and coatings.

The production method is obtained by reacting p-toluene sulfonyl chloride with ammonia water.

In the production process, part of HN3 water was added into the reaction pot and stirred with toluene sulfonyl chloride. The temperature rose to above 50 degrees, and then the residual ammonia was added after the temperature was decreased. The reaction was 0.5 h at 85~90 oc. End reaction at pH 8~9. Cold to 20 degrees, filtration, filter cake washed, coarse products. And then activated carbon decolorization, alkali dissolution, acid analysis, filtration, drying products.