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p-Toluenesulfonamide

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p-Toluenesulfonamide Basic information
Role and purpose Chemical Properties Application Production methods
Product Name:p-Toluenesulfonamide
Synonyms:4-methyl-benzenesulfonamid;4-Toluenesulfanamide;Benzenesulfonamide, 4-methyl-;Benzenesulfonamide,4-methyl-;para-toluenesulfamine;para-Toluenesulfonamide;p-Methylbenzenesulfonamide;p-Toluenesulfamide
CAS:70-55-3
MF:C7H9NO2S
MW:171.22
EINECS:200-741-1
Product Categories:SULFONAMIDE;FINE Chemical & INTERMEDIATES;Organic Building Blocks;Sulfonamides/Sulfinamides;Sulfur Compounds;Bioactive Small Molecules;Building Blocks;Cell Biology;Chemical Synthesis;Organic Building Blocks;Sulfur Compounds;T;pharmaceutical intermediate
Mol File:70-55-3.mol
p-Toluenesulfonamide Structure
p-Toluenesulfonamide Chemical Properties
mp 134-137 °C(lit.)
bp 221 °C (10 mmHg)
Fp 202 °C
Water Solubility 0.32 g/100 mL (25 º C)
BRN 472689
CAS DataBase Reference70-55-3(CAS DataBase Reference)
NIST Chemistry Reference4-Methylbenzenesulfonamide(70-55-3)
EPA Substance Registry SystemBenzenesulfonamide, 4-methyl-(70-55-3)
Safety Information
Hazard Codes Xi,Xn
Risk Statements 36-20/21/22
Safety Statements 26-36
WGK Germany 1
RTECS XT5075000
PackingGroup III
HS Code 29350090
Hazardous Substances Data70-55-3(Hazardous Substances Data)
MSDS Information
ProviderLanguage
4-Methylbenzenesulfonamide English
SigmaAldrich English
ACROS English
ALFA English
p-Toluenesulfonamide Usage And Synthesis
Role and purposeP-toluene sulfonamide is a kind of excellent solid plasticizer used for thermoset plastic. It is suitable for being applied to phenolic resin, melamine resin, urea-formaldehyde resins and polyamide resins. Combination with a small amount can improve workability and make the solidification be uniform, and thus endowing the products with a good gloss. However, P-toluene sulfonamide has no softening effect as the liquid plasticizer, and is incompatible with polyvinyl chloride and vinyl chloride copolymer and is partially compatible with cellulose acetate, cellulose acetate butyrate and cellulose nitrate.
p-Toluene sulfonamide has a low toxicity. It has been approved by the US Food and Drug Administration for being applied into adhesives as food packaging materials.
p-Toluene sulfonamide is briefly called TSH and is commonly used for nickel plating. It can improve the coating structure by the adsorption on the electrode so that it has some degree of surface glossing effect; it is generally not strictly limited for the added amount of brighteners lax; moreover it also has very light effects on the coating characteristics. However, it can only give semi-bright coatings, and the surface gloss is related to the polishing quality of the matrix before plating.
Currently, the brightener agents of nickel plating used is mostly some kinds of organic compounds. And the used amount of these organic compound, although are very little, but with a significant effect. In addition to brightening the coating, it can also largely determine the mechanical properties and chemical properties of the coating. But it must be realized that, since the bright nickel plating solution has been added to the organic brightener, it naturally makes the nickel plating layer contain a relative big amount of organic sulfur and other impurities, thus inevitably enlarging the internal stress, so its mechanical properties is a bitter lower than the conventional nickel-plate, and is prone to crack layer when the plating gets stress; its antirust ability is also worse than the dark nickel. Thus, a single layer of bright nickel is unable to improve the corrosion resistance and mechanical properties of the nickel layer; it must need to form a bi-layer and multilayer nickel or chromium to form a multilayer combination of decorative protective coatings.
When toluene sulfonamide is heated to 105 °C, it will be decomposed and there will be nitrogen released (gas evolution 130 mL/g); p-toluene sulfonamide foaming agents can give a fine foaming with small product shrinkage. It also has a high tear strength and good stability. Thereby, it has a wide range of applications.
The above information is edited by the chemicalbook of Dai xiongfeng.
Chemical PropertiesIt is white flaky crystal. It is soluble in ethanol but insoluble in water and ether.
Application1. It is used in the manufacture of dyes, synthetic resins, paints, disinfectants and wood processing brightener.
2. It is used for the manufacture of plasticizers, disinfectants; it can also be used for the production of synthetic resins, paints, and fluorescent dyes.
3. It can be used as primary brightener in the bright nickel plating. It is sued for bright nickel plating for multilayer to obtain uniform bright coating. It has a commonly used amount of 0.2 ~ 0.3 g / L.
4. It can be used as plasticizers, also used for synthesis of organics, resins and saccharin.
Production methodsIt is obtained by the reaction between toluenesulfonyl chloride and ammonia.
First, add part of HN3 water into the reaction pot, stirring for adding p-toluenesulfonyl chloride with the temperature rising naturally to above 50 °C; after the temperature has dropped, add the remaining ammonia and have reaction for 0.5 h at 85 ~ 90 °C. Stop the reaction when the pH reaches 8 to 9. Cool to 20 °C, filter, and wash the filter cake with water to obtain the crude. Then further go through bleaching via activated carbon, alkali dissolution, acid precipitation, rejection filter, drying to get products.
Chemical Propertieswhite crystalline powder
Usage4-Tolylsulfonamide is a carbonic anhydrase inhibitor used the synthesis of antiglaucoma and anticancer drugs.
UsageUsed in the manufacture of plasticizer, disinfectant, fungicide, fungicides, wood brightener. Also can be used in the production of synthetic resin, the coating, the fluorescent dye, pharmaceutical, etc.
Tag:p-Toluenesulfonamide(70-55-3) Related Product Information
2,4,6-TRIMETHYLBENZENESULFONYL HYDRAZIDE Tosyl isocyanate TPCK 1-[(4-Methylphenyl)sulfonyl]-1H-imidazole 4-Methylbenzenesulfonhydrazide Tosylmethyl isocyanide METHYLSTYRENE TRIFLUOROMETHANESULFONAMIDE Toluene 2-Carbomethoxybenzenesulfonamide Toluenesulfonamide 4-Methylphenylsulfonylurea Tosyl chloride Benzenesulfonamide Methanesulfonamide Cyclopropanesulfonamide Sulfanilamide p-Toluenesulfonamide