P-Toluenesulfonamide CAS 70-55-3 is an organic compound with the molecular formula C7H9NO2S. It is a white flake or leaf shaped crystal. Flammable. Soluble in ethanol, insoluble in water and ether. The melting point is 138.5~139 ℃, and the melting point of hydrates is 105 ℃. Used for synthesizing chloramine T and chloramphenicol sulfamate, fluorescent dyes, manufacturing plasticizers, synthetic resins, coatings, disinfectants, and wood processing brighteners.

Chinese name: p-Toluenesulfonamide

Foreign name: p-Toluenesulfonamide

Nickname: 4-Toluenesulfonamide; Toluene-4-sulfonamide; Sulfamoyl toluene, PTSA; P-Toluenesulfonamide

Chemical formula: C7H9NO2S

Molecular weight: 171.22

CAS login number: 70-55-3

EINECS login number: 200-741-1

Melting point: 138.5 to 139 ℃

Boiling point: 183.5 ℃

Water solubility: difficult to dissolve in water, solubility 0.32 g/100 mL (25 ℃)

Density: 1.271 g/cm ³

Appearance: White flake or leaf shaped crystals

Flash point: 148.6 ℃

Application: Synthesis of chloramine T and chloramphenicol sulfamate, fluorescent dyes, manufacturing plasticizers, synthetic resins, coatings, disinfectants, and wood processing brighteners

Application area

Used for organic synthesis. P-Toluenesulfonamide is mainly used for the synthesis of chloramine-T and sulfamethoxazole.

Used for synthesizing fluorescent dyes, manufacturing plasticizers, synthetic resins, coatings, disinfectants, and wood processing brighteners.

Mainly used as a toughening agent for synthesizing water-soluble melamine formaldehyde resin.

Used as a primary brightener in bright nickel plating. Used for bright multi-layer nickel plating to make the coating bright and uniform. The general dosage is 0.2-0.3g/L.

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