Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

Para-toluenesulfonamide (PTSA) is an almost odourless white organic crystalline solid.

The melting point of para toluene sulphonamide is 136.8 °C.

Boiling point: Degradation starts at 187°C.

The relative density is 1.358 .

Granulometry: Light microscopic examination revealed that the shape of the product is non-fibrous. By sieving 4.3 %m/m is < 100 µm.

The characteristics of the PSD of the fraction < 100 µm are: d10: 26µm, d50: 69µm and d90:123µm.

The estimated vapour pressure of p-Toluenesulfonamide is <0.000286 Pa at 20°C.

The measured partition coefficient log Kow value for para-toluenesulfonamide is 0.6.

The watersolubility of para-toluenesulfonamide is 3.1 g/L at 20°C and a pH=6.5.

The surface tension at a concentration of 1g/L and at 20 Degrees Celcius was 69.5 mN/m.

p-Toluenesulfonamide is non flammable, non explosive and is not considered as an oxidizing substance.

According to the criteria in the UN Standard aqueous PTSA should be classified as non-corrosive.

Toluene-4-sulphonamide shall not be considered for classification as self-reactive substance according to EC Regulation No 1271/2008 (CLP).