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Physical & Chemical properties

Endpoint summary

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Description of key information

p-TSH is a white solid at room temperature (the median particle size of the test substance was 25.60242 (μm) and the mean size 28.74505 (μm)). It has the following chemical-physical properties:

Melting temperature: 110oC

Boiling temperature: Decomposes

Relative density: 1.298

Vapor pressure at 20oC: 3.9E-6 Pa

It is considered a non-flammable solid. It starts to melt and decompose at about 105 -110oC releasing primarily the non-flammable nitrogen (N2) and water.


The self-reactive properties of toluene-4-sulphonohydrazide tested according to UN Test Series A to H described in Part II of the UN RTDG, Manual of Tests and Criteria (BAM, 1992, results provided in confidential Annex of CLH report, fulfil the criteria for classification self-reactive substance TYPE D).

Additional information