Reaction Mass of hydrogen bis[4-[4,5-dihydro-4-[(2-hydroxy-5-nitrophenyl)azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]benzene-1-sulphonato(3-)]ferrate(3-) and trisodium bis[4-[4,5-dihydro-4-[(2-hydroxy-5-nitrophenyl)azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]benzene-1-sulphonato(3-)]ferrate(3-)

Flash point

Link to relevant study record(s)

Reference

Endpoint:

flash point of flammable liquids

Data waiving:

study technically not feasible

Justification for data waiving:

the study does not need to be conducted because the flash point is only relevant to liquids and low melting point solids

Reason / purpose for cross-reference:

data waiving: supporting information

Description of key information

Based on EU method A.9, the flash-point is the lowest temperature, corrected to a pressure of 1013 hPa, at which a liquid evolves vapours, under the conditions defined in the test method, in such an amount that a flammable vapour/air mixture is produced in the test vessel. The substance is a solid powder at 25°C and 1013 hPa. In a DSC measurement up to 450°C, no melting is observed.