4-nitrosophenol

Explosiveness

Administrative data

Endpoint:

explosive properties of explosives

Data waiving:

study technically not feasible

Justification for data waiving:

the study does not need to be conducted because the substance is an organic substance or mixture containing chemical groups associated with explosive properties, but the exothermic decomposition energy is less than 500 J/g and the onset of exothermic decomposition is below 500°C

other:

Justification for type of information:

The substance is self-reactive and degrades exothermically.

Cross-reference

Reason / purpose for cross-reference:

data waiving: supporting information

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Justification for type of information:

Performed to guidline, but limited detail reported
Various secondary sources of data suggest thermal degradation prior to melting, with instability starting at 100 - 120 C and reported melting temperatures between ca 110 and 135 C. The precise melting temperature is academic in view of thermal instability and the self-reactivity of the substance.

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Principles of method if other than guideline:

Thermogravimetric methods used to demonstrate initial degradation prior to melting for a range of phenol derivatives

GLP compliance:

yes

Type of method:

hot stages

Specific details on test material used for the study:

No details

Melting / freezing pt.:

ca. 133 °C

Atm. press.:

ca. 1 atm

Decomposition:

yes

Decomp. temp.:

> 120 °C

The testing laboratory did not record any observations, but various sources of data suggest decomposition will start at > 120 C

Conclusions:

A result of 133 C was obtained from recent testing.
A primary research reference was found demonstrating thermal instabilty from 118 C
Various secondary sources of data suggest thermal degradation prior to melting, with instability starting at 100 - 120 C and reported melting temperatures between ca 110 and 135 C. The precise melting temperature is academic in view of thermal instability and the self-reactivity of the substance.