Registration Dossier

Administrative data

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Experimental period 05 December 2017 to 07 December 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report Date:
2018

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling Point)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Details on test material:
Identity: 1,5-Dinitronaphthalene
CAS number: 605-71-0
EC number: 210-095-2
Formula: C10H6N2O4
Molecular weight (g mol-1): 218.17
Specific details on test material used for the study:
Identification: 1,5 DINITRONAPHTHALENE
Appearance: Pale yellow powder
Batch: 160503 (taken from label)
Purity/Composition: 100%
Test item storage: At room temperature
Stable under storage conditions until: 16 May 2022 (expiry date)

Results and discussion

Boiling point
Key result
Boiling pt.:
ca. 375.7 °C
Atm. press.:
>= 1 026 - <= 1 030 hPa
Decomposition:
ambiguous
Remarks:
Not specified, colour change observed

Any other information on results incl. tables

An endothermic peak was observed between 200°C and 225°C. The endothermic effect was due to melting of the test item. An endothermic peak was observed between 300°C and 375°C. The extrapolated onset temperature of the peak was not determined since the test item most likely evaporated before the boiling temperature was reached. The endothermic effect was most likely obtained due to boiling of the test item. 

After the experiment, a dark brown deposit remained in the sample container.

In order to investigate the boiling peak, a higher heating rate of 50°C/minute was used in the Experiment 2. The extrapolated onset temperature was 379.804°C. The endothermic peak had not shifted significantly to higher temperatures. It demonstrated that boiling of the test item caused the endothermic effect. After the experiment, a dark brown deposit remained in the sample container.

In order to determine the boiling temperature, a higher amount of test item was applied in the Experiment 3. Theextrapolated onset temperature was 375.364°C. After the experiment, a dark brown deposit remained in the sample container.

Experiment 4 was performed as a duplicate of Experiment 3. Similar results as in Experiment 3 were obtained. The extrapolated onset of the boiling peak was 375.983°C. After the experiment, a dark brown deposit remained in the sample container.

The boiling temperature was determined as the mean boiling temperature of Experiment 3 (375.364°C) and Experiment 4 (375.983°C).

The boiling temperature ofthe test itemwas 375.7°C (648.8K).

The atmospheric pressure was 1028 ± 2 hPa.

Applicant's summary and conclusion

Conclusions:
The boiling temperature of 1,5 DINITRONAPHTHALENE was determined by DSC.
The boiling temperature of the test item was 375.7°C (648.8K).
The atmospheric pressure was 1028 ± 2 hPa.
Executive summary:

The boiling temperature of1,5 DINITRONAPHTHALENEwas determined by DSC.

The boiling temperature ofthe test itemwas 375.7°C (648.8K).

The atmospheric pressure was 1028 ± 2 hPa.