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Administrative data

Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Remarks:
The appearance of the test item is described in a reliable study report on the physical-chemical properties of the substance. Since no guideline was followed and no details on the methods are given, the description is considered as reliable with restrictions.
Cross-reference
Reason / purpose for cross-reference:
reference to same study
Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
07 Jul 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
GLP compliance:
yes
Type of method:
method according to Siwoloboff
Key result
Decomposition:
yes
Decomp. temp.:
>= 160 °C

The results of the two repetitions were:

Number of repetition

Results of observation

1

The test item was colourless and transparent at 140 °C. The colour of test item changed from colourless to light orange at about 160 °C, and then changed gradually to orange until the temperature of test equipment reached 210 °C. Although continuous bubbles were observed at about 205 °C, this temperature was not judged as a boiling point of the test item because the colour of test item had already changed.

2

The test item was colourless and transparent at 140 °C. The colour of test item changed from colourless to light orange at about 160 °C, and then changed gradually to orange until the temperature of test equipment reached 210 °C. Although continuous bubbles were observed at about 205 °C, this temperature was not judged as a boiling point of the test item because the colour of test item had already changed.

 

Consequently, the boiling point of test item was not observed because the test item changed at about 160 °C.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report date:
2017

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
The description of the physical state of the substance was based on a visual inspection of the substance at room temperature and normal pressure
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Pyridine-2-carboxylic acid
EC Number:
202-719-7
EC Name:
Pyridine-2-carboxylic acid
Cas Number:
98-98-6
Molecular formula:
C6H5NO2
IUPAC Name:
pyridine-2-carboxylic acid

Results and discussion

Physical state at 20°C and 1013 hPa:
solid
Form / colour / odour
Key result
Form:
solid: particulate/powder
Colour:
White
Substance type:
organic

Applicant's summary and conclusion

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