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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
September 2011
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
Study performed according to international guidelines but not under GLP and with some lack of details.
Reason / purpose for cross-reference:
reference to other study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
no
Type of method:
method to determine freezing temperature
Key result
Melting / freezing pt.:
< -20 °C
Atm. press.:
ca. 1 atm
Decomposition:
no
Sublimation:
no

After twelve hours of storage in a freezer at - 20°C the test item was still liquid.

According to Annex VII of REACH (column 2 of section 7.2), the study does not need to be conducted below a lower limit of - 20°C. Therefore no main study was performed and the determination was terminated.

Conclusions:
No freezing point or range could be detected.
The freezing point of nopyl acetate was stated as < - 20°C.
Executive summary:

A study was planned to determine the melting point of nopyl acetate in accordance with EU Method A.1 and OECD Guideline No 102.

In the preliminary study, the test item was still not frozen after twelve hours of storage in a freezer at - 20°C. According to Annex VII of REACH (column 2 of section 7.2), no main study was performed. The freezing point or range of nopyl acetate was stated as < - 20°C.

No observations were made which might cause doubts on the validity of the study outcome. Therefore, the result of the study is considered valid.

Description of key information

In a preliminary study, the test item was still not frozen after twelve hours of storage in a freezer at - 20°C. Therefore, according to Annex VII of REACH (column 2 of section 7.2), no main study was performed. 
The freezing point or range of nopyl acetate is < - 20°C.

Key value for chemical safety assessment

Additional information

Key study conducted according to OECD 102 Guideline and EU Method A.1. The result is scientifically acceptable but not obtained under GLP.

Therefore a reliability of 2 (reliable with restrictions) is assigned.