Hydrocarbons, C9-C11, n-alkanes, isoalkanes,

Melting point / freezing point

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2007

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Remarks:

Acceptable, well-documented study report which meets basic scientific principles. No GLP lab.

Qualifier:

according to guideline

Guideline:

other: ASTM D 97

GLP compliance:

no

Remarks:

No GLP certified lab

Type of method:

pour point

Melting / freezing pt.:

< -50 °C

Atm. press.:

1 atm

Decomposition:

no

Sublimation:

no

Conclusions:

The measured pour point according to ASTM D 97 is below -50°C.

Executive summary:

The measured pour point according to ASTM D 97 is below -50°C.

Reference 2

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

2010

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

accepted calculation method

Remarks:

Data extrapolated from C10-C13, n-alkanes, isoalkanes, cyclics, <2% aromatics

Qualifier:

according to guideline

Guideline:

other: ASTM D 5950

Principles of method if other than guideline:

Data extrapolated from C10-C13, n-alkanes, isoalkanes, cyclics, <2% aromatics

GLP compliance:

no

Remarks:

read across

Type of method:

pour point

Remarks:

read across data

Melting / freezing pt.:

<= -72 °C

Atm. press.:

1 atm

Decomposition:

no

Sublimation:

no

Conclusions:

Pour point of the substances is -72°C according to ASTM D 5950 methodology.

Executive summary:

Pour point of the substances is -72°C according to ASTM D 5950 methodology.

Reference 3

Endpoint:

melting point/freezing point

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Justification for type of information:

1. Hypothesis for the analogue approach:
The hypothesis for the analogue approach is that both the registration substance, Hydrocarbons, C9-C11, n-alkanes, isoalkanes, <2% aromatics (target substance), and the test substances, Hydrocarbons, C8-C11, n-alkanes, isoalkanes, <2% aromatics (source substance) and Hydrocarbons, C9-C12, n-alkanes, isoalkanes, <2% aromatics (source substance), are produced from the same Fischer-Tropsch substance, GTL Gasoil, by fractional distillation. The substances are members of the C9-C14 Aliphatics [≤2% Aromatics] Hydrocarbon Solvents Category.
The source substances contain the all of the constituents of the target substance. The substances have constituents that are part of the same homologous series and have many constituents in common. The substances therefore have qualitatively similar properties (RAAF Scenario 2 applies).

2. Source and target chemical(s)
The source substance Hydrocarbons, C9-C11, n-alkanes, isoalkanes, cyclics, <2% aromatics is composed of linear, branched and cyclic hydrocarbons of chain length C9-C11
The source substance Hydrocarbons, C10-C13, n-alkanes, isoalkanes, cyclics, <2% aromatics, is composed of linear, branched and cyclic hydrocarbons of chain length C9-C12
The target substance, Hydrocarbons, C9-C11, n-alkanes, isoalkanes, <2% aromatics, is composed of linear, branched and cyclic hydrocarbons of chain length C9-C11.

3. Analogue approach justification
The constituents of the source and target substances are all hydrocarbons. Identical constituents have identical physicochemical profiles. The source substances cover the full carbon chain length of the target substance. The main difference between source and target substances is that the target has lower concentrations of cyclic constituents than the source substances.

Reason / purpose for cross-reference:

read-across source

Reason / purpose for cross-reference:

read-across: supporting information

Melting / freezing pt.:

< 50 °C

Atm. press.:

1 atm

Decomposition:

no

Sublimation:

no

Melting / freezing pt.:

<= -72 °C

Atm. press.:

1 atm

Decomposition:

no

Sublimation:

no

Description of key information

Pour point of the substance is below -20°C.

Additional information

According to REACH legislation, Annex VII, 7.2, Column 2, a study on melting/freezing point does not need to be conducted as the melting/freezing point of the substance is below the lower limit of -20°C. A pour-point value of <-50°C was determined for Hydrocarbons, C9-C11, n-alkanes, isoalkanes, cyclics, <2% aromatics. This is read across to the submission substance.