2,2-dimethylbutane

Flammability

Link to relevant study record(s)

Reference

Endpoint:

flammable liquids: obsolete as covered by section 'Flash point'

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Up to 2008

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: GLP status not known, guideline not known, information from a published handbook, acceptable with restrictions.

Justification for type of information:

A discussion and report on the read across strategy is given as an attachment in IUCLID Section 13.

Reason / purpose for cross-reference:

read-across: supporting information

Qualifier:

no guideline followed

Principles of method if other than guideline:

The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.

GLP compliance:

no

Remarks:

literature

Conclusions:

The flammability limits of Iso-Hexane are 1.0 to 7.0 v% in air.

Executive summary:

The flammability limits of Iso-Hexane have been taken from the CRC Handbook (Lide, 2008). No information on the primary source of this data or the methods used is available. However, this information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Description of key information

This endpoint is not required for liquid substances as it is covered by flash point and autoflammability.

Data is available for Hydrocarbons, C6, isoalkanes, <5% n-hexane and Isohexane.

The upper and lower flammability ranges ofHydrocarbons, C6, isoalkanes, <5% n-hexaneare 1.0 and 7.4 % v/v. This range has been agreed by the consortium to represent the substance.

Key value for chemical safety assessment

Flammability:

flammable

Justification for classification or non-classification

There is no data available for 2,2 -Dimethylbutane. Data is available for Hydrocarbons, C6, isoalkanes, <5% n-hexane and Isohexane and this data is used for read across to 2,2 -Dimethylbutane.

 

Based on available read across data, 2,2 -Dimethylbutane warrants classification as Category 2 for flammability (H225) under the Regulation (EC) 1272/2008 on

classification, labelling and packaging of substances and mixtures (CLP).