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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Physical & Chemical properties


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other: crystal density
Type of information:
experimental study
Adequacy of study:
key study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Information contained in an authoritative, standard reference work in industrial chemistry. The author was employed at the Amoco Chemical Company, with direct access to company data/information relevant to the commercial production of terephthalic acid.
Reason / purpose for cross-reference:
reference to same study
no guideline followed
Principles of method if other than guideline:
Procedure not stated
GLP compliance:
not specified
Type of method:
other: procedure not stated
other: crystal density
1.58 g/cm³
25 °C
Remarks on result:
other: Source specifies crystal density, which implies the sample used for the measurement excluded powder/dust.
The crystal density of terephthalic acid is 1.58 g/cm3 at 25 degrees C.

Description of key information

The crystal density of terephthalic acid is 1.58 g/cubic cm at 25 degrees C.  The specific gravity of terephthalic acid is 1.522 at 25 degrees C.

Key value for chemical safety assessment

Additional information