Carboxylic acids, di-, C4-6

Henry's Law constant

Link to relevant study record(s)

Reference

Endpoint:

Henry's law constant

Type of information:

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

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

accepted calculation method

Principles of method if other than guideline:

Calculated from water solubility and vapour pressure

H:

0.062 Pa m³/mol

Temp.:

25 °C

Conclusions:

The Henry's Law Constant of 0.0616 Pa m³/mol for adipic acid is estimated from the ratio of its vapour pressure to its water solubility at a temperature of 25 °C.

Executive summary:

The Henry's Law Constant of 0.0616 Pa m³/mol for adipic acid is estimated from the ratio of its vapour pressure to its water solubility at a temperature of 25 °C.

Description of key information

The Henry's Law Constant of 0.0616 Pa m³/mol for adipic acid is estimated from the ratio of its vapour pressure to its water solubility at a temperature of 25 °C (Currenta, 2009).

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):

0.062

at the temperature of:

25 °C

Additional information

For the mixture no data on volatility from water are available. Adipic acid is applied for read-across approach.

The distribution of dicarboxylic acids between aqueous solutions and air is described by the Henry´s law constant of adipic acid.

The Henry's Law Constant of 0.0616 Pa m³/mol for adipic acid is estimated from the ratio of its vapour pressure to its water solubility at a temperature of 25 °C (Currenta, 2009) indicating a low rate of volatilisation from surface water.

Based upon the similarity to the physico-chemical properties of each constituent, it is concluded that the dicarboxylic acids are essentially non-volatile from surface waters.