Carboxylic acids, di-, C4-6

Vapour pressure

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Principles of method if other than guideline:

Value for 25°C was calculated from coefficients for vapour pressure equation.

GLP compliance:

not specified

Type of method:

other: extrapolated

Temp.:

25 °C

Vapour pressure:

0 hPa

The value for 25 °C (298 K) is calculated with the following equation (in
appendix C: Coefficients for vapour pressure equation):
log P = A + B/T + C log T + D T + E T² (P - mm Hg, T - K),
where A = 109.3324
      B = -9.6083e+03
      C = -3.4494e+01
      D =  9.0733e-03
      E =  1.4829e-12
  log P = -5.5419 (mm Hg)
  

Conclusions:

The vapour pressure of glutaric acid is 3.83e-06 hPa at 25°C.

Executive summary:

The vapour pressure of glutaric acid is 3.83e-06 hPa at 25°C.

Reference 2

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Principles of method if other than guideline:

no data

GLP compliance:

not specified

Type of method:

other: no data

Temp.:

18.5 °C

Vapour pressure:

0.097 hPa

Conclusions:

The vapour pressure of adipic acid is 0.097 hPa at 18.5°C.

Executive summary:

The vapour pressure of adipic acid is 0.097 hPa at 18.5°C.

Reference 3

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Principles of method if other than guideline:

Value for 25°C was calculated from coefficients for vapour pressure equation.

GLP compliance:

not specified

Type of method:

other: extrapolated

Temp.:

25 °C

Vapour pressure:

0 hPa

The value for 25 °C (298 K) is calculated with the following equation (in
appendix C: Coefficients for vapour pressure equation):
log P = A + B/T + C log T + D T + E T² (P - mm Hg, T - K),
where A = -81.7799
      B = - 3.2780E+03
      C =   4.0443E+01
      D = - 4.6257E-02
      E =   1.5606E-05
  log P = - 5.1051 (mm Hg)
  

Conclusions:

The vapour pressure of succinic acid is 1.05e-05 hPa at 25°C.

Executive summary:

The vapour pressure of succinic acid is 1.05e-05 hPa at 25°C.

Reference 4

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

comparable to guideline study with acceptable restrictions

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

GLP compliance:

not specified

Type of method:

gas saturation method

Temp.:

140 °C

Vapour pressure:

1.12 hPa

Mol % in vapor: 79 succinic acid, 15 glutaric acid, 6 adipic acid.

Conclusions:

The vapour pressure of the mixture of adipic acid, glutaric acid and succinic acid is 1.12 hPa at 140°C.

Executive summary:

The vapour pressure of the mixture of adipic acid, glutaric acid and succinic acid is 1.12 hPa at 140°C.

Description of key information

The vapour pressure of  the mixture of adipic acid, glutaric acid and succinic acid is 1.12 hPa at 140°C (BASF, 1974).
At ambient temperature, the vapour ressures of the single acids are: For 
glutaric acid : 3.83e-6 hPa (25°C), (Yaws, 1994)
adipic acid : 0.097 hPa (18°C), (Kirk-Othmer, 1991)
succinic acid : 1.05e-5 hPa (25°C), (Yaws, 1994)

Key value for chemical safety assessment

Vapour pressure:

1.12 hPa

at the temperature of:

25 °C