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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1986-05-05 - 1986-05-05
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Qualifier:
no guideline available
Principles of method if other than guideline:
Iron is determined by atomic absorption. Tests are conducted at 25 °C. Gas volume used: 1483 L. The detection limit of the method is 0.05 ppm.
GLP compliance:
no
Type of method:
other: Iron is detected by atomic absorption in a gas volume
Key result
Temp.:
25 °C
Vapour pressure:
< 0 Pa

Test:

Gas volume used: 1483 L

Volume of water used in trap 1: 77.8 g

Iron amount: < 77.8 x 0.05E-6 g

Ferbam amount: < 77.8 x 0.05E-6 x (416.5 / 55.8) g = <29.01E-6

Vapor pressure: < ((29.01E-6 x 8.3142 x 298) / (1,483 x 416.5)) Pa = < 116.37E-6 Pa = < 8.6E-7 Torr.

Conclusions:
No iron was found in the traps. With a detection limit of the method of 0.05 ppm, the vapour pressure is calculated as < 116.37E-6 Pa at 25 °C
Executive summary:

Vapour pressure of ferbam is determined via Iron-determination by atomic absorption. Tests are conducted at 25 °C. Gas volume used: 1483 L. The detection limit of the method is 0.05 ppm. No iron was found in the traps. With a detection limit of the method of 0.05 ppm, the vapour pressure is calculated as < 116.37E-6 Pa at 25 °C

Description of key information

Vapour pressure of ferbam is determined via Iron-determination by atomic absorption. Tests are conducted at 25 °C. Gas volume used: 1483 L. The detection limit of the method is 0.05 ppm. No iron was found in the traps. With a detection limit of the method of 0.05 ppm, the vapour pressure is calculated as < 116.37E-6 Pa at 25 °C

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
25 °C

Additional information

Supporting Information 1: Perkow, 1992

authoritative publication: Ferbam has a vapour pressure of appoximatelly 0 Pa.

Supporting Information 2: Tomlin, 1997

authoritative publication: Ferbam has a vapour pressure of appoximatelly 0 Pa.

Supporting Information 3: EpiSuite calculation, 2017

accepted calculation method: The vapour pressure of Ferbam is calculated with different methods: Antoine method, Mackay method and modiefied Grain method. All calculations have in common that the vapor pressure is approximately equal to zero.