2,2',6,6'-Tetrabromo-4,4'-isopropylidenediphenol, oligomeric reaction products with 1-chloro-2,3-epoxypropane and 2,4,6-tribromophenol

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

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

Adequacy of study:

key study

Study period:

27/02/2012-23/05/2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

Read across from BROMINATED EPOXY HAVING EPOXY EQUIVALENT OF 400 gr/eq is justified by:
1.Both materials have the same backbone containing CMO-TBBPA-CMO.
2.Both materials have the same components distribution.
3.The difference between the two materials is the tribromophenol endcap.
An analytical report for BROMINATED EPOXY HAVING EPOXY EQUIVALENT OF 400 gr/eq is provided as attached justification. the analytical results can be compared to the composition of F-3014 (section 1.2).

Reason / purpose for cross-reference:

read-across source

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7950 (Vapor Pressure)

Principles of method if other than guideline:

/

GLP compliance:

yes

Type of method:

spinning rotor

Key result

Test no.:

#1

Temp.:

20 °C

Vapour pressure:

< 0 Pa

Remarks on result:

not determinable

The offset value (mean DCR) was 3.0562 x 10^-7 s-1 at 20 ± 1°C.

This value was based on the average deceleration rate measured with an empty sample chamber.

The mean measured background vapor pressure of the system by the SRG method was 2.22 x 10^-5 Pa at 20 ± 1°C.

The mean measured vapor pressure of the reference substance, hexachlorobenzene, by the SRG method was 1.37 x 10^-3 Pa at 20 ± 1°C. The vapor pressure was consistent with published values.

The system offset pressure using a weighted average molecular weight of 803 g/mol was 1.4659 x 10^-4 Pa at 20 ± 1°C. The mean measured vapor pressure of Brominated Epoxy, using a weighted average molecular weight of 803 g/mol, by the SRG was 1.43 x 10^-5 Pa at 20 ± 1°C, which was below the recommended reporting range of the spinning rotor gauge method.

Conclusions:

The mean vapor pressure for Brominated Epoxy at 20 ± 1°C was less than the recommended reporting range of the spinning rotor gauge method (1 x 10-4 Pa).
F-3014 compare to BROMINATED EPOXY HAVING EPOXY EQUIVALENT OF 400 gr/eq has tribromophenol as an endcap. This endcap increase the molecular weight and cause the material to become solid compare to BROMINATED EPOXY HAVING EPOXY EQUIVALENT OF 400 gr/eq which is wax like. Thus, the VP for F-3014 is expected to me even lower than the measured value for the BROMINATED EPOXY HAVING EPOXY EQUIVALENT OF 400 gr/eq.

Executive summary:

The mean vapor pressure for Brominated Epoxy at 20 ± 1°C was less than the recommended range of the spinning rotor gauge method (1 x 10^-4 Pa). F-3014 compare to BROMINATED EPOXY HAVING EPOXY EQUIVALENT OF 400 gr/eq has tribromophenol as an endcap. This endcap increase the molecular weight and cause the material to become solid compare to BROMINATED EPOXY HAVING EPOXY EQUIVALENT OF 400 gr/eq which is wax like. Thus, the VP for F-3014 is expected to me even lower than the measured value for the BROMINATED EPOXY HAVING EPOXY EQUIVALENT OF 400 gr/eq.

Description of key information

F-3014 compare to BROMINATED EPOXY HAVING EPOXY EQUIVALENT OF 400 gr/eq has tribromophenol as an endcap. This endcap increase the molecular weight and cause the material to become solid compare to BROMINATED EPOXY HAVING EPOXY EQUIVALENT OF 400 gr/eq which is wax like. Thus, the VP of F-3014 is expected to me even lower than the measured value for the BROMINATED EPOXY HAVING EPOXY EQUIVALENT OF 400 gr/eq. This assumption is further supported by QSAR assessment for the smallest component. The assessment predict a VP value in the order of magnitude less than 10^-20Pa.

Key value for chemical safety assessment

Vapour pressure:

0 Pa

at the temperature of:

25 °C