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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Study period:
2009
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Determination has been run according to standardized method but without GLP compliance.
Justification for type of information:
(See also Category polyamines in support of Oleyl dipropylenetriamine attached to Ch.13)
Structurally, the two linear-alkyl dipropylene triamines C18unsat dipropylene triamine and C12-18 dipropylenetriamine are very similar. Consequently, they share the same chemical reactivity and their physico-chemical properties are very similar from which a comparable toxicological profile can be expected.
Within a specific chemical structure, the variability of the alkyl chain length is considered to influence the physical chemical properties. For a lower molecular weight, and shorter alkyl chain lengths a higher vapour pressure is expected. Read across from a substance in this category with the lowest molecular weight, and the shortest alkylchain lengths, is expected to be a worst case approach, which will still reflect the fugacity of the substance registered in a manner relevant for risk assessment.
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
GLP compliance:
no
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Type of method:
gas saturation method
Specific details on test material used for the study:
The cas number has been changed from pre-registered cas number 91771-18-5 to new cas number 1219458-12-4
Key result
Temp.:
20 °C
Vapour pressure:
0 Pa
Key result
Temp.:
25 °C
Vapour pressure:
0 Pa

The vapour pressure was determined at three different temperatures; 34°, 48° and 63°C. The flow rate was 500 -700 ml/min for 34°C, 600 ml/min for 48°C and 200 ml/min for 63°C. The logarithms of the determined vapour pressures were plotted against the inverted absolute temperature in order to extrapolate the vapour pressure for 20° and 25°C.

Conclusions:
The vapour pressure of coco dipropylene triamine was determined to be 4.7 x 10^-5 Pa at 20°C and 9.1 x 10^-5 Pa at 25°C (0.05 mPa at 20°C and 0.09 mPa at 25°C).
Executive summary:

The vapour pressure of coco dipropylene triamine (CAS no 91771-18-5) has been determined according to the OECD Guidelines for the Testing of Chemicals, No 104 “Vapour Pressure”, by the gas saturation method. LCMS was used for the quantification.

 

The vapour pressure was determined at three different temperatures 34°, 48° and 63°C. The flow rate was 500-700 ml/min for 34°C, 600 ml/min for 48°C and 200 ml/min for 63°C. The logarithms of the determined vapour pressures were plotted against the inverted absolute temperature in order to extrapolate the vapour pressure for 20° and 25°C.

 

The vapour pressure of coco dipropylene triamine was determined to be 4.7 x 10-5Pa at 20°C and 9.1 x 10 -5Pa at 25°C (0.05 mPa at 20°C and 0.09 mPa at 25°C).

Description of key information

The vapour pressure of coco dipropylene triamine was determined to be 4.7 x 10-5 Pa at 20°C and 9.1 x 10-5 Pa at 25°C (0.05 mPa at 20°C and 0.09 mPa at 25°C). 

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
20 °C

Additional information