2,2-dimethylpropane-1,3-diamine

Vapour pressure

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Principles of method if other than guideline:

Determination of the boiling temperature of a test substance of high purity at constant pressure under an inert gas atmosphere.

GLP compliance:

no

Type of method:

dynamic method

Specific details on test material used for the study:

2,2-Dimethylpropane-1,3-diamin (pure), C5H14N2, M = 102,18 g/mol,
CAS: 7328-91-8, purity: 98,3 %

Key result

Temp.:

20 °C

Vapour pressure:

2.29 hPa

Remarks on result:

other: extrapolated sublimation pressure

1: ln(p/Pa) = 87.23861 - 8790.2161 / T - 9.11257*lnT

[T] in Kelvin

mean deviation: 0.36 %

scope of application 41.9 bis 155.9 °C

2: ln(p/bar) = 9.2891 - 3189.85 / (187.72 + t)

[t] in °C

mean deviation: 0.12 %

scope of application 41.9 bis 155.9 °C

temperature t/°C	pressure (exp.) p/hPa	pressure (calc. equation 2) p/hPa
20.00 a)	-	2.29 a), c)
25.00 a)	-	3.31 a), c)
41.89	10.00	10.020
50.00 b)	-	16.095 b)
53.86	20.02	19.944
61.62	30.06	30.080
71.98	50.04	50.108
79.27	70.06	70.073
87.40	99.92	99.742
105.00	200.1	200.28
116.33	300.2	300.59
131.82	499.9	499.85
142.99	700.1	700.28
155.92	1007.6	1006.66

a) values extrapolated       b) value interpolated       c) sublimation pressures

Reference 2

Endpoint:

vapour pressure

Type of information:

other: handbook value

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:

Data from authoritative online data compendium. Methods not reported.

GLP compliance:

not specified

Type of method:

other: Data from authoritative online data compendium.

Specific details on test material used for the study:

- Name of test substance (as cited in report): 2,2-Dimethylpropylenediamine

Key result

Temp.:

30 °C

Vapour pressure:

2.87 mm Hg

Description of key information

The sublimation pressure at 20 °C is 2.29 hPa.