N-cyclohexylbenzothiazole-2-sulfenamide

Vapour pressure

Link to relevant study record(s)

Reference

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

Principles of method if other than guideline:

adapted from Spencer and Cliath (W.F. Spencer and M.M. Cliath, Environ. Sci. Tech. 3, 670 (1969))
passing a carrier gas (such as nitrogen) through a sample slowly enough to saturate the gas with sample vapor

GLP compliance:

not specified

Type of method:

gas saturation method

Key result

Temp.:

25 °C

Vapour pressure:

< 0 hPa

Sample No.	Substance spiked [µg]	Substance recovered [µg]	Recovery [%]
1	49.9	51.6	103
2	49.9	51.7	104

 

No measurable substance was collected for vapor pressure measurement. The vapor pressure of N-cyclohexylbenzothiazole-2-sulphenamide was estimated to be <4.53e-7 hPa, based on the detection limits of the analytical method.

 

An odor noted in the pure substance was also detected in the extract of the collection sorbent. Since the recovery of the substance was 100% after one week of storage, it was assumed that the odor was from a minor contaminant that had a high vapor pressure. Analysis of substance standards for contaminants gave negative results.

Conclusions:

The vapor pressure of N-cyclohexylbenzothiazole-2-sulphenamide is lower than <4.53e-7 hPa at 25 °C determined by using gas saturation method (Monsanto, 1980).

Executive summary:

In an experimental study on N-cyclohexylbenzothiazole-2-sulphenamide using the gas saturation method, the vapour pressure of the substance was examined.

For that study, approximately 50 µg of the substance was spiked on Tenax-GC and stored for one week. After desorption with acetone 100% of the substance was recovered. Moreover, no measurable amount of substance was collected from the samples. Thus, the vapor pressoure of the substance was determined as <4.53e-7 hPa at 25 °C, based of the detection limits of the analytical method (Monsanto, 1980)

Description of key information

In an experimental study on N-cyclohexylbenzothiazole-2-sulphenamide using the gas saturation method, the vapour pressure of the substance was examined.

For that study, approximately 50 µg of the substance was spiked on Tenax-GC and stored for one week. After desorption with acetone 100% of the substance was recovered. Moreover, no measurable amount of substance was collected from the samples. Thus, the vapor pressoure of the substance was determined as <4.53e-7 hPa at 25 °C, based of the detection limits of the analytical method (Monsanto, 1980)

Key value for chemical safety assessment

Vapour pressure:

0 hPa

at the temperature of:

25 °C