Hexane, 1,6-diisocyanato-2,2,4(or 2,4,4)-trimethyl-

Monitoring data

Administrative data

Endpoint:

monitoring data

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Study documentation sufficient (short report), meets generally accepted scientific principles, acceptable for assessment

Data source

Reference

Reference Type:

other company data

Title:

Unnamed

Year:

2000

Report date:

2000

Materials and methods

GLP compliance:

no

Type of measurement:

concentration at contaminated site

Media:

air

Test material

Test material information

Constituent 1

Reference substance name:

2,2,4(or 2,4,4)-Trimethylhexane-1,6-diisocyanate

EC Number:

915-277-1

Cas Number:

32052-51-0

Molecular formula:

C11H18N2O2

IUPAC Name:

2,2,4(or 2,4,4)-Trimethylhexane-1,6-diisocyanate

Test material form:

other: liquid

Details on test material:

TMDI-Isomer Mix, (consisting of 2,2,4-Trimethylhexamethylen-1,6-diisocyanate and 2,4,4-Trimethylhexamethylen-1,6-diisocyanate)

Study design

Details on sampling:

Sampling was conducted by personal-air-samplers over a representative working shift of 5 hours (long-term determinations) or over a short-term period representing the exposure relevant processes (short-term determinations).
personal air samplers: DuPont S 2500, Volume approx. 12 l/h (long-term determinations) or 120 l/h (short-term determinations), respectively
Thermohygrograph, by Lamprecht

Results and discussion

Any other information on results incl. tables

Report No.	Date	Duration (h/min)	Concentration		Task
			mg/m3	ml/m3
00/82	00 -10 -10	5 h 12 min	<0,0033	<0,0004
00/82	00 -10 -13	5 h 58 min	<0,0030	<0,0003
00/82	00 -10 -22	6 h 9 min	<0,0028	<0,0003
00/82	00 -10 -10	15 min	<0,0069	<0,0008	transfer of TMDI into reactor
00/82	00 -10 -22	15 min	<0,0069	<0,0008	transfer of TMDI into reactor
00/82	00 -10 -22	15 min	<0,0069	<0,0008	transfer of TMDI into reactor

Applicant's summary and conclusion

Conclusions:

Due to the present data and the measured values over a long term, it can be concluded that the exposure is well below the given limit values. The workplace measurements are assessed as " permanent undercut of the limit values". Limit value of 0,04 mg/m3.

Executive summary:

Due to the present data and the measured values over a long term, it can be concluded that the exposure is well below the given limit values. The workplace measurements are assessed as " permanent undercut of the limit values".