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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
specific investigations: other studies
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
supporting study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Full GLP report guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1987
Report date:
1987

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: ASTM method E981-84, Standard Method for Estimating Sensory Irritation of Airborne Chemicals, 1984
GLP compliance:
yes
Type of method:
in vivo

Test material

Constituent 1
Reference substance name:
m-tolylidene diisocyanate
EC Number:
247-722-4
EC Name:
m-tolylidene diisocyanate
Cas Number:
26471-62-5
IUPAC Name:
2,4-diisocyanato-1-methylbenzene
Details on test material:
- Name of test material (as cited in study report): Mondur TD 80

Test animals

Species:
rat
Strain:
Sprague-Dawley
Sex:
male

Administration / exposure

Route of administration:
inhalation: vapour
Vehicle:
unchanged (no vehicle)
Details on exposure:
The test substance was generated as a vapor in a glass bubbler, immersed in a water bath at 25 degree C, and concentrations achieved by varying the rate of airflow.
Analytical verification of doses or concentrations:
yes
Details on analytical verification of doses or concentrations:
Concentrations of Mondur TD-80 in the exposure chamber were determined at 0.5, 1.5, and 2.5 hours of exposure.
Duration of treatment / exposure:
3h
Doses / concentrations
Remarks:
Doses / Concentrations:
0.10 to 1.45 ppm
Basis:
analytical conc.
No. of animals per sex per dose:
4
Details on study design:
Statistics
The RD 50 value with 95% confidence limits were calculated by probit analysis using computer programs of SAS (SAS Institute Inc. Cary, North Carolina, US)

Results and discussion

Details on results:
Effect levels
Sex male
Endpoint other: RD50
Effect level 2.12 ppm
95% CL 1.61 — 3.4
Exp. duration 3 h
Remarks

Any other information on results incl. tables

Remarks on results including tables and figures

95% confidence interval = 1.61 - 3.40 ppm

mean analytical

concentration

decrease in respiratory rate

(% of control)

0.10

0

0.36

7

0.84

24

1.45

35

Applicant's summary and conclusion