Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicological information

Exposure related observations in humans: other data

Administrative data

Endpoint:
exposure-related observations in humans: other data
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
secondary literature

Data source

Reference
Reference Type:
secondary source
Title:
SIDS Initial Assessment report for SIAM 5: Isobutanal CAS No: 78-84-2
Author:
OECD SIDS
Year:
2004

Materials and methods

Type of study / information:
Effects after exposure of male volunteers
Endpoint addressed:
respiratory irritation
Principles of method if other than guideline:
15 male volunteers exposed to 210 ppm vapour for 30 min
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Isobutyraldehyde
EC Number:
201-149-6
EC Name:
Isobutyraldehyde
Cas Number:
78-84-2
Molecular formula:
C4H8O
IUPAC Name:
2-methylpropanal
Details on test material:
- Name of test material: Isobutanal

Method

Ethical approval:
not specified
Exposure assessment:
not specified
Details on exposure:
15 male volunteers were exposed to 210 ppm (620 mg/m3) isobutanal vapour for 30 min

Results and discussion

Results:
No irritation was observed. Nausea was noted by some of the subjects, and one subject vomited.

Applicant's summary and conclusion