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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Acute Toxicity: inhalation

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Administrative data

Endpoint:
acute toxicity: inhalation
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: 4e: Documentation insufficient for assessment.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1980

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Rats were exposed one hour to an atmospheric concentration of 0.4 mg compound per liter air.
GLP compliance:
not specified
Limit test:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
4-methylthiosemicarbazide
EC Number:
229-563-2
EC Name:
4-methylthiosemicarbazide
Cas Number:
6610-29-3
Molecular formula:
C2H7N3S
IUPAC Name:
1-amino-3-methylthiourea
Details on test material:
no data

Test animals

Species:
rat
Strain:
not specified
Sex:
not specified

Administration / exposure

Route of administration:
inhalation
Vehicle:
other:
Duration of exposure:
1 h
Concentrations:
0.4 mg/l
No. of animals per sex per dose:
no data
Control animals:
no

Results and discussion

Effect levels
Sex:
not specified
Dose descriptor:
LC0
Effect level:
> 0.4 mg/L air
Exp. duration:
1 h
Mortality:
No deaths were reported
Clinical signs:
other: No toxic effects were noted.

Applicant's summary and conclusion

Conclusions:
Signs of toxicity were not observed when rats were exposed one hour to an atmospheric concentration of 0.4 mg/ml of MTSC. The crystalline nature of MTSC probably reduces inhalational hazards.