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Registry of Toxic Effects of Chemical Substances (RTECS)

Urea, 1,1'-isobutylidenedi-

RTECS #

YT5300000

CAS #

6104-30-9

Updated

January 1997

Molecular Weight

174.24

Molecular Formula

C6H14N4O2

Synonyms

1,1-Diureidisobutane
1,1'-Isobutylidenebisurea
Diureidoisobutane
IBDU
Isobutyldiurea
Isobutylenediurea
Isobutylidenediurea
Isodur
N,N''-(2-Methylpropylidene)bisurea
Urea, N,N''-(2-methylpropylidene)bis-, (9CI)

Tumorigenic Data and References

Route/OrganismDoseEffectReference
oral/mouse lowest published toxic dose: 32 gm/kg/20W- intermittentTumorigenic: Equivocal tumorigenic agent by RTECS criteria

Tumorigenic: Tumor types after systemic administration not seen spontaneously
VPITAR 37(2),72,1979
oral/rat lowest published toxic dose: 64 gm/kg/20W- intermittentTumorigenic: Equivocal tumorigenic agent by RTECS criteria

Lung, Thorax, or Respiration: Bronchogenic carcinoma

Skin and Appendages: Tumors
VPITAR 37(2),72,1979

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Occupational Exposure Survey 1983Hazard Code X4124; Number of Industries 1; Total Number of Facilities 48; Number of Occupations 2; Total Number of Employees Exposed 1252

Status in Federal Agencies

OrganizationReference
EPA TSCA Section 8(b) CHEMICAL INVENTORY
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