Methyl isobutyl ketone

Skip to Main Content

Chemical Name	Methyl isobutyl ketone
Synonym(s)	2-Methyl-4-pentanone \| 2-Methylpropyl methyl ketone \| 2-Pentanone, 4-methyl- \| 4-Methyl-2-oxopentane \| 4-Methyl-2-pentanone \| Hexone \| Isobutyl methyl ketone \| Isopropylacetone \| MIBK \| MIK
CASRN	108-10-1
De minimis Limit %	0.1
M,P/OU Threshould (lb)	25,000/10,000
Listing Type	Individually listed chemical
Effective Date	01-JAN-87
Chemical Qualifier	No
Metal	No
Chemical of Special Concern	No
Per- or Polyfluoroalkyl Substance	No

Rulemaking Changes Affecting This Chemical

Status	Effective Reporting Year	FR Proposed Rule	FR Final Rule
Denial of petition to delist	———	No proposed rule for this action	64 FR 8769 (2/23/1993)

Default Percentages for Section 6.1 Transfers

% of §6.1 to §:
8.1c	8.1d	8.7
0	9	91

Basis of OSHA Carcinogens

IARC	NTP	OSHA-Z
2B	–	–

Structural image
Structural representation of Methyl isobutyl ketone

Structural representation of Methyl isobutyl ketone