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Methyl (n-amyl) ketone

General Description

Synonyms: Amyl methyl ketone; N-Amyl methyl ketone; 2-Heptanone; MAK

OSHA IMIS code: 1675

CAS number: 110-43-0

Exposure Limits and Health Effects (Updated September 6, 2012)

Standard Set By Exposure Limit Health Effect Codes -- Health Effects and Target Organs
OSHA PEL - General Industry
See 29 CFR 1910.1000 Table Z-1
100 ppm (465 mg/m3) TWA
HE8 -- narcosis
HE15 -- mucous membrane irritation
OSHA PEL - Construction Industry
See 29 CFR 1926.55 Appendix A
100 ppm (465 mg/m3) TWA
HE8 -- narcosis
HE15 -- mucous membrane irritation
OSHA PEL - Shipyard Employment
See 29 CFR 1915.1000 Table Z - Shipyards
100 ppm (465 mg/m3) TWA
HE8 -- narcosis
HE15 -- mucous membrane irritation
NIOSH REL 100 ppm (465 mg/m3) TWA HE8 -- narcosis
HE15 -- mucous membrane irritation
ACGIH TLV® (1978) 50 ppm (233 mg/m3) TWA HE15 -- eye and skin irritation
CAL/OSHA PELs 50 ppm (235 mg/m3) TWA HE15 -- eye and skin irritation

Carcinogenic classification:

  • NTP: Not listed
  • IARC: Not listed
  • EPA: Not listed

EPA Inhalation Reference Concentration (RfC): Not established

ATSDR Inhalation Minimal Risk Levels (MRLs): Not established

NIOSH IDLH concentration: 800 ppm

Notes on other potential health effects and hazards:

  1. Explosive vapor/air mixtures may be formed above 48°C (NIOSH/IPCS 1996).

Partial reference list:

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Methyl n-Amyl Ketone. 2016.
  • NIOSH: Criteria for a Recommended Standard - Occupational Exposure to Ketones. June 1978.
  • NIOSH/CEC/IPCS: International Chemical Safety CardsMethyl n-amyl ketone. March 28, 1996.

Chemical Sampling Information

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