SWCAA Pollutant Details

78-93-3: METHYL ETHYL KETONE (MEK)

  • 2-BUTANONE
  • BUTANONE, 2-
  • MEK

IUPAC: butan-2-one
InChi Key: ZWEHNKRNPOVVGH-UHFFFAOYSA-N WEB


HAP:   NO
VOC:   NO
Criteria Pollutant:   NO
Particulate:   NO
Trace Element:   NO
98 ECY TAP:   YES
09 ECY TAP:   YES
19 ECY TAP:   YES
Chemical Formula:   CH3COCH2CH3
Element Count:   C4 H8 O
Molecular Weight:   72.106 g/mol
GHG-EPA:   NO
GHG-WA state:   NO
CO2 Equivalent:  
PM Precursor:   NO
Ozone (O3) Precursor:   YES
Ozone Depleting:  
Ozone Depletion Potential:  
Lifetime in Years:  
Marijuana Pollutant:   NO
ECY PBT:  
SWCAA TAP Category:  
EPA HAP Category:   EPA DELISTED HAP 
EPA HAP Group Category:  
EPA NEI Pollutant Code:   78933
EPA SRS ID:   7443  Web
EPA ATW FACT SHEET:   Web
EPA NEI COMPOUND ID:  
EPA Banned Substance:   NO
EPCRA 313 PBT:  
EPA Urban HAP:   NO
     

Boiling Point:   175.1 / 79.44 F/C
Melting Point:   -123.88 / -86.67 F/C
Specific Gravity:   0.805
Vapor Pressure:   100 mmHg@77F (25C)
Henry's Law Constant:   0.0000569 atm-cu m/mole@25C (77F)
Convert ppm to mg/m3:   2.949
Log Pow:   0.29

Regulated Under These Programs

NIOSH OSHA ACGIH OEHHA
EPA IRIS ATSDR EPA ATW TSCA 2019
CAL TOXIC NEW JERSEY TRI 2014 DFG

SWCAA / WAC 173-460 (1998) TOXIC LIMITS
ASIL SQER TAP
Class
24hr ug/m3 Annual ug/m3 lbs/yr lbs/hr
1000 43,748 5.0  B
WAC 173-460 (2009) TOXIC LIMITS
 
ASIL ug/m3 SQER lbs/ Deminimus lbs/ Average Period
5000  27.4  1.37  24 HR 

WAC 173-460 (2019) TOXIC LIMITS
 
ASIL ug/m3 SQER lbs/ Deminimus lbs/ Average Period
5000  370  19  24 HR 
IRIS EPA Integrated Risk Information System (IRIS) Web
IRIS INH REF CONC (non cancer):  5  mg/m3
IRIS URF (cancer):   per ug/m3
   
IRIS WOE Cancer Class: 

Oregon Department of Environmental Quality Web
Ambient Benchmark Concentration:  
New Jersey Department of Health Web
Right To Know Code: 1258 Web 

Idaho Occupational Exposure Limits (OEL) Web
IDAHO DEQ Type:  Non-Carcinogenic  
IDAHO OEL (non-cancer):  590  mg/m3
IDAHO ACC (non-cancer):  29.5  mg/m3
IDAHO DEQ Emission Level:  39.3  lb/hr
IDAHO DEQ URF (cancer):   per ug/m3
IDAHO AACC (cancer):   ug/m3
Texas Effects Screening Levels (ESL) Web
Short Term ESL:  1300  ug/m3
Basis:  Odor  
 
Long Term ESL:  2600  ug/m3
Basis:  Health  

ACGIH Threshold Limit Values (TLV) Web
2008 ACGIH TLV TWA:  590  mg/m3
2008 ACGIH STEL:  885  mg/m3
2008 ACGIH Carcinogen Class:   
ATSDR Minimal Risk Levels (MRL) Web
ATSDR GMMC AIR:  0.04948094  mg/m3
 ATSDR Chronic MRL:  
 ATSDR Acute MRL:  
 ATSDR Interrim MRL:  
 ATSDR Carcinogenicity Class: 3  

NIOSH Recommended Exposure Limits (REL) Web
NIOSH RTECS No:  EL6475000  
NIOSH ICSC No:  0179  Web
NIOSH REL TWA:   
NIOSH STEL:   
NIOSH IDLH:  3000  ppm
OEHHA Category Group Ref Exposure Levels (REL) Web
OEHHA Acute REL:  13000  ug/m3
OEHHA Chronic REL:   
OEHHA URF (cancer):   per ug/m3
   

OSHA Permissible Exposure Limits (PEL) Web
OSHA PEL TWA:   mg/m3
OSHA STEL:   
DFG German Research Foundation (MAK) Web
Carcinogen and Mutagen Categories:
DFG MAK:   cancer
DFG BAT:   mutagen

DISCLAIMER: The SWCAA Pollutants Detail Page reports values from other authorized sources such as IRIS or NIOSH. These sources are frequently updated with the results of more current studies. To ensure you have the most current values please visit the appropriate agency Website.

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