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Substance Name: Methyl ethyl ketone
RN: 78-93-3
UNII: 6PT9KLV9IO
InChIKey: ZWEHNKRNPOVVGH-UHFFFAOYSA-N
Note
- Solvent; colorless synthetic resins, smokeless powders; may be irritating to eyes, mucous membranes; may be toxic in high concentrations.
Molecular Formula
- C4-H8-O
Molecular Weight
- 72.1062
- All
- Classifications
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- Names & Synonyms
- Registry Numbers
- Structure Descriptors
- Toxicity
- Physical Properties
Classification Codes
Classification Codes
- Human Data
- Mutation Data
- Reproductive Effect
- Skin / Eye Irritant
Superlist Classification Codes
- 2007 CERCLA Priority List, Rank: 208
- 2011 CERCLA Priority List, Rank: 212
- Reportable Quantity (RQ) = 5000 lb
- TWA (200 ppm); STEL (300 ppm); BEI
- TWA 200 ppm (590 mg/m3)
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Names and Synonyms
Name of Substance
- 2-Butanone
- MEK
- Methyl ethyl ketone
- Methylethyl ketone
Synonyms
- 2-Butanone
- 3-Butanone
- Acetone, methyl-
- Aethylmethylketon
- Aethylmethylketon [German]
- AI3-07540
- AI3-07540 (USDA)
- Butanone 2
- Butanone 2 [French]
- Caswell No. 569
- CCRIS 2051
- EC 201-159-0
- EINECS 201-159-0
- EPA Pesticide Chemical Code 044103
- Ethyl methyl cetone
- Ethyl methyl cetone [French]
- Ethyl methyl ketone
- Ethylmethylcetone
- Ethylmethylcetone [French]
- Ethylmethylketon
- Ethylmethylketon [Dutch]
- FEMA No. 2170
- HSDB 99
- Ketone, ethyl methyl
- Meetco
- MEK
- Methyl acetone
- Methyl ethyl ketone
- Methylethyl ketone
- Methylethylketone
- Metiletilcetona
- Metiletilcetona [Spanish]
- Metiletilchetone
- Metiletilchetone [Italian]
- Metyl ethyl ketone
- Metyloetyloketon
- Metyloetyloketon [Polish]
- RCRA waste number U159
- UNII-6PT9KLV9IO
Systematic Names
- 2-Butanone
- Butanone
- Methyl ethyl ketone
Superlist Names
- 2-Butanone
- Ethyl methyl ketone or methyl ethyl ketone
- Ethyl methyl ketone or methyl ethyl ketone [UN1193] [Flammable liquid]
- MEK
- Methyl ethyl ketone
- RCRA waste no. U159
- UN1193
Registry Numbers
CAS Registry Number
- 78-93-3
FDA UNII
- 6PT9KLV9IO
Other Registry Number
- 135311-02-3
System Generated Number
- 0000078933
Structure Descriptors
InChI
InChI=1S/C4H8O/c1-3-4(2)5/h3H2,1-2H3InChIKey
ZWEHNKRNPOVVGH-UHFFFAOYSA-NSmiles
CCC(=O)Toxicity
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
guinea pig | LDLo | intraperitoneal | 2gm/kg (2000mg/kg) | Food and Cosmetics Toxicology. Vol. 15, Pg. 627, 1977. | |
guinea pig | LDLo | intraperitoneal | 2gm/kg (2000mg/kg) | LIVER: OTHER CHANGES | Food and Cosmetics Toxicology. Vol. 15, Pg. 627, 1977. |
human | TCLo | inhalation | 100ppm/5M (100ppm) | LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES SENSE ORGANS AND SPECIAL SENSES: CONJUNCTIVE IRRITATION: EYE SENSE ORGANS AND SPECIAL SENSES: OTHER CHANGES: OLFACTION | Journal of Industrial Hygiene and Toxicology. Vol. 25, Pg. 282, 1943. |
mammal (species unspecified) | LC50 | inhalation | 38gm/m3 (38000mg/m3) | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 51(5), Pg. 61, 1986. | |
mouse | LC50 | inhalation | 32gm/m3/4H (32000mg/m3) | Current Toxicology. Vol. 1, Pg. 47, 1993. | |
mouse | LD50 | intraperitoneal | 616mg/kg (616mg/kg) | Shell Chemical Company. Unpublished Report. Vol. -, Pg. 6, 1961. | |
mouse | LD50 | oral | 4050mg/kg (4050mg/kg) | Toxicology Letters. Vol. 30, Pg. 13, 1986. | |
rabbit | LD50 | skin | 6480mg/kg (6480mg/kg) | Shell Chemical Company. Vol. MSDS-5390-4, | |
rat | LC50 | inhalation | 23500mg/m3/8H (23500mg/m3) | American Industrial Hygiene Association Journal. Vol. 20, Pg. 364, 1959. | |
rat | LD50 | intraperitoneal | 607mg/kg (607mg/kg) | Environmental Research. Vol. 40, Pg. 411, 1986. | |
rat | LD50 | oral | 2737mg/kg (2737mg/kg) | Toxicology and Applied Pharmacology. Vol. 19, Pg. 699, 1971. |
Physical Properties
Physical Property | Value | Units | Temp (deg C) | Source |
---|---|---|---|---|
Melting Point | -8.66E+01 | deg C | EXP | |
Boiling Point | 79.5 | deg C | EXP | |
pKa Dissociation Constant | 14.7 | (none) | 25 | EXP |
log P (octanol-water) | 0.29 | (none) | EXP | |
Water Solubility | 2.23E+05 | mg/L | 25 | EXP |
Vapor Pressure | 90.6 | mm Hg | 25 | EXP |
Henry's Law Constant | 5.69E-05 | atm-m3/mole | 25 | EXP |
Atmospheric OH Rate Constant | 1.15E-12 | cm3/molecule-sec | 25 | EXP |
Physical property data is provided to ChemIDplus by SRC, Inc.