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4-Methyl-2-pentanone Structure

4-Methyl-2-pentanone

Chemical Properties

Melting point -80 °C (lit.)
Boiling point 117-118 °C
Density  0.801 g/mL at 25 °C (lit.)
vapor density  3.5 (vs air)
vapor pressure  15 mm Hg ( 20 °C)
FEMA  2731 | 4-METHYL-2-PENTANONE
refractive index  n20/D 1.395(lit.)
Flash point 56 °F
storage temp.  Store at +5°C to +30°C.
solubility  water: soluble20g/L, soluble in alcohol, miscible with oils. Soluble in Propylene glycol and Glycerin.
form  Liquid
color  APHA: ≤15
Specific Gravity 0.80
Odor Pleasant; mild, characteristic; sharp; non-residual; ketonic.
explosive limit 1.2-8%, 93°F
Odor Threshold 0.17ppm
Odor Type green
Water Solubility  17 g/L (20 ºC)
λmax λ: 335 nm Amax: 1.00
λ: 340 nm Amax: 0.50
λ: 360 nm Amax: 0.15
λ: 380 nm Amax: 0.02
λ: 400 nm Amax: 0.01
JECFA Number 301
Merck  14,5207
BRN  605399
Henry's Law Constant 2.56 at 25 °C (batch stripping method-GC, Kim et al., 2000)
Exposure limits TLV-TWA 205 mg/m3 (50 ppm); STEL 300 mg/m3 (75 ppm) (ACGIH); IDLH 3000 ppm (NIOSH).
Dielectric constant 13.0(Ambient)
Stability Volatile
LogP 1.3-1.9 at 20℃
Substances Added to Food (formerly EAFUS) METHYL ISOBUTYL KETONE
FDA 21 CFR 172.515; 175.105; 177.1650
CAS DataBase Reference 108-10-1(CAS DataBase Reference)
EWG's Food Scores 5-8
FDA UNII U5T7B88CNP
Proposition 65 List Methyl Isobutyl Ketone (MIBK)
IARC 2B (Vol. 101) 2013
NIST Chemistry Reference Methyl isobutyl ketone(108-10-1)
EPA Substance Registry System Methyl isobutyl ketone (108-10-1)

Safety

Symbol(GHS) GHS hazard pictogramsGHS hazard pictograms
Signal wordDanger
Hazard statements H225-H319-H332-H335
Precautionary statements P210-P233-P240-P241-P304+P340+P312-P305+P351+P338
Hazard Codes  F,Xn,T
Risk Statements  11-20-36/37-66-39/23/24/25-23/24/25
Safety Statements  9-16-29-45-36/37-7
RIDADR  UN 1245 3/PG 2
OEB A
OEL TWA: 50 ppm (205 mg/m3), STEL: 75 ppm (300 mg/m3)
WGK Germany  1
RTECS  SA9275000
Autoignition Temperature 840 °F
TSCA  Yes
HS Code  2914 13 00
HazardClass  3
PackingGroup  II
Hazardous Substances Data 108-10-1(Hazardous Substances Data)
Toxicity LD50 orally in rats: 2.08 g/kg (Smyth)
IDLA 500 ppm
NFPA 704:
3
2 1

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