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Mesityl oxide

Mesityl oxide for synthesis. CAS 141-79-7, EC Number 205-502-5, chemical formula (CH₃)₂CCHCOCH₃., for synthesis

Synonym: Isopropylideneacetone, 4-Methyl-3-penten-2-one

  • CAS Number 141-79-7

  • Linear Formula C₆H₁₀O

  • Molecular Weight 98.14 g/mol

  •  EC Number 205-502-5

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Properties

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packaging   100 ml in Glass bottle (8057910100)
bp   130 °C (1013 hPa)
expl. lim.     1.4 - 10.1 %(V)
vapor pressure   10.5 hPa (20 °C)
solubility   30 g/l
density   0.85 g/cm3 (20 °C)
flash point   28 °C
autoignition temp.   344 °C
mp   -59 °C
LD 50 oral   LD50 Rat 1120 mg/kg
LD 50 dermal   LD50 Rabbit 5150 mg/kg
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay isomers (GC, area%): ≥ 97.0 % (a/a)
  a-Mesityl oxide (GC, area%): ≥ 85.0 % (a/a)
  Density (d 20 °C/ 4 °C): 0.853 - 0.856
  Identity (IR): passes test

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Safety & Documentation

Safety Information

HS Code 
2914 19 90
Hazard Statement(s) 
H226: Flammable liquid and vapour.
H302 + H312 + H332: Harmful if swallowed, in contact with skin or if inhaled
Precautionary Statement(s) 
P210: Keep away from heat.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
Storage class 
3 Flammable liquids
WGK 
WGK 1 slightly water endangering
Disposal 
3
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.
Hazard Pictogram(s) 
GHS02  GHS02
Hazard Pictogram(s) 
GHS07  GHS07
Hazard Symbols 
Harmful  Harmful
Declaration (railroad and road) ADR, RID 
UN 1229 , 3, III
Declaration (transport by air) IATA-DGR 
UN 1229 , 3, III
Declaration (transport by sea) IMDG-Code 
UN 1229 , 3, III
Categories of danger 
flammable, harmful
R Phrase 
R 10-20/21/22
Flammable.Harmful by inhalation, in contact with skin and if swallowed.
S Phrase 
S 25
Avoid contact with eyes.
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