Business segment & products

Methyl Ethyl Ketone (MEK)

Our MEK is used for a paint solvent, printing ink, bonding agent, etc.

Molecular Formula ENCS No. CAS No. Structural Formula
C4H8O 2-542 78-93-3
メチルエチルケトン

PHYSICAL PROPERTIES

TEST UNIT ANALYSIS
Molecular Weight   72.10
Boiling Point 79.6
Melting Point -87.3
Specific Gravity at 20/4℃   0.8047
Refractive index (   1.3787
Interfacial Tension (20℃) N/cm 246×10-6
Latent Heat of Evaporation J/g 443.7
Specific Heat at 20℃ J/g・℃ 2.09
Critical Temperature 260
Critical Pressure MPa 4.39
Water Azeotrope Boiling Point (0.1MPa) 73.41
Content of azeotrope wt% MEK88.7
Coefficient of Expansion (20℃)   0.0013
Flash Point (Tag closed cup tester) -7.2
Combastion Point 514
Explosive Limits in Air vol% 1.7~11.4

SPECIFICATIONS AND TYPICAL ANALYSIS

TEST UNIT SPECIFICATIONS TYPICAL ANALYSIS
Appearance   Clear and Colorless Clear and Colorless
Water % 1.0 MAX.  
Free Acid as Acetic Acid % 0.003 MAX. 0.0005
Distillation Test
Initial Boiling Point
Dry Point
Total Distillation



vol%

79.0 MIN.
80.5 MAX.
97 MIN.

79.4
79.9
99.0
Nonvolatile Matter % 0.003 MAX. 0.001
Specific Gravity at 20/20℃   0.805~0.807 0.8062
Color Hazen Unit 20 MAX. -
Composition(MEK purity) %   99.9

MAJOR USE:Solvent for paint, lube-oil dewaxing, adhesive and printing ink, Raw material for organic syntheses.

UN CLASS 3   UN NO.1193

Note

The descriptions herein are based on the available sources and information but no guarantee is given for its integrity or accuracy.

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