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Alpha Methyl Styrene Dimer

 

Alpha Methyl Styrene Dimer (AMSD) co-monomer in olefin polymerization, acts as a chain terminator in plastics.


Classifications

Product Technology

Chemical Intermediates, Functional Monomers

Chemical Name

Alpha Methyl Styrene Dimer

CAS #

6362-80-7

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Chemical Intermediates

Property Name Value Unit 
Appearance Liquid --
Boiling point 166 °C
Color Colorless --
Evaporation rate < Ether --
Flash point (Cleveland open cup) 58 °C
Heat of combustion 41.77 kJ/g
Lower explosion limit 0.7 %
Melting point/freezing point -23 °C
Odor Aromatic --
Odor Threshold 0.29 ppm
Relative density at 25 °C 0.9106 --
Relative vapor density 4.08 --
Solubility in water Insoluble --
Upper explosion limit 6.1 %
Vapor pressure at 20 °C 2.54 hPa
Viscosity (Dynamic) at 20 °C 0.94 mPa.s
Volatile organic compounds (VOC) 100 --

 

 

Specification Name Value  Unit  Test Method  Test Condition
AMS monomer 0.5 max.  % by mass  --  -- 
Boiling Point at 760 mm Hg 309 – 320  °C  --  -- 
Color, H.U. 20 max.  --  --  -- 
Flash Point (Tag Closed Cup) 146  --  --  -- 
Melting Point -23  --  --  -- 
Purity as unsaturated Dimers 98.5 min.  % by mass  --  -- 
Saturated Dimmer 1.0 max.  % by mass  --  -- 
Unsaturated Dimer content, (Substituted 1-pentene) 92.0 min.  % by mass  --  -- 
Unsaturated Dimer content, (Substituted 2-pentene) 6.5 max  % by mass  --  -- 

 

 

 

  • Chemical Intermediates
  • Plastics
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