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Molecular Weight Range         Concentration Range (weight per volume) w/v
MW > 1,000,000         0.007- 0.02%
500K - 1,000,000        0.02 - 0.07%
100K - 500K        0.07 - 0.10%
50K - 100K        0.10 - 0.13%
10K - 50K        0.13 - 0.16%
<10K        0.16 - 0.20%
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some polyolefins need temperatures greater than 120¡ã C to dissolve, and are typically run in 1,2,4 trichlorobenzene £¨TCB£©at 140¡ã C.
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