Normalized molecular weight

The majority of the compounds of the type Ar2BiY2 are stable crystalline soflds, soluble in organic solvents. They give normal molecular weights in solvents such as ben2ene. 

Equation (8) was found to give results in good agreement with experiment by vaiTt Hoff (1885), van Deventer and van der Stadt (1892), and Noyes and Sammet (1903). An agreement between the observed and calculated values of A implies that the solute has a normal molecular weight in solution. 

Sulphur and Iodine.—Various methods have been described for the preparation of compounds of iodine and sulphur,3 but to-day the products are regarded merely as mixtures of the elements.1 In solution in carbon disulphide, iodine and sulphur exist side by side permanently uncombined. The freezing-point curves for mixtures of the two elements,5 as also the vapour pressure curve of the fusion products,6 likewise give no indication whatever of chemical combination, although sulphur forms a solid solution in iodine. A further proof of the absence of combination is the fact that when dissolved in iodine, sulphur has a normal molecular weight, determined eryoseopically, only a little below that required for S8.7 The present condition of our knowledge, therefore, may be summed up in the statement that no definite compound of sulphur and iodine has yet been obtained.8... 

With respect to its elements, the substance is exothermic to the extent of approximately 47200 calories per gram-molecule the latent heat of vaporisation is 54-45 calories per gram and the specific heat at ordinary temperatures is 0-2425. When dissolved in benzene or chloroform, thionyl chloride possesses practically a normal molecular weight,6 but when used as a solvent it permits ionisation.7 Its dielectric constant is 9-05 at 22° C.8 ... 

The overall expression for 8 (integral surface layer) for polymers of the "normal" molecular weight range becomes ... 

Figure 14. Normalized molecular weights versus catalyst concentration for different series. Mw ref. = value at highest catalyst. Key A, M-B-20/30-60-100 0, M-B-23/25-48 , M-B-40/15-49 ...

Table 11.10. Melting and crystallization enthalpies of ultra-high molecular weight polyethylene (UHMWPE) and normal molecular weight polyethylene (NMWPE) blends [Minkova and Mihailov, 1990]...

---