effective molecular weight

effective molecular weight

[ə′fek·tiv mə‚lek·yə·lər ′wāt]
(petroleum engineering)
Empirical relationship of oil graphed against API (American Petroleum Institute) gravity to give the effective (pseudoaverage) molecular weight of the oil for reservoir calculations.
References in periodicals archive ?
The strength of dyestuff samples were estimated from the ratio of its actual molecular weight (MW) to its effective molecular weight (Mole In) estimated by titanous chloride titration method (Murtagh, 2004) and is given in Table 1.
Radosz and co-workers surmised that the hydroxy groups allowed two chains to aggregate through hydrogen bonding, which increased their effective molecular weight. While this could be true in our system as well, we would expect that, owing to the use of triols, we would form large networks rather than micellular-type aggregates, and thus would also observe a significant increase in viscosity, which is not the case in our triol/C[O.sub.2] mixtures.
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