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How to calculate the molecular weight of sodium hyaluronate


How to calculate the molecular weight of sodium hyaluronate

The molecular weight of sodium hyaluronate can calculate via the Mark Houwink equation. From the Mark-Houwink equation the relationship among the molecular weight and viscosity are given below:

       [Ƞ] = KMα

Where Ƞ is the intrinsic viscosity , M is Molecular weight, K and α are constants for a particular polymer solvent  system.

The unit of intrinsic viscosity can be m3/kg or dl/g. (1m3/kg=10dl/g)

when unit of Ƞ is dl/g

K= 0.00057

α= 0.75

Unit of M is Da (dalton)

In excel, The molecular weight of sodium hyaluronate can be calculated as below: M=POWER((Ƞ/0.00057),1/0.75)

 

For example, Ƞ=2.801m3/kg=28.01dl/g, M=POWER((28.01/0.00057),1/0.75)=1.8M Da

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How to calculate the molecular weight of sodium hyaluronate




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