# What is the approximate molecular weight of hemoglobin?

##### 1 Answer
Nov 17, 2015

J.F. Engelhard determined it to be about $64 \text{,} 000$ $\text{Daltons}$ (or $64 \text{,"458 "g/mol}$) in 1825. He wrote it as $n \times 16000$ where $n = 4$ iron atoms per hemoglobin.

https://en.wikipedia.org/wiki/Hemoglobin#Research_history