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Specifications

Hemoglobin is composed of one globin plus four hemes; heme consists of protoporphyrin IX and ferrous iron. The iron content of human hemoglobin is 0.338% (w/w) which gives a minimal molecular weight of 16,520; however, ultracentrifugal and osmotic pressure
measurements indicate an actual molecular weight four times the minimum molecular weight.
Catalog #	H1850-30B
Solubility (Color) @10mg/ml	Dark red brown
Iron (Fe)	0.25-0.35%
Water (Karl Fischer)	8%
Storage and Stability	Lyophilized powder may be stored at 4°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
	Note: Since native hemoglobin is readily oxidized in air, these preparations may be predominantly methemoglobin. Opened bottles should be capped tightly and kept in a dark, low humidity environment.
Country of Origin	USA
CAS Number	9008-02-0
Source	Porcine blood
Form	Supplied as a red-brown lyophilized powder
Important Note	This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.