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  • Resazurin sodium salt  62758-13-8
Name:Resazurin sodium salt 62758-13-8
CAS No:62758-13-8



Resazurin (7-Hydroxy-3H-phenoxazin-3-one 10-oxide) is a blue dye, itself weakly fluorescent until it is irreversibly reduced to the pink colored and highly red fluorescent resorufin. It is used as an oxidation-reduction indicator in cell viability assays for bacteria and mammalian cells, and for measuring aerobic respiration and exchange with the hyporheic zone in streams. Usually it is available commercially as the sodium salt.
Resazurin (pH indicator) below pH 3.8 above pH 6.5 3.8 ⇌ 6.5; Resazurin solution has one of the highest values known of Kreft's dichromaticity index. This means that it has a large change in perceived color hue when the thickness or concentration of observed sample increases or decreases.

Basic Info

Chemical Name Resazurin sodium salt

7-Hydroxy-10-oxy-phenoxazin-3-on,Natrium-Verbindung;7-hydroxy-10-oxy-phenoxazin-3-one,sodium-compound;ResazurinGr;7-sodiooxy-3H-phenoxazin-3-one 10-oxide;DIAZORESORCINOL;RESAZURIN SODIUM;7-hydroxy-3H-phenoxazin-3-one 10-oxide sodium salt;Resazurine;RESAZOIN;REZAZURIN;RESAZURIN NA-SALT;SODIUM RESAZURIN;REISHIMUSHROOM.P.E;Collapse

CAS No. 62758-13-8
Molecular Formula C12H6NNaO4
Molecular Weight 251.17000
PSA 78.73000
LogP 2.47010

Numbering system

MDL number MFCD00005036


Appearance & Physical State dark red crystals with a greenish lustre
Boiling Point 477.2ºC at 760 mmHg
Melting Point >200ºC
Flash Point 242.4ºC
Water Solubility soluble
Stability Stable. Incompatible with strong oxidizing agents.
Storage Condition Store at RT.

Safety Info

Safety Statements S26-S36/37/39
HS Code 2934999090
WGK Germany 3
Risk Statements R22; R36/37/38
Hazard Codes Xn