Specification Sheet
Product Name Nuclear Fast Red,
for microscopy (Bot., Hist.)
Product Number 60700
Product Brand SIGMA
CAS Number 6409-77-4
Molecular Weight 357.27
 
TEST SPECIFICATION
APPEARANCE (COLOR) RED TO VERY DARK RED AND BROWN TO VERY DARK BROWN AND BROWN-RED AND RED-BROWN AND VERY DARK RED-BROWN
APPEARANCE (FORM) Powder
THIN LAYER CHROMATOGR. CORRESPONDS TO STANDARD
SOLUBILITY (COLOR) Red to Very Dark Red
SOLUBILITY (METHOD) 0.01G IN 10ML WATER:METHANOL 1:1, HOT
WAVELENGTH (1) (UV) 550 - 560 nm
EXTINCTION (1%/1CM) (1) (UV) ≥ 275
WAVELENGTH (2) (UV) 516 - 526 nm
EXTINCTION (1%/1CM) (2) (UV) ≥ 300
SOLVENT (UV) DMSO