Specification Sheet

Product Name
Indigo carmine for microscopy (Bact., Hist.), indicator (pH 11.5-14.0)

Product Number
57000

Product Brand
sigma

CAS Number
860-22-0

Molecular Weight
466.35

Test

Specification

APPEARANCE (COLOR)Purple to Very Dark Purple
APPEARANCE (FORM)Powder
THIN LAYER CHROMATOGR.CORRESPONDS TO STANDARD
SOLUBILITY (COLOR)Blue to Very Dark Blue
SOLUBILITY (TURBIDITY)--
SOLUBILITY (METHOD)0.01G IN 10ML METHANOL
PH-TRANSITIONPH 11.5 = BLUE, PH 14.0 = YELLOW
LOSS ON DRYING≤ 10 %
WAVELENGTH (1) (UV)603 - 613 nm
EXTINCTION (1%/1CM) (1) (UV)≥ 350
SOLVENT (UV)Water

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