Specification Sheet
Product Name Bromocresol Purple,
for microscopy (Hist., Vit.), indicator (pH 5.2-6.8)
Product Number 17490
Product Brand SIGMA
CAS Number 115-40-2
Molecular Weight 540.22
 
TEST SPECIFICATION
APPEARANCE (COLOR) FAINTLY TO SLIGHTLY RED/VIOLET/PURPLE/RED-VIOLET OR PINK
APPEARANCE (FORM) Powder
PURITY (HPLC AREA %) ≥ 95.0 %
SOLUBILITY (COLOR) Orange to Very Dark Orange and Red to Very Dark Red and Orange-Red and Red-Orange
SOLUBILITY (METHOD) 0.1G IN 10ML ETHANOL, HOT
PH-TRANSITION PH 5.2 = YELLOW ; PH 6.8 = VIOLET/PURPLE
SULFATED ASH ≤ 1.0 %
CARBON CONTENT 46.69 % (THEORY)
HYDROGEN CONTENT 2.99 % (THEORY)
WAVELENGTH (1) (UV) 414 - 424 nm
EXTINCTION (1%/1CM) (1) (UV) ≥ 400
SOLVENT (UV) METHANOL