SELENIUM BLACK 99+ 50 G (50G) - 1.07714.0050, 50 g. Selenium Black 99+Percent 50G Plastic Bottle. Cas Number 7782-49-2, Solubility (20 Degree C) Slightly Soluble
SELENIUM BLACK 99+ 250 (250G) - 1.07714.0250, 250 g. Selenium Black 99+Percent 250G Plastic Bottle. Cas Number 7782-49-2, Solubility (20 Degree C) Slightly Soluble