Sigma Aldrich 221988-100G Ammonium Thiocyanate, ≥97.5%, ACS Reagent Grade, 100g Bottle
ACS reagent grade Ammonium Thiocyanate has an assay of ≥97.5%. It is a melting point of 152 - 154°C (lit.). Its pH is 4.5 - 6.0 (25°C, 5% in H2O). Impurities include ≤0.004 meq/g I2 consumers; ≤0.005% insolubles. Anion traces include: chloride (Cl-): ≤0.005%; sulfate (SO42-): ≤0.005%. Cation traces include: Fe: ≤3 ppm; heavy metals (as Pb): ≤5 ppm. It is 100g packaged in a poly bottle. Sigma-Aldrich® #: 221988-100g.