grade
ACS reagent
vapor density
3.4 (vs air)
vapor pressure
2.2 mmHg ( 20 °C)
5 mmHg ( 25 °C)
description
crystals
concentration
≥85 wt. % in H2O
total impurities
Reducing substances, passes test
≤0.001% Volatile acids (as CH3COOH)
color
≤10(APHA)
bp
158 °C(lit.)
mp
~40 °C(lit.)
density
1.685 g/mL at 25 °C(lit.)
anion traces
chloride (Cl-): ≤3 ppm
nitrate (NO3-): ≤5 ppm
sulfate (SO42-): ≤0.003%
cation traces
As: ≤1 ppm
Ca: ≤0.02%
Fe: ≤0.003%
K: ≤0.005%
Mg: ≤0.02%
Mn: ≤0.5 ppm
Na: ≤0.025%
Sb: ≤0.002%
heavy metals (as Pb): ≤0.001%
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