ACS reagentpuriss. p.a.
200
USP/NFreag. ISOreag. Ph. Eur.
≥99.0%
crystalline
≤0.0005% heavy metals (by ICP-OES)≤0.0005% total nitrogen (N)≤0.01% in water insoluble matters≤0.03% free alkali (as NaOH)≤0.05% free acid (as H2SO4)
≤0.5% loss on ignition, 800 °C
5.2-8.0 (20 °C, 5%)
884 °C (lit.)
2.68 g/mL at 25 °C (lit.)
chloride (Cl-): ≤10 mg/kgphosphate (PO43-): ≤10 mg/kg
As: ≤1 mg/kgCa: ≤20 mg/kgFe: ≤5 mg/kgK: ≤100 mg/kgMg: ≤25 mg/kg
complies for appearance of solution
2-8°C
[Na+].[Na+].[O-]S([O-])(=O)=O
1S/2Na.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
PMZURENOXWZQFD-UHFFFAOYSA-L
13 - Non Combustible Solids
WGK 1