无水碳酸钠

产品名称

无水碳酸钠, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., anhydrous, ≥99.8% (calc. to the dried substance)

InChI key

CDBYLPFSWZWCQE-UHFFFAOYSA-L

InChI

1S/CH2O3.2Na/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2

SMILES string

O=C(O[Na])O[Na]

grade

ACS reagent
puriss. p.a.

agency

USP/NF
reag. ISO
reag. Ph. Eur.

assay

≥99.8% (calc. to the dried substance)

form

coarse powder

impurities

residual solvents, complies
≤0.001% total nitrogen (N)
≤0.003% total S (as SO₄)
≤0.01% in water insoluble matters

loss

≤0.5% loss on drying, 300 °C

pH

12 (25 °C, 106 g/L)

mp

851 °C (lit.)

anion traces

chloride (Cl^-): ≤10 mg/kg
phosphate (PO₄^3-): ≤10 mg/kg
silicate (as SiO₂): ≤20 mg/kg

cation traces

Ag: ≤5 mg/kg
Al: ≤10 mg/kg
As: ≤0.5 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤50 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤20 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤20 mg/kg
Zn: ≤5 mg/kg
heavy metals: ≤5 ppm (by ICP-OES)

Quality Level

200