无水碳酸钠

等级

ACS reagent

检测方案

≥99.5% dry basis

杂质

≤0.001% Nitrogen compounds (as N)
≤0.005% Silica (SiO₂)
≤0.01% Ammonium hydroxide precipitate
≤0.01% Insoluble matter

缺失

≤1.0% loss on heating, 285°C

mp

851 °C (lit.)

痕量阴离子

chloride (Cl^-): ≤0.001%
phosphate (PO₄^3-): ≤0.001%
sulfur compounds (as SO₄^2-): ≤0.003%

痕量阳离子

Ca: ≤0.03%
Ca and Mg precipitate: ≤0.01%
Fe: ≤5 ppm
K: ≤0.005%
Mg: ≤0.005%
heavy metals (as Pb): ≤5 ppm

SMILES字符串

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

InChI

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

InChI key

CDBYLPFSWZWCQE-UHFFFAOYSA-L