无水碳酸钠

质量水平

100

等级

puriss.

方案

99.5-100.5% (calc. to the dried substance)

表单

powder

质量

meets analytical specification of Ph. Eur., BP, NF, FCC, E500

杂质

alkali hydroxides and bicarbonates, complies
residual solvents, complies
≤5 ppm heavy metals (as Pb)

缺失

≤0.5% loss on drying, 300 °C
<0.5% loss on drying, 105°C, 4hrs

pH值（酸碱度）

12 (25 °C, 106 g/L)

mp

851 °C (lit.)

痕量阴离子

chloride (Cl^-): ≤100 ppm
sulfate (SO₄^2-): ≤50 ppm

痕量阳离子

As: ≤0.0002%
Cu: ≤0.002%
Fe: ≤0.001%
Hg: ≤0.0001%
Pb: ≤0.0002%
Zn: ≤0.002%

适用性

complies for appearance of solution

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