无水碳酸钠，Sodium carbonate；puriss., meets analytical specification of Ph. Eur., BP, NF, FCC, E500, anhydrous, 99.5-100.5% (calc. to the dried substance)

质量水平

200

等级

puriss.

测定

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

形式

powder or crystals

质量

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

杂质

alkali hydroxides and bicarbonates, complies
residual solvents
<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 mg/kg
sulfate (SO₄^2-): ≤50 mg/kg

痕量阳离子

As: ≤2 mg/kg
Cu: ≤20 mg/kg
Fe: ≤10 mg/kg
Hg: ≤1 mg/kg
Pb: ≤4 mg/kg
Pb: >2 ppm
Zn: ≤20 mg/kg

适用性

complies for appearance of solution

储存温度

15-25°C

SMILES string

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

象形图

GHS07

警示用语：

Warning

危险声明

H319

预防措施声明

P264 - P280 - P305 + P351 + P338 - P337 + P313

危险分类

Eye Irrit. 2

储存分类代码

13 - Non Combustible Solids

WGK

WGK 1