无水碳酸钠

产品名称

无水碳酸钠, BioUltra, anhydrous, ≥99.5% (calc. on dry substance, T)

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

anhydrous

product line

BioUltra

assay

≥99.5% (calc. on dry substance, T)

form

powder or crystals

impurities

insoluble matter, passes filter test
≤0.001% total nitrogen (N)
≤0.005% total sulfur (as SO₄)

loss

≤1.0% loss on drying, 200 °C

pH

~12.0 (25 °C, 1 M in H₂O)

mp

851 °C (lit.)

solubility

H₂O: 1 M at 20 °C, clear, colorless

anion traces

chloride (Cl^-): ≤50 mg/kg
phosphate, silicate (as SiO₂): ≤50 mg/kg

cation traces

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤200 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: ≤50 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

1 M in H₂O

UV absorption

λ: 260 nm A_max: 0.01
λ: 280 nm A_max: 0.01

Quality Level

200