Sodium hydroxide

Product Name

Sodium hydroxide, puriss., meets analytical specification of Ph. Eur., BP, NF, E524, ≥98.0%, pellets

cation traces

Pb: ≤0.5 ppm
Al: ≤0.001%
As: ≤2 ppm
Ca: ≤0.001%
Fe: ≤10 ppm
Hg: ≤1 ppm
K: ≤0.1%

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

InChI

1S/Na.H2O/h;1H2/q+1;/p-1

SMILES string

[OH-].[Na+]

vapor density

>1 (vs air)

vapor pressure

<18 mmHg ( 20 °C)
3 mmHg ( 37 °C)

grade

puriss.

assay

≥98.0%

form

pellets

quality

meets analytical specification of Ph. Eur., BP, NF, E524

impurities

residual solvents, complies
≤0.0005% total nitrogen (N)
≤0.5% Na₂CO₃
≤20 ppm heavy metals (as Pb)

mp

318 °C (lit.)

solubility

water: soluble 1260 g/L at 20 °C

anion traces

chloride (Cl^-): ≤20 ppm
phosphate (PO₄^3-): ≤0.001%
silicate (as SiO₂): ≤0.01%
sulfate (SO₄^2-): ≤30 ppm

suitability

complies for appearance of solution