Sodium hydroxide

grade

ACS reagent

Quality Level

300

Agency

reag. ISO
reag. Ph. Eur.

vapor density

>1 (vs air)

vapor pressure

<18 mmHg ( 20 °C)
3 mmHg ( 37 °C)

product line

EMSURE^®

Assay

99-100% (total alkilinity calculated as NaOH)

form

pellets

impurities

≤0.0003% Total nitrogen (N)

pH

>14 (20 °C 100 g/L in H₂O)

mp

318 °C (lit.)

solubility

water: 1090 g/L at 20 °C

density

2.13 g/cm³ at 20 °C

anion traces

carbonate (as Na₂CO₃): ≤0.5%
chloride (Cl^–): ≤0.0005%
phosphate (PO₄^3-): ≤0.0005%
silicate (as SiO₂): ≤0.001%
sulfate (SO₄^2-): ≤0.0005%

cation traces

Al: ≤0.0005%
As: ≤0.0001%
Ca: ≤0.0005%
Cu: ≤0.0002%
Fe: ≤0.0005%
Hg: ≤0.00001%
K: ≤0.020%
Mg: ≤0.0005%
Ni: ≤0.0005%
Pb: ≤0.0005%
Zn: ≤0.001%
heavy metals (as Ag): ≤0.0005%
heavy metals (as Pb): ≤0.0005%

storage temp.

2-30°C

SMILES string

[OH-].[Na+]

InChI

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

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M