2-Hydroxypyridine-N-oxide (Oxy

Application
Use 2-Hydroxypyridine-N-oxide, reduced sodium as preservative in combination
with other biocides to obtain the best possible antimicrobial effect.
Benefits
■ Combine 2-Hydroxypyridine-N-oxide, reduced sodium with non-ionic
detergents or proteins.
■ Use 2-Hydroxypyridine-N-oxide, reduced sodium in your preferred combination
in liquid reagents to obtain the most stable system.
■ Rely on the strongly reduced concentration of sodium.
CAS: 13161-30-3
Properties
Formula: C5H5NO2
Molecular weight: 111.10 D
Antimicrobial effect: Broad effect
Possible combination: Can be combined with other biozides
Interferences: Production of chelats with heavy metal ions
Toxicity: Harmless in recommended working concentrations; not carcinogenic
or mutagenic (Ames-test negative).
Recommended working concentration: 1.3 mg/ml
pH optimum: 5.0-8.0
Stability: Stable
Specification
Appearance: White to beige, crystalline powder
Solubility: Clear solution in water (c=1 mg/ml)
A405 (c=1 mg/ml water, against water) : ≤0.010
Identity (NIR): Corresponds to reference
2-Hydroxypyridine-N-oxide (from C) : 99-101%
C (elementary analysis): 53.5-54.6%
Water (K. Fischer): ≤0.5%
Heavy metals (as Pb): ≤10 ppm
Fe (AAS): ≤10 ppm
Al (AAS): ≤10 ppm
Na (AAS): ≤70 ppm
2-Propanol: ≤0.2%
Stability: At +4°C to +8°C within specification range for 12 months. Protect
from light.