Germall 115

Application
Use Germall 115 as preservative in combination with other biocides to obtain
the best possible antimicrobial effect.
Benefits
■ Combine Germall 115 with non-ionic, ionic detergents or proteins.
■ Use Germall 115 in your preferred combination in liquid reagents to
obtain the most stable system.
CAS: 39236-46-9
Properties
Formula: C11H16N8O8 × H2O
Molecular weight: 406.31 D
Solubility: Easily soluble in water and glycerol; soluble in ethanol 40%; insoluble
in ethanol 100%.
Antimicrobial effect: Only moderate effect against fungi and yeast; should be
used in combination.
Possible combination: Can be combined with all biozides which do not seperate
formaldehyde, especially 5-bromo-5-nitro-1,3-dioxane (BND), 2-hydroxypyridine-
N-oxide (HPO) or N-methylisothiazolone (MIT).
Effect: Belongs to the ''formaldehyde-depot-substances''. Inactivating effect
due to reactions with -COOH, -NH2, -OH and -SH of all proteins.
Toxicity: Harmless at recommended concentrations; not carcinogenic or mutagenic
(Ames-test negative).
Recommended working concentration: 2.6 mg/ml
pH optimum: 4.5-8.5
Stability: At pH 6 and heating >+60°C this product decomposes with separation
of formaldehyde.
Specification
Appearance: Fine white crystalline powder
Solubility: Clear, colorless solution in water (c=1%, w/v)
pH value (c=1%, w/v): 6.0-7.5
Identity (NIR-spectrum): Corresponds to reference
Germall 115 (from N): ≥94%
Water (K. Fischer): ≤6%
HPLC: Corresponds to reference
Heavy metals (as Pb): ≤20 ppm
Reducible components (calculated as H2O2): ≤0.03%
Oxidizable components (calculated as O): ≤0.2%
Formaldehyde (Nash, photometrically): ≥9.0%
Stability: At +15 to +40°C within specification range for 36 months. Store dry
in tightly sealed containers.