K-BIO® C515 PRESERVATIVE is a high performance liquid organic biocide recommended for use in: paints and coatings, adhesives, polymer emulsions, latexes, mineral and pigment slurries and dispersions, water-based building compounds, sealants and caulks and pesticides for non-food applications (including fungicides and algaecides) and oil in water emulsions.
K-BIO® C515 preservative offers many advantages. The mix of active ingredients in K-BIO® C515 PRESERVATIVE has a proven performance record as a broad-spectrum antimicrobial agent. The spectrum of antimicrobial activity for K-BIO® C515 PRESERVATIVE includes a wide range of commonly occurring bacteria, yeast and fungi. K-BIO® C515 PRESERVATIVE is effective over the entire pH range normally encountered in paints. It does not impart color or odour.
Typical Properties
| Active Ingredient:
5-Chloro-2-methyl-4-isothiazolin-3-one 2-Methyl-4-isothiazolin-3-one Total Active Ingredients: |
(CIT) 1.11%
(MIT) 0.39% 1.50% |
| Physical Form | Clear Yellow. – Green. to Light Blue. |
| pH | 4 to 6 [Conc. (% w/w): 1%] |
| Density | 1.024 g/cm³ [20°C (68°F)] |
Antimicrobial Spectrum
Minimum inhibitory concentrations (MIC) were determined by serial dilution of K-BIO® C515 PRESERVATIVE
are shown in the table.
| Minimum Inhibitory | |
| Fungi | Concentration |
| (ppm) | |
| Aspergillus niger | >750 |
| Aspergillus oryzae | 750 |
| Chaetomium globosum | 600 |
| Gliocladium fimbriatum | >750 |
| Mucor rouxii | >750 |
| Penicillium funiculosum | 750 |
| Aureobasidium pullulans | >750 |
| Rhizopus stolonifer | 750 |
| Yeast | 600 |
| Candida albicans | |
| Rhototorula rubra | 600 |
| Saccharomyces cerevisiae | 600 |
| Bacteria | |
| Gram-Positive | 600 |
| Brevibacterium ammoniagenes | |
| Bacillus cereus | 600 |
| Bacillus subtilis | 600 |
| Sarcina lutea | 600 |
| Staphylococcus aureus | 750 |
| Staphylococcus epidermidis | 600 |
| Staphylococcus agalactiae | 600 |
| Gram-Negative | 300 |
| Achromobacter parvulus | |
| Alcaligenes faecalis | 300 |
| Enterobacter aerogenes | 600 |
| Escherichia coli | 600 |
| Flavobacterium suaveolens | 600 |
| Klebsiella pneumoniae | 600 |
| Proteus vulgaris | 600 |
| Pseudomonas aeruginosa | 600 |
| Pseudomonas cepacia | 600 |
| Pseudomonas fluorescens | 600 |
| Pseudomonas oleoverans | 300 |
| Salmonella choleraesuis (typhi) | 600 |
| Shigella sonnei | 600 |
| Serratia marcescens | 600 |




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