The product is a novel biocide containing the active ingredient N-butyl-1,2-    benzisothiazolin-3-one (BBIT). DENSIL? DN  has a broad    spectrum of activity against fungi, algae, yeast and bacteria. DENSIL? DN     can be used in many different application areas to offer dry    film and wet state preservation.    Applications    DENSIL? DN is effective in many different applications areas including:    – Acrylic Emulsions    – Polyurethane Adhesives    – Emulsion Paints    – Ink jets    – metal Working Fluid Emulsions and Concentrates    – Pigments    – Plasterboards    – Polymer Emulsions    – Sealants    – Silicone Emulsions    – Starches    – Tile Grouts    – Thickeners    MicrobialControl    DENSIL? DN     Materials Protection    S    N    O2    Microbial Control    DENSIL? DN     Technical Information Notes for Materials Protection    l Properties    Table1. Minimum Inhibitory Concentrations (MIC)    Micro-organism    ppm Product    Fungi    Alternaria alternata    25    Aureobasidium pullulans    4    Aspergillus niger    16    Chaetomium globosum    1.6    Cladosporium cladosporoides    19    Cladosporium herbarum    2.3    Gliocladium virens    62    Paecilomyces variotti    4    Penicillium funiculosum    3    Phoma violacae    2    Scopulariopsis brevicaulis    37    Trichoderma viride    50    Algae    Chlorella vulgaris    16    Nostoc muscorum    16    16Oscillatoria tenuis    16    Pleurococcus sp.    16    Trentepohlia aurea    16    Yeast    Candida albicans    19    Rhodoturula mucilaginosa    4    Saccharomyces cerevisiae    0.4    Bacteria    Acinetobacter baumanii    14    Alcaligenes faecalis    20    Bacillus subtilis    4    Corynebacterium sp.    1.4    Escherichia coli    87.5    Flavobacterium capsulatum    11    Klebsiella pneumoniae    137    Lactobacillus brevis    2.1    Proteus mirabilis    137    Pseudomonas aeruginosa    200    Staphylococcus aureus    2.5    Streptomycetes    Streptoverticillium waksmanii    23    Table 2. Typcial Physical Properties of DENSIL? DN    Active Agent Content (%)    97% w/w min BBIT    Physical Form    Liquid    Bulk Density at 25°C    1.17g/ml    pH at 25°C    N/A    Viscosity cP    (Brookfield LV 12rpm    spindle 3 @ 2°C)    90    Water Content<0.5%    Storage Stability    Stable under normal conditions of storage. If    frozen, allow to thaw before use. Active agent is    heat-stable and non-volatile.    Colour    Yellow    Vapour Pressure @25°C    0.015 Pa    Flash Point    178°C    Odour    Mild or none    Compatibility    The active ingredient BBT is incompatible with    thiols, bleach and metabisulphites. Compatible and    effective over pH range 2-12. Good stability in the    presence of amines.    Amount to Use    DENSIL? DN  should be added to the system as early in the    process as possible. The concentration to adequately preserve your produ0002    uct depends on several factors. These include the susceptibility of the sysu0002    tem to microbiological degradation, the extent to which micro-organisms    can gain access, the species involved, pH, temperature, and length of time    for which protection is required.    A range of concentrations and applications is given in Table 3; however, it    is recommended that a testing programme be undertaken to determine    the most cost-effective dose for your application.    Testing should take into account chemical compatibility/stability, plant    hygiene conditions, susceptibility of the product to contamination, and the    typical organisms involved.    The Lonza Technical Service Group can provide additional guidance on    the proper use of DENSIL? DN  for your particular application.    Table 3. Application Information    Application    Concentration    (% based on total weight of final    product)    Acrylic Emulsions    0.03 to 0.05    Adhesives    0.1 to 0.3    Emulsion Paints    0.03 to 0.05    Ink Jets    0.1 to 0.25    metal Working Fluid Concentrates    0.1 to 0.3    Pigments    0.025 to 0.05    Plasterboard    0.1 to 0.3    Polymer Emulsions    0.025 to 0.05    Sealants    0.1 to 0.3    Silicones    0.05 to 0.3    Starches    0.1 to 0.3    Tile Grouts    0.1 to 0.3    Thickeners    0.1 to 0.3