What is Oamiguard BZ Preservative & Mildewcide?

Oamiguard BZ is a dual-active broad-spectrum biocide used to protect industrial water-based products against deterioration by bacteria, yeasts and fungi, such as latex emulsions, paints, water-based adhesives, aqueous slurries (such as titanium dioxide and clay) and tape joint compounds. It is an aqueous dispersion of 1,2-benzisothiazolin-3-one and zinc pyrithione, whose very different modes of action make it particularly effective in preventing bacterial and fungal deterioration.

Physical & Chemical Parameters

Composition	Aqueous dispersion of 1,2-benzisothiazolin-3-one and zinc pyrithione
Physical form	Uniform dispersion
Viscosity (25 ℃)	3000 - 5000 mPa·s
pH (25 ℃)	5.0 - 8.5
Boiling point	approx. 100 ℃
Flash point	Boils without flash point
Density (25 ℃)	1.08 g/ml
Storage	Stable under normal storage conditions down to 0 ℃; if frozen, thaw and stir thoroughly before use; the active agents are heat-stable and non-volatile
Compatibility	Compatible and effective in the pH range 4-12; stable in the presence of amines; incompatible with certain oxidizing and reducing agents (persalts, sulfites, etc.)

Minimum Inhibitory Concentration (MIC)

Bacteria	MIC* (ppm)
Alcaligenes faecalis	5
Escherichia coli	30
Pseudomonas aeruginosa	40
Staphylococcus aureus	20
Mold	MIC* (ppm)
Alternaria alternata	225
Aspergillus niger	300
Cladosporium cladosporioides	30
Yeast	MIC* (ppm)
Candida albicans	55
Saccharomyces cerevisiae	115

Recommended Dosage

Application	Dosage % (W/W)
Polymer latexes (acrylate, butadiene, PVA and styrene-based polymer lattices)	0.04 - 0.7
Paints and inks	0.025 - 0.8
Adhesives (carboxymethyl cellulose and its derivatives, animal glue, gelatin and latex-based adhesives)	0.04 - 0.85
Aqueous mineral slurries (calcium carbonate, clay, titanium dioxide)	0.025 - 0.25
Tape joint compounds (wallboard, putty and drywall joint products)	0.05 - 0.8
Pigment dispersions	0.05 - 0.85