KopthioneNa is widely used preservative for water-based metal working fluids and as mould and mildewcide in gypsum boards. Its activity spectrum provides for control of fungal growth. It is a highly effective microbiocide even at very low usage levels.

Product Information:

Composition:A stable water-based dispersion of Sodium Pyrithione (Sodium 2-pyridinethiol-1-oxide)

Appearance:Dark yellow to amber brown solution

SoduimPyrithione:40 to 42%

pH:8.5 to 10.5

Density:1.35 to 1.45 g/cm3

Solubility:Freely soluble in water

Refractive index:1.477 to 1.487

Application:

Used as biocide in aqueous functional fluids, latex emulsions, aqueous fibre lubricants and inks, jet printer inks, laundry rinse additives and detergents, carpet cleaners, analytical and diagnostic reagents.

Used as in can preservatives for water based mixtures used in making concrete.

Antimicrobial efficacy:

Kopthione Na 40% FPS possesses a broad spectrum of antifungal and antialgal activity against all fungi and algae including following relevant organisms.

Name of Microorganism:

Bacteria:

Pseudomonas aeruginosa

Fungi:

Aspergillus niger

Fusarium sp

Cephalosporium

Addition and compatibility:

Sodium Pyrithione is stable under normal environmental conditions if stored in closed, dark containers. At 1000C it is stable for 24 hours. In the light or in contact with weak oxidizing agents sodium Pyrithione is converted to the disulfide; 2,2 ?pyridyl-N-oxide disulfide. With stronger oxidizing agents or in alkaline solution the substance is converted via a number of intermediatesto the sulfonic acid.