NOPCO 223
Paper coating defoamer
NOPCO 223 is a powerful foarn control agent with excellent carry-through properties. Effective, versatile and silicone-free, this product functions as an antifoamer and defoamer in all types of aqueous coatings. NOPCO 267-A is readily dispersible, devoid of spotting characteristics and is effective on all types of paper and paperboard coaters.
TYPICAL PROPERTIES    
Appearance
:
 Opaque, off-white liquid
Specific Gravity
:
 0.86 - 0.90
Viscosity, Brookfield,at 25'
:
 500 - 2000 rnpas
pH (2% solution, 25'DC)
:
 5.5 - 7.5
Solubility
:
 Emulsifiable in water
Odour
:
 Odourless
APPLICATION

NOPCO 223 should be properly dispersed in the coating to prevent problems with fisheyes or spotting. Application rates will vary according to coating formulation but normally 0.1 to 0.3% on dry pigment is sufficient.
FDA STATUS

NOPCO 223 is considered to comply with the following sections of 21 CFR:
175.105 Adhesives
176.200 Defoaming agents used in coatings
176.210 Defoarning agents used in the manufacture of paper and paperboard
PACKAGING, STORAGE AND HANDLING

Under prolonged storage of NOPCO 223, some slight sedimentation may occur so the product should be stirred before use.
The perforrnance of NOPCO 223 is not affected by frost. It the product is exposed to temperatures below OOC it should be warmed to room temperature and mixed thoroughly.
In hot climates, the product should be stored in the shade and, preferably, inside a building