Item

Tolerance

Appearance

White or off-white powder

Odor

Slight characteristic odor

Identification

The substance dissolves

Nitrogen

11.5% ~12.8%

Active Matter

>=95.0%

pH (5% in water)

5.0~9.0

K-value

88.0~96.0

Vinylpyrrolidinone

<=0.01%

Residue on Ignition

<=0.05%

Loss on Drying

<=5.0%

Viscosity (20% water solu.)

10000-30000 (Brookfield, RVT 23degree, Spindle 7/100 rpm)

Heavy Metals (as Pb)

<=10 ppm

Arsenic *

<=2 ppm

* This Test Is Verified on Random Samples Only.