3911 9099 70

3911909970

Aqueous solution containing by weight: -|30|% or more but not more than 40|% of poly-4-vinylpyridine-N-oxide, -|0,1|% or more but not more than 4|% of isonicotinic acid-N-oxide, -|0,1|% or more but not more than 3,5|% of sodium sulphate, -|0,1|% or more but not more than 2|% of 4-acetylpyridine-N-oxide