Potassium Polynaphthalenesulfonate
Time:2015-08-22 13:33:05,Count:0
Characteristics    excellent dispersing, emulsifying, wetting abilities. Certain resistance to inorganic electrolytes.
Synthesis
Naphthalenesulfonic acid and formaldehyde react through the polycondensation reaction, then potassium hydroxide or potassium carbonate neutralizes, finally obtain product.
Quality Standards & Test Methods
1. Physical and chemical indexes
Item
Physical and chemical indexes
Solid
Actives, %, ≥
85.0
pH (25°C, 1%)
7.0 - 9.5
Test Methods
(1), Actives
 
(2), pH
GB/T 6368 Surface active agents - Determination of pH of aqueous solution - Potentiometric method
ISO 4316 Surface active agents -- Determination of pH of aqueous solutions -- Potentiometric method
2. Hazardous substances indexes
Item
Hazardous substances indexes
Solid
Heavy metals (as Pb), mg/Kg, ≤
20
As, mg/Kg, ≤
3