Ammonium Polynaphthalenesulfonate
time:2015-08-22 13:33:31,count:0
Characteristics    excellent dispersing, emulsifying, wetting abilities. Certain resistance to inorganic electrolytes.
Synthesis
Naphthalenesulfonic acid and formaldehyde react through the polycondensation reaction, then ammonia water 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%)
3.0 - 7.0
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