dispersing agent tanning agent ceramics additives
Sodium lignosulphonate
CAS#: 8061-51-6
The sodium lignosulphonate, which is prepared from alkaline pulping black liquor through filtration, sulfonation, concentration and spray drying, and is a powdery low air-entrained set retarding and water reducing admixture, belongs to an anionic surface active substance, has absorption and dispersion effect on the cement, and can improve various physical properties of the concrete.
Indicators:
Appearance: Black or brown powder
Reducing substance: NMT 7%
Moisture: NMT 6%
pH value: 8.5 - 10.5
Water insolubles: NMT 1.5%
Inorganic salt (Na2SO4): NMT 4.0%
Total content of Ca and Mg: NMT 1.5%
Lignosulphonate: 45% - 60%
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