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Certificate of Analysis
Product Name: Sodium poly[(naphthaleneformaldehyde)sulfonate] Catalogue Number: GR-22833430
Batch Size: 900KG Lot Number: 20230208
CAS Number: 9084-06-4 Production Date:
Molecular Formula: C21H14Na2O6S2 Report Date: 2023-02-08
Molecular Weight: 472.4 Expiry Date:
Storage: Room temperature, Protected from light and Sealed


Test Items Specifieation Results
Appearance Beige powder Conforms
Solid Content ≥93.0% 94.0%
Dispersing Power ≥105% 110%
Degree of Polymerization Low Conforms
Sodium Sulfate Content ≤5.0% 4.5%
pH (10% Aqueous Solution) 8~10 9
Insoluble Matter ≤0.05% 0.01%
Calcium and Magnesium Ion ≤0.4% 0.3%
Iron(as Fe₂O₃) ≤0.01% 0.01%
Formaldehyde ≤200 ppm 10 ppm
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