Name: Sulfadimidine Sodium 
Alias: SM2-Na
Chemical name: N-(4,6-dimethyl-2-pyrimidinyl)-4-aminobenzenesulfonyl sodium salt 
Structural formula :

Molecular formula and molecular weight: C₁₂H₁₃N₄NaO₂S=300.31 
Quality standard: CPV2015 BP2002 
Properties: white or very slight yellow crystalline powder; odorless or almost odorless; hygroscopic; soluble in water, slightly soluble in ethanol, Assay ≥ 99%. 
Functions and Uses: Sulfonamides Antimicrobials. 
Packing: Net weight 25kg/cardboard drum; diameter36cm×47cm height

Storage: shading, sealed, stored in a dry place. 
CAS NO .: 1981-58-4 
Customs code: 2935900090 (for reference)