Synonyms: 4-Amino-N-(2,6-dimethoxy-4-pyrimidinyl)benzenesulfonamide
Melting point: 198~199℃
Appearance: White or Light yellow crystals or powder
COA of Sulfadimethoxine Sodium Salt:
Identification:
{1)The melting point of the acidified precipitate  197-200 ° 
(2)With the color reaction of copper sulfate
(3)Aromatic first amine reaction
(4)Sodium salt
Alkalinity: Ph 10.6
Clarity and colour of solution: Clarification, lighter than orange  yellow 3 
Loss on drying: ≤2.0%
Assay: 99.8%(dry basis)
Description About Sulfadimethoxine Sodium Salt:
Sulfadimethoxypyrimidine sodium salt,  is also known as Sulfadimethoxine sodium, sulphate-6-methoxypyrimidine sodium (Daimeton sodium). It is white or off-white powder at room temperature and soluble in water and dilute mineral acid solution. When exposed to light, it is easy to deteriorate and the color gradually changes.