DEFINITION
Sodium Succinate, when dried at 120C for 2 h, contains NLT 98.0% and NMT 102.0% of disodium succinate (C4H4Na2O4).
IDENTIFICATION
A. Infrared Absorption: To check after drying the Anhydrous Sodium Succinate or Sodium Succinate Hexahydrate sample at 120C for 2 h before use.
B. Chromatographic Identity
C. Sodium Meets the requirements.
ASSAY
Acceptance criteria: 98.0%–102.0%
IMPURITIES
Limit of Sodium Acetate, Sodium Maleate, and Sodium Fumarate:
Sodium acetate: The peak area of acetic acid in the Sample solution is NMT the peak area of acetic acid in the Standard solution, corresponding to NMT 0.2% of sodium acetate in Sodium Succinate.
Sodium maleate: The peak area of maleic acid in the Sample solution is NMT the peak area of maleic acid in the Standard solution, corresponding to NMT 0.1% of sodium maleate in Sodium Succinate.
Sodium fumarate: The peak area of fumaric acid in the Sample solution is NMT the peak area of fumaric acid in the Standard solution, corresponding to NMT 0.1% of sodium fumarate in Sodium Succinate.
Limit of Sulfate: NMT 0.019% as SO4
Acidity and Alkalinity: Dissolve 1.0 g of Anhydrous Sodium Succinate or Sodium Succinate Hexahydrate in carbon dioxide-free water and dilute with water to 20 mL. pH is 7.0–9.0
Loss on Drying: Dry at 120C for 2 h.
Sodium Succinate Anhydrous: NMT 2.0% LOD.
Sodium Succinate Hexahydrate: 37.0%–41.0% LOD.
We offer both Sodium Succinate Anhydrous and Sodium Succinate Hexahydrate.
