For procurement managers, R&D scientists, and formulators, understanding the detailed specifications of chemical compounds is critical for making informed purchasing decisions. Succinic Anhydride (CAS 108-30-5) is no exception. As a vital intermediate with diverse applications, its purity and quality can significantly impact the performance of downstream products. NINGBO INNO PHARMCHEM CO.,LTD., as a leading manufacturer, is committed to transparency and providing clear information about our Succinic Anhydride offerings.

Decoding Succinic Anhydride Specifications: Key Parameters

Succinic Anhydride, with the molecular formula C4H4O3, is typically supplied in two primary grades: Tech grade and Pharma grade. The choice between them depends heavily on the intended application.

1. Assay (% min): This is the primary indicator of purity. For Tech grade, a minimum assay of 98.0% is common. However, for pharmaceutical and other high-sensitivity applications, a Pharma grade with a minimum assay of 99.50% is often required. This signifies a much lower level of impurities.

2. Free Succinic Acid (% max): As an anhydride, the presence of its parent acid (succinic acid) is a key impurity to monitor. Lower levels are always preferred. Tech grade might allow up to 1.20% max, while Pharma grade is typically held to a much stricter limit of 0.20% max.

3. Unsaturates (% max): This refers to the presence of unsaturated compounds, which can affect reactivity and stability. A limit of 1.50% for Tech grade is common, tightened to 0.10% for Pharma grade.

4. Sulfide (ppm max): Indicating sulfur-based impurities, typically limited to 500 ppm for Tech grade and 400 ppm for Pharma grade.

5. Chloride (ppm max): Another common impurity, with limits of 200 ppm for Tech grade and 150 ppm for Pharma grade.

6. Residue on Ignition (% max): This measures inorganic impurities. A very low limit of 0.02% for Tech grade and 0.01% for Pharma grade highlights the need for minimal inorganic contamination.

7. Heavy Metals (ppm max): Crucial for pharmaceutical applications, heavy metal content is strictly controlled. Tech grade may have a limit of 18 ppm, while Pharma grade is typically restricted to 10 ppm.

Why These Specifications Matter When You Buy Succinic Anhydride

For pharmaceutical applications, the presence of even trace impurities can lead to undesired side reactions, reduced efficacy, or even toxicity. In agrochemicals, impurities might affect the stability or biological activity of the final product. For coatings and resins, impurities can alter color, cure rates, or mechanical properties. Therefore, when you purchase Succinic Anhydride, ensuring it meets the specifications relevant to your application is paramount.

Partnering with a Reliable Supplier

NINGBO INNO PHARMCHEM CO.,LTD. offers both Tech and Pharma grades of Succinic Anhydride, clearly defined by these parameters. We provide comprehensive documentation, including detailed specifications and Certificates of Analysis, to support your quality assurance processes. As a leading chemical supplier and manufacturer, we are dedicated to delivering products that meet your exact needs. Contact us today for a price inquiry on our high-quality Succinic Anhydride and discover a reliable partner for your chemical sourcing requirements.