GB7303-2018
Feed additive—L-Ascorbic acid （Vitamin C）
饲料添加剂 L-抗坏血酸（维生素C）
GB 7303-2018 is a current mandatory Chinese national standard for Feed additive—L-Ascorbic acid （Vitamin C）. It appears in the Food compliance cluster with a product safety focus and has an implementation date of Jan 1, 2020.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to feed additive L-Ascorbic acid (Vitamin C) produced via fermentation of D-sorbitol followed by chemical synthesis. It specifies the requirements, testing methods, and labeling for this specific product. It is mandatory for all manufacturers producing Vitamin C feed additives in China. The standard replaces the previous version GB/T 7303-2006.
Technical requirements
The standard outlines the physical and chemical requirements for L-Ascorbic acid (Vitamin C). The product must appear as white to slightly yellow crystals or crystalline powder, odorless with an acid taste. Manufacturers must ensure the content of L-Ascorbic acid falls within the specified percentage range. Key technical parameters include melting point, specific rotation, and ignition residue. Furthermore, the standard sets strict safety limits for heavy metals (as Pb) and total arsenic (as As) to ensure feed safety. The shelf life for unopened original packaging under specified storage conditions is defined as 24 months.
Testing methods
Testing procedures involve sensory inspection and specific chemical identification methods using reagents like silver nitrate and 2,6-dichloroindophenol sodium. The content of L-Ascorbic acid is determined through an iodometric titration method. Other testing methods include the determination of melting point according to GB/T 617, specific rotation according to GB/T 613, and the measurement of heavy metals and total arsenic following their respective national standards. Accurate execution of these testing methods is crucial for compliance verification.
FAQs
What products are regulated under GB 7303-2018?
GB 7303-2018 regulates feed additive L-Ascorbic acid (Vitamin C) synthesized from D-sorbitol.
Are there any updates from the previous version of GB 7303?
Yes, compared to GB/T 7303-2006, the updated standard adjusts the content range of L-Ascorbic acid, changes the heavy metal limit to a specific lead limit, adds a total arsenic requirement, and extends the shelf life to 24 months.
Is GB 7303-2018 a mandatory standard?
Yes, Chapters 1, 4, and 6 of this standard are mandatory, while the remaining chapters are recommended.
The summary above provides a high-level overview of GB 7303-2018. To ensure complete compliance for your feed additive products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 7303-2018 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- B46
- ICS
- 65.120
- Competent department
- Ministry of Agriculture and Rural Affairs
- Technical committee
- Ministry of Agriculture and Rural Affairs
Relationships
Replaces:GB/T 7303-2006