GB7300.103-2020
Feed additives—Part 1：Amino acids, their salts and analogues—Methionine hydroxy analogue
饲料添加剂 第1部分：氨基酸、氨基酸盐及其类似物 蛋氨酸羟基类似物
GB 7300.103-2020 is a current mandatory Chinese national standard for Feed additives—Part 1：Amino acids, their salts and analogues—Methionine hydroxy analogue. It appears in the Food compliance cluster with a product safety focus and has an implementation date of Dec 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 specifically to the feed additive methionine hydroxy analogue (2-hydroxy-4-methylthiobutyric acid) produced via chemical synthesis using acrolein, methyl mercaptan, and hydrocyanic acid as primary raw materials. It is applicable to manufacturers and importers of liquid amino acid analogues intended for animal feed within the Chinese market. It does not cover solid methionine products or other amino acid salts.
Technical requirements
The standard specifies stringent physical and chemical requirements for the product. Physically, it must appear as a brown or dark brown viscous liquid with a characteristic odor, and it carries a strong corrosive warning. Chemically, it sets minimum purity thresholds for the active methionine hydroxy analogue content. Furthermore, the standard regulates safety by establishing maximum limits for contaminants such as arsenic and general heavy metals (calculated as Pb). It also restricts the presence of ammonium salts and strictly mandates that cyanides must not be detected. Compliance with these technical indicators is mandatory for market access.
Testing methods
The standard outlines specific analytical procedures, including an oxidation-reduction titration method to determine the active ingredient content. Contaminant testing involves dry ashing preparation followed by specific determination methods for arsenic (referencing GB/T 13079-2006), and a colorimetric limit test for heavy metals using sodium sulfide. Additionally, it specifies distillation and colorimetric comparison for ammonium salts, and a specific chemical spot test using alkaline ferrous sulfate paper to verify the absence of cyanides.
FAQs
What products are regulated under GB 7300.103-2020?
This standard applies to chemically synthesized feed additive methionine hydroxy analogue produced using acrolein, methyl mercaptan, and hydrocyanic acid as the main raw materials. Manufacturers importing or producing this specific liquid amino acid analogue for animal feed in China must comply.
Are there any updates from the previous version of this standard?
The new standard replaces GB/T 19371.1-2003. Key updates include modifying the arsenic limit, deleting the lead index and replacing it with a general heavy metal requirement, removing the pH value parameter, and extending the shelf life to 60 months.
Is compliance with GB 7300.103-2020 mandatory?
Chapters 1, 3, and 5 of GB 7300.103-2020 are mandatory, while the remaining chapters are recommended. Compliance with the technical requirements in Chapter 3 is legally required.
The summary above provides a high-level overview of GB 7300.103-2020. 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 7300.103-2020 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 19371.1-2003