GB21694-2017
Feed additive―Zinc methionine complex (chelate)
饲料添加剂 蛋氨酸锌络（螯）合物
GB 21694-2017 is a current mandatory Chinese national standard for Feed additive―Zinc methionine complex (chelate). It appears in the Food compliance cluster with a product safety focus and has an implementation date of May 1, 2018.
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 additives specifically formulated as Zinc methionine complex(chelate) with molar ratios of 2:1 or 1:1, synthesized from zinc sulfate and methionine. It is mandatory for manufacturers producing these specific trace mineral supplements for animal nutrition. The standard does not cover other types of zinc additives or non-chelated zinc compounds.
Technical requirements
The standard outlines the physical appearance and chemical composition requirements for Zinc methionine complex(chelate). It specifies that the product must be a white or off-white powder without any caking or mold, possessing a slight characteristic odor of methionine. Manufacturers must adhere to strict technical indicators including minimum thresholds for zinc and methionine content, as well as chelation rates. The standard also defines maximum limits for moisture content and particle size to ensure product stability and handling properties. Crucially, the standard sets mandatory safety limits for heavy metal contaminants, specifically total arsenic, lead, and cadmium. These parameters are critical for ensuring the safety of animal feed and preventing toxic accumulation in the food chain.
Testing methods
The standard mandates specific testing protocols, including sensory evaluation and chemical identification using reagents like methanol and chloroform. Quantitative analysis involves iodometric titration for methionine content and references HG 2934-2000 for zinc determination. Chelation rate is measured according to GB/T 13080.2, while heavy metals (arsenic, lead, cadmium) are tested using respective national standard methods. Moisture and particle size are determined using GB/T 6435 and GB/T 5917.1.
FAQs
What products are regulated under GB 21694-2017?
It regulates feed additives known as Zinc methionine complex(chelate) with molar ratios of 2:1 or 1:1.
Are there any updates from the previous version of GB 21694-2017?
Yes, it replaces GB/T 21694-2008, adding chelation rate indicators for 1:1 ratio products and tightening limits for moisture, arsenic, lead, and cadmium in 2:1 ratio products.
Is GB 21694-2017 a mandatory standard?
Yes, Chapters 1, 3, and 5 are mandatory, covering scope, technical requirements, and inspection rules.
The summary above provides a high-level overview of GB 21694-2017. To ensure complete compliance for your 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 21694-2017 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 21694-2008