GB21694-2017

Feed additive―Zinc methionine complex (chelate)

饲料添加剂蛋氨酸锌络（螯）合物

GB 21694-2017 é uma norma nacional chinesa obrigatória vigente: Feed additive―Zinc methionine complex (chelate). Setor: Alimentos. Foco: Segurança de produtos. Entrada em vigor: 1 de mai. de 2018.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

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.

Requisitos técnicos

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.

Métodos de ensaio

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.

Perguntas frequentes

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.

Indicações de aplicabilidade

Tipo: Produto
CCS: B46
ICS: 65.120
Órgão competente: Ministry of Agriculture and Rural Affairs
Comitê técnico: Ministry of Agriculture and Rural Affairs

Relações

Substitui:GB/T 21694-2008