GB19307-2003

Paraquat technical concentrates

百草枯母药

GB 19307-2003 es una norma nacional china obligatoria vigente: Paraquat technical concentrates. Sector: Alimentos. Enfoque: Seguridad de productos. Entrada en vigor: 1 jun 2004.

La aplicabilidad depende del alcance del producto, la vía de certificación, los avisos de la autoridad competente y las reglas de transición. Solicite una traducción o verifique la fuente antes de usar esta ficha en una decisión de cumplimiento.

Resumen de cumplimiento

Este resumen está disponible por ahora solo en inglés.

Alcance y aplicabilidad

This standard applies to paraquat technical concentrates composed of paraquat, production impurities, and emetics. It is mandatory for manufacturers producing paraquat technical concentrates in China. It does not apply to formulated paraquat products intended for direct end-use. The standard references packaging guidelines from GB 3796.

Requisitos técnicos

The standard specifies the physical and chemical requirements for paraquat technical concentrates. Chapter 3 and Chapter 5 are mandatory. The product must be a homogeneous liquid. Key technical parameters include the mass fraction of paraquat cation, the mass ratio of paraquat cation to the emetic triazolopyrimidone, and the maximum allowable limit for the impurity 4,4'-bipyridine. Manufacturers must strictly control the pH range and water insoluble content to meet compliance. The standard also details specific safety and packaging requirements, mandating the use of plastic or plastic-lined iron drums to prevent direct metal contact.

Métodos de ensayo

The standard outlines several analytical methods for quality control. Paraquat content is determined using High-Performance Liquid Chromatography (HPLC) as the arbitration method, or alternatively by colorimetry. The mass ratio of paraquat to the emetic is verified via HPLC, while the impurity 4,4'-bipyridine is also quantified using HPLC. Testing for water insolubles requires a specific gravimetric method using a glass sand core crucible. pH value determination follows the procedures outlined in GB/T 1601.

Preguntas frecuentes

What products are regulated under GB 19307-2003?

GB 19307-2003 regulates paraquat technical concentrates, which are the intermediate products containing paraquat, impurities, and emetics, not the final formulated herbicides.

Are there any mandatory chapters in GB 19307-2003?

Yes, Chapter 3 (Requirements) and Chapter 5 (Marking, Labeling, Packaging, and Storage) are mandatory. Compliance with these chapters is legally required for market access in China.

What are the key technical parameters specified in GB 19307-2003?

The standard specifies limits for the mass fraction of paraquat cation, the ratio to the emetic triazolopyrimidone, the impurity 4,4'-bipyridine, water insolubles, and the pH range.

The summary above provides a high-level overview of GB 19307-2003. 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 19307-2003 today to access all detailed parameters, tables, and testing procedures.

Indicaciones de aplicabilidad

Tipo: Producto
CCS: G25
ICS: 65.100.20
Organismo competente: Ministry of Agriculture and Rural Affairs
Comité técnico: Ministry of Agriculture and Rural Affairs