GB12594-2008

Working chemical - Potassium bromate

工作基准试剂溴酸钾

GB 12594-2008 est une norme nationale chinoise obligatoire en vigueur : Working chemical - Potassium bromate. Secteur : Électronique. Thème principal : Sécurité des produits. Entrée en vigueur : 1 juin 2009.

L’applicabilité dépend du périmètre du produit, de la voie de certification, des avis des autorités et des règles de transition. Demandez une traduction ou vérifiez la source avant d’utiliser cette fiche pour une décision de conformité.

Aperçu de conformité

Cet aperçu n’est actuellement disponible qu’en anglais.

Champ d’application

This standard applies to working chemical reagents, specifically potassium bromate used in titration analysis. It is essential for manufacturers and laboratories producing or utilizing high-purity benchmark chemicals in analytical testing. This standard is mandatory for the specification and testing of potassium bromate working benchmarks. It replaces the previous version, GB 12594-1990.

Exigences techniques

The standard outlines the physical and chemical specifications for potassium bromate, categorizing it as a working benchmark reagent. It mandates strict limits on the primary content purity and defines acceptable ranges for pH value and clarity. Compliance with these chemical parameters is strictly enforced for market access. Furthermore, the standard regulates the maximum allowable limits for various impurities to ensure analytical accuracy. This includes restrictions on drying loss, chlorides, bromides, sulfates, total nitrogen, iron, and heavy metals. The presence of these trace impurities must be carefully controlled during the manufacturing process. Safety and handling are also addressed, noting that the substance can react violently with organic matter or reducing agents. Packaging, storage, and transportation must comply with GB 15346, and labels must clearly indicate the chemical as an oxidizer according to GB 15258.

Méthodes d’essai

The standard specifies rigorous testing procedures to verify compliance. Content determination is performed using gravimetric potentiometric titration as outlined in GB 10737-2007. Other key testing methods include visual clarity tests, drying loss measurement via oven drying, and specific colorimetric or turbidimetric methods for impurities like chlorides, sulfates, and heavy metals, referencing standards such as GB/T 9729 and GB/T 9739. Manufacturers must ensure their testing facilities are equipped to perform these precise analytical procedures.

Questions fréquentes

What products are regulated under GB 12594-2008?

GB 12594-2008 regulates working chemical reagents, specifically potassium bromate intended for use as a benchmark in titration analysis.

Are there any updates from the previous version of GB 12594?

Yes, GB 12594-2008 replaces GB 12594-1990. The main changes include a modification to the standard name and an update to the method for determining the primary content of potassium bromate.

Which sections of GB 12594-2008 are mandatory?

Chapter 4 (Specifications) and clauses 5.2.1 and 5.2.2 (Content determination methods) are mandatory. All other provisions are recommended.

The summary above provides a high-level overview of GB 12594-2008. To ensure complete compliance for your chemical reagents entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 12594-2008 today to access all detailed parameters, tables, and testing procedures.

Indications d’applicabilité

Type: Produit
CCS: G61
ICS: 71.040.30
Autorité compétente: Ministry of Industry and Information Technology
Comité technique: Ministry of Industry and Information Technology

Relations

Remplace:GB 12594-1990