GB12597-2008

Working chemical - Benzoic acid

工作基准试剂苯甲酸

GB 12597-2008 est une norme nationale chinoise obligatoire en vigueur : Working chemical - Benzoic acid. 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 is applicable to the inspection of working chemical benzoic acid used in titration analysis. It specifies the properties, specifications, testing methods, inspection rules, and packaging requirements for this specific chemical reagent. It is mandatory for manufacturers producing working-grade benzoic acid for analytical purposes in China. The standard is not intended for general industrial or food-grade benzoic acid.

Exigences techniques

The standard outlines the physical and chemical specifications for working chemical benzoic acid. It mandates strict purity requirements, with the content of C6H5COOH required to fall within a highly specific range. Additionally, the standard sets limits on the melting point range and clarity of the reagent. Compliance with these physical parameters is essential to ensure the reagent's reliability as a titration standard. Regarding chemical impurities, the standard defines maximum allowable limits for several critical categories, including ignition residue, chlorine compounds, and sulfur compounds. It also restricts the presence of trace metals such as iron and heavy metals (as Pb). Manufacturers must ensure their products meet these stringent impurity thresholds to qualify as working-grade reagents. Furthermore, the standard specifies requirements for reducing potassium permanganate substances and easily carbonizable substances. These parameters ensure the chemical stability and purity of the benzoic acid during analytical procedures.

Méthodes d’essai

The testing procedures involve several standardized methods to verify compliance. The content determination is performed using a gravimetric potentiometric titration method, referencing GB 10737-2007. Melting point range is measured according to GB/T 617. Impurity tests for chlorides, sulfates, and iron follow the general methods outlined in GB/T 9729, GB/T 9728, and GB/T 9739, respectively. All tests must be conducted using reagents and water meeting the specified grade requirements to ensure accuracy.

Questions fréquentes

What products are regulated under GB 12597-2008?

GB 12597-2008 regulates working chemical benzoic acid specifically used for titration analysis. It does not apply to industrial or food-grade benzoic acid.

Are there any updates from the previous version of GB 12597-2008?

Yes, this version replaces GB 12597-1990. The main changes include the modification of the standard name to 'Working chemical-Benzoic acid' and an update to the content determination method.

Is GB 12597-2008 a mandatory standard?

Yes, Chapter 4 and clauses 5.3.1 and 5.3.2 of GB 12597-2008 are mandatory, while the other provisions are recommended.

The summary above provides a high-level overview of GB 12597-2008. 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 12597-2008 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 12597-1990