GB20814-2014

Limit and determination of the quantity of heavy-metal elements in dye products

染料产品中重金属元素的限量及测定

GB 20814-2014 は現行の中国強制国家規格です：Limit and determination of the quantity of heavy-metal elements in dye products。業界：電子。テーマ：製品安全。施行日：2015年5月1日。

適用可否は製品範囲、認証ルート、所管当局の通知、移行規定によって異なります。コンプライアンス判断に使う前に、翻訳をご依頼いただくか公式情報源をご確認ください。

コンプライアンス概要

この概要は現在英語のみで提供しています。

適用範囲

This standard specifies the allowable limits and determination methods for 12 heavy-metal elements in dye products. It is applicable to all forms of commercial dyes, including liquid dyes and coating pastes. Manufacturers must ensure their dye products comply with these limits before entering the Chinese market. It replaces the previous version, GB 20814-2006, by adding limits for arsenic (As) and mercury (Hg).

技術要求

The standard establishes strict maximum limits for 12 specific heavy metals, including cadmium (Cd), chromium (Cr), lead (Pb), and nickel (Ni), among others. For liquid products, these limits must be calculated based on their solid content. Compliance with these specific concentration thresholds is mandatory for all commercial dyes. However, the standard notes an exception: for certain dye products where a heavy metal is an inherent part of the molecular structure, the quantity of that specific element may not be assessed. The technical framework also references GB/T 6682-2008 for water specifications and GB/T 8170-2008 for numerical rounding rules.

試験方法

The primary testing method involves digesting the dye sample using a mixed acid solution, followed by analysis using an Atomic Absorption Spectrometer (AAS). The standard outlines two main sample preparation techniques: microwave digestion and wet digestion. Different measurement techniques are specified for various elements: the flame method is used for elements like Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn, while the hydride generation method is required for As, Hg, and Sb. Laboratories must follow these specific preparation and instrumental procedures to ensure accurate compliance testing.

よくある質問

What products are regulated under GB 20814-2014?

GB 20814-2014 regulates all forms of commercial dye products, including solid and liquid dyes as well as coating color pastes. It applies to any dye product intended for the Chinese market.

Are there any updates from the previous version of GB 20814?

Yes, compared to GB 20814-2006, this 2014 version changes the title and adds specific limits for arsenic (As) and mercury (Hg). It also updates the reagents, equipment, and standard working solution preparation methods.

How are heavy metals tested according to this standard?

Heavy metals are tested by digesting the dye sample with acid and then using an Atomic Absorption Spectrometer. The standard specifies the use of the flame method for most elements and the hydride method for arsenic, mercury, and antimony.

The summary above provides a high-level overview of GB 20814-2014. To ensure complete compliance for your dye 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 20814-2014 today to access all detailed parameter tables, digestion procedures, and testing conditions.

適用のヒント

種別: 製品
CCS: G57
ICS: 71.100.01, 87.060.10
所管部門: Ministry of Industry and Information Technology
技術委員会: Ministry of Industry and Information Technology