GB/T 1652-2014Naphthol AS (English PDF)

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 1652-2006 "Naphthol AS", compared with the GB/T 1652-2006, the main technical changes are as follows:

--- Increase the warning (see standard start);

--- Increased CASRN. 92-77-3 (see Chapter 1);

--- Removed on cotton fiber and large red fluid coupling diazo group G after dyeing shade of indicators and measurement methods (2006 edition Chapter 3, 5.7);

--- Delete the index and determination on cotton fiber and large red fluid coupling diazo group G after staining intensity (2006 edition Chapter 3, 5.7);

--- Modify all the test items for the factory inspection items (see 6.1; 2006 version 6.1). The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee Dye (SAC/TC134) centralized. This standard was drafted. Xiasha Hengsheng Chemical Co., Ltd., Shenyang Chemical Research Institute Co., Ltd., the State Quality Supervision, Inspection dye center. Drafters of this standard. Long Yan, Han Xiaoqin, Li Xin, Park grams Zhuang Zhou Yu Chung. This standard replaces the standards previously issued as follows:

--- GB 1652-1979, GB 1652-1994, GB/T 1652-2006. Naphthol AS Warning. Use of this standard shall have practical experience of laboratory personnel work. This standard does not point out all of the safety issues. user We have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

GB/T 1652-2014 is the Chinese national standard on naphthol as, in the field of chemical technology. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 8 July 2014 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 December 2014. Classification: ICS 71.100.01, CCS G57. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This standard specifies the requirements naphthol AS, sampling, test methods, inspection rules and signs, labels, packaging, transport and storage. This standard applies to quality control Naphthol AS products. Structure. Molecular formula. C17H13O2N Molecular weight. 263.29 (according to 2009 international relative atomic mass) CASRN. 92-77-3

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Preparation of

GB/T 601 chemical reagent standard titration solution

GB/T 603 chemical reagent in test methods - Preparations with

GB/T 2384 Determination of the melting point range of dye intermediates - General method

GB/T 6678-2003 General Principles for Sampling Chemical Products Laboratory use specifications and test methods GB/T 6682-2008 Analysis

GB/T 8170-2008 revised value represents about rules and limit values \u200b\u200band judgment

3 Requirements

Naphthol AS quality requirements shall be in accordance with Table 1. Table

1 Quality requirements of naphthol AS project index Excellence Qualified experiment method Appearance white to beige or red uniform powder