GB/T 23673-2019 in English

VALID

3，4-Dichloroaniline

Issued on:2019-12-31
Implemented on:2020-11-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 23673-2019
Document status:	VALID
Title in English:	3，4-Dichloroaniline
Title in Chinese:	3,4-二氯苯胺
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2019-12-31
Implemented on:	2020-11-01
Superseding:	GB/T 23673-2009 3，4-Dichloroaniline
ICS Classification:	71.100.01-Products of the chemical industry in general
Chinese Classification:	G56-Dye intermediate
Professional Classification:	GB-National Standard
Related Keywords:	3，4-dichloroaniline introduction gb/t 23673-2019 standard overview gb/t standard frameworks project dimensions gb/t water content determination key technology interpretation application organic impurity content determination
Related Topics:	pyrene aniline Dichlorobenzene Chloraniline colorimetric method m-phenylenediamine production diphenylamine gb Aniline plastic Aniline plastic Chlorophenylenediamine polychlorodibenzo naphthalenediline Diphenylamine Diamine Dichlorobenzene detection method m-diphenylamine protection Diphenylamine detection in water Aniline standard Chloroaniline Aniline environment amine Dichlorobenzene detection method pyrene aniline Diphenhydramine Diphenylamine pyrene derivatives Aniline UV Diphenylamine detection method Dichlorobenzene products Dichlorobenzene test method Dichlorobenzene detection method Dichlorobenzene Detection of dichlorobenzene Determination of aniline gb Water quality 1,2-dichlorobenzene, 1,4-dichlorobenzene, 1,2,4-trichlorobenzene pex chloramine Dicyandiamide p-Phenylenediamine dichloramine Detection of aniline Amine version monochloramine total chlorine diphenylamine use Chlorobenzene 1 2 dichlorobenzene water quality Chlorobenzene + dichlorobenzene water quality Chlorobenzenes Chlorobenzene, o-dichlorobenzene, p-dichlorobenzene p-Phenylenediethylamine Aniline UV Analysis of diamines Water quality 1,2-dichlorobenzene, 1,4-dichlorobenzene, 1,2,4-trichlorobenzene Diphenylamine products dichloro peak Benzoxaline p-phenylenediamine Aniline standard water Analysis of diphenylamine Fluorochloroaniline Chlorodiphenylamine Tetrachloroaniline Chloroaniline Analysis of diphenylamine Dichlorobenzene pollution source Anilinium chloride Diphenylamine detection Aniline Total Nitrogen Parachlorobiphenyl aniline Chloroaniline in the air dichlorobenzene alcohol Diphenylamine treatment Anilinium chloride Diphenylamine Properties Diphenylamine content detection Hydroxylaminochlorobenzene GBT23673 GB/T 23673-2009 GB/T 23673-2019 Ammonium perchlorate Measuring aniline and storing it Diphenylamine Air Quality p-phenylenediamine liquid phase Chloramine industry Chloramine enterprise

《GB/T 23673-20193,4-二氯苯胺》由TC134（全国染料标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。

Introduction

GB/T 23673-2019 Standard Overview

GB/T 23673-2019 "3,4-Dichloroaniline" is the latest national standard formulated by China for this chemical, replacing the original GB/T 23673-2009 version. This standard mainly specifies the quality requirements, test methods and safety information of 3,4-dichloroaniline.

Comparison of standard frameworks

Project dimensions	GB/T 23673—2019	Main changes compared with GB/T 23673—2009
Scope of application of the standard	Applicable to quality control of 3,4-dichloroaniline products	Added provisions on the allowable difference in net content of packaging
Quality requirements	Table 1 specifies the requirements for appearance, initial melting point, purity and other indicators	The p-chloroaniline content indicator of superior products has been modified, and the allowable difference requirement for moisture determination has been added
Test methods	Purity and organic impurity content determination by gas chromatography	Added the accuracy requirement of analytical balance (0.1mg) and specific specifications for water content determination

Key technology interpretation

Application of gas chromatography:In Section 6.4, the standard specifies the use of capillary column and hydrogen flame ionization detector (FID) to determine the purity and organic impurities of 3,4-dichloroaniline. This method uses the peak area normalization method for quantification, ensuring the accuracy of the analysis results.

Importance of water content determination:The standard adds specific requirements and determination methods for water content (Section 6.5). Weigh about 2.0g of the sample and dissolve it in a mixed solvent of chloroform and methanol for determination. The absolute value of the difference between the two parallel determination results should not exceed 0.05%.

Implementation Suggestions

1. In the actual production process, enterprises should strictly follow the standard requirements to conduct product quality inspection and packaging label management.

2. When using gas chromatograph, it is necessary to calibrate the equipment regularly and ensure that the purity of the reagents meets the requirements.

3. In terms of safety, it is recommended that enterprises strengthen employee protection training and strictly follow the regulations on the storage and transportation of hazardous chemicals.

More samples: DL/T 5154-2012 JC/T 2453-2018 NB/T 47013.2-2015

Sample only — not a preview of GB/T 23673-2019