GB/T 4840-2016 in English
VALIDNitroanilines
- Issued on:2016-10-13
- Implemented on:2017-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
《GB/T 4840-2016硝基苯胺类》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
1. Background of Standard Revision and Technological Evolution
GB/T 4840-2016 is the latest standard for Nitroanilines, replacing the previous GB/T 4840-2007. The new version has made many improvements in technical requirements and safety specifications. The main changes include:
- Added CA SRN number (see Chapter 1);
- Modified the purity index of p-nitroaniline dry product and the purity index of o-nitroaniline superior product, and added the purity index of m-nitroaniline (see Chapter 3);
- Added safety information and clarified the labeling, packaging and storage requirements of hazardous chemicals (see Chapter 4, Sections 8.2, 8.3, and 8.5).
2. Analysis of core quality indicators
| Items | p-Nitroaniline (dry product) | o-Nitroaniline (superior product) | m-Nitroaniline (first-class product) |
|---|---|---|---|
| Purity/% | ≥99.50 | ≥99.50 | ≥99.50 |
| Total amino value/% | - | ≥98.00 | ≥90.00 |
| Water mass fraction/% | - | ≤0.30 | ≤0.50 |
3. Safety regulations and protection suggestions
Nitroaniline compounds belong to Class 6.1 toxic substances, and the United Nations number is UN 1661. The permissible concentration in the air is 5 mg/m³.
- Operators need to wear protective equipment, including gloves, masks and goggles;
- Store in a cool and ventilated place, away from fire and oxidants;
- Ensure that the packaging is intact during transportation and avoid exposure to sunlight and rain.
4. Implementation suggestions and precautions
In order to ensure compliance with the GB/T 4840-2016 standard, it is recommended that:
- Sampling and testing:Sampling should be carried out in accordance with the provisions of GB/T 6678-2003 to ensure sample representativeness.
- Test method:Use gas chromatography (see Section 6.5) and Karl Fischer method (see Section 6.6) to determine purity and moisture.
- Packaging and labeling:Strictly follow the requirements of GB 190 and GB/T 191 on the marking of dangerous goods.
- Safety Data Sheet: Provide detailed safety information according to GB/T 16483, including emergency response measures.
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