GB/T 37557-2019 in English
VALIDDiethylenetriamine
- Issued on:2019-06-04
- Implemented on:2020-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
《GB/T 37557-2019二乙烯三胺》由TC63（全国化学标准化技术委员会）归口，TC63SC2（全国化学标准化技术委员会有机化工分会）执行，主管部门为中国石油和化学工业联合会。
Introduction
GB/T 37557—2019 Standard Overview
National Standard of the People's Republic of China GB/T 37557—2019 is the quality standard for diethylenetriamine, which is managed by the National Technical Committee for Chemical Standardization and officially released in 2019. The standard mainly stipulates the requirements, test methods, inspection rules, and technical requirements for marking, packaging, transportation and storage of diethylenetriamine.
Molecular Structure and Characteristics of Diethylenetriamine
Diethylenetriamine (C₄H₁₃N₃) is a colorless to light yellow liquid with unique chemical properties and a wide range of applications. Its molecular formula is and its relative molecular mass is 103.17. As an important organic compound, diethylenetriamine has significant applications in many industries, including petrochemicals, textile printing and dyeing, water treatment and other fields.
Standard formulation background and technology evolution analysis
The formulation of GB/T 37557-2019 is based on the actual needs of the development of the chemical industry and aims to standardize the quality control system of diethylenetriamine. With the rapid development of the domestic chemical industry in recent years, the demand for diethylenetriamine has continued to rise, and the quality requirements have also increased.
Comparison of standard framework and analysis of technical indicators
| Project | Type I | Type II | |
|---|---|---|---|
| Diethylenetriamine (mass fraction)/% | Indicator requirements | ≥99.0 | ≥98.5 |
| Note: Type I products are used for high-end applications, and Type II products meet most applications. | |||
| Water (mass fraction)/% | ≤0.4 | ≤0.5 | |
| Chroma (platinum-cobalt color number)/Hazen unit | ≤20 | ≤30 | |
Interpretation of test methods and technical requirements
The test methods specified in the standard include:
- Area normalization method (arbitration method): Determine the content of diethylenetriamine by gas chromatography to ensure the accuracy and repeatability of the results.
- Microcoulometric method and Karl Fischer titration: Used to determine the water content to ensure detection accuracy and efficiency.
- Platinum-cobalt color number determination method: Evaluate product color by colorimetry to ensure compliance with quality standards.
Implementation recommendations and precautions
Actual application case analysis: When a chemical company adopted the GB/T 37557-2019 standard, it significantly improved the consistency and stability of product quality by establishing a complete quality control system and optimizing the testing process. It is recommended that manufacturers:
- Strictly follow the test methods and inspection rules in the standard.
- Regularly calibrate equipment and conduct internal quality audits.
- Strengthen employee training to ensure operational standardization and data accuracy.
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