China HG/T 5627-2019 MIBK Chromaticity Requirements

Introduction

Methyl isobutyl ketone (MIBK) is an important industrial solvent, which is widely used in coating, printing ink, electronic manufacturing and other fields. HG/T 5627-2019 "methyl isobutyl ketone" standard specifies the quality index and detection method of MIBK in detail, and the color requirement is one of the important indicators. This paper will discuss the relevant contents of the standard on MIBK color requirements in detail, and analyze its importance and influencing factors.

Chromaticity Importance

The color of MIBK is critical to its application in downstream products. Due to its function as a solvent, too deep color can affect the appearance and performance of the final product in applications, especially in color-sensitive fields such as cosmetics and food additive manufacturing. Therefore, the color index is the key factor to ensure the quality and performance of MIBK products.

Colorimetric standard of HG/T 5627-2019

According to HG/T 5627-2019, the colorimetric requirements of MIBK are usually determined by a specific spectrophotometric method or a standard colorimetric card. The standard specifies the chromaticity index in detail, usually using platinum-cobalt chromaticity units, such as platinum-cobalt chromaticity does not exceed a certain value. Specific values can refer to the standard documents to ensure that the supplier's products meet the requirements.

chromaticity detection method

Colorimetric testing is typically performed using a spectrophotometric method to compare MIBK samples to a standard color scale. Steps include sample preparation, measurement of absorbance using a spectrophotometer, and comparison to a standard curve. There is also a colorimetric method, using a standard colorimetric tube for visual comparison, the results need to be consistent with the spectrophotometric method. These methods ensure the accuracy and reliability of the test results.

Factors Affecting MIBK Chromaticity

1. Raw material quality: methyl isobutyl raw material purity directly affects MIBK color.
2. Production process: catalyst selection, reaction conditions and refining process in the oxidation reaction will affect the color.
3. Storage conditions: light, temperature and storage time may cause color changes, to be protected from light.
4. Pollution: the environment of iron ions and other impurities will increase the color, need to strictly control the storage and transportation conditions.

Compliance Meaning

It is of great significance to ensure that the chromaticity of MIBK meets the HG/T 5627-2019 standard. Products that meet the requirements are more likely to pass international certification, expand market access, meet the needs of high-end customers, and enhance the competitiveness of enterprises. Products that meet the standards can avoid quality disputes and reduce the risk of returns and claims.

Conclusion

MIBK's color requirements are an important indicator of its quality, and compliance with HG/T 5627-2019 ensures product conformity and reliability. Production enterprises should strictly control the production, storage and testing links to maximize market demand.