GB/T 3407-2019 in English
VALIDPetroleum xylene
- Issued on:2019-10-18
- Implemented on:2020-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$68.00
《GB/T 3407-2019石油混合二甲苯》由TC280（全国石油产品和润滑剂标准化技术委员会）归口，TC280SC1（全国石油产品和润滑剂标准化技术委员会石油燃料和润滑剂分会）执行，主管部门为国家标准化管理委员会。
Introduction
1. Background and significance of the standard
GB/T 3407-2019 Petroleum Mixed Xylenes is an important standard for the petroleum industry, which mainly stipulates the product classification, technical requirements, test methods and safety specifications of petroleum mixed xylenes. This standard replaces the old version GB/T 3407-2010 and has made a number of revisions in response to industry development and technological progress, aiming to improve product quality and safety.
2. Main updates of the standard
| Items | Requirements of the old version | Requirements of the new version | Remarks |
|---|---|---|---|
| End point of distillation range | - | Dry point (see Table 1) | New definition |
| Total sulfur content index | Not more than $2~\mathrm{mg/kg}$ | Not more than $1~\mathrm{mg/kg}$ | Strictly limited |
| $5^\circ C$ Mixed xylene evaporation residue content | No more than $3~\mathrm{mg/100~mL}$ | No more than $5~\mathrm{mg/100~mL}$ | Relax restrictions |
3. Interpretation of key technical requirements
The technical indicators of petroleum mixed xylene are the core of industry quality control. Table 1 lists the quality requirements and test methods at different temperatures in detail. The following is an explanation and application of key indicators:
Case analysis: total sulfur content determination
Total sulfur content is an important indicator for measuring the quality of petroleum mixed xylene. The new standard requires no more than $1~\mathrm{mg/kg}$. The determination method adopts the coulometric method (SH/T 0253) to ensure the accuracy and operability of the data. By strictly controlling the sulfur content, the risk of corrosion to equipment and the environment can be effectively reduced.
4. Safety and protection recommendations
Petroleum mixed xylene is a flammable liquid and toxic substance (GB13690). Safety regulations must be strictly observed during storage, transportation and use:
- Storage areas should be well ventilated and away from sources of fire.
- Operators should wear protective equipment such as gloves, masks and goggles.
- Leakage treatment: Evacuate personnel immediately, use activated carbon or sand for adsorption, and notify professional agencies for disposal.
5. Implementation recommendations
To ensure the effective implementation of the standard, it is recommended that manufacturers:
- Establish a sound quality management system to ensure that all indicators meet the requirements.
- Strengthen employee training to improve safety awareness and operating skills.
- Perform internal audits and external certifications regularly to ensure stable product quality.
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