GB25199-2017
B5 diesel fuels
B5柴油
GB 25199-2017 is a current mandatory Chinese national standard for B5 diesel fuels. It appears in the Auto compliance cluster with a energy efficiency focus and has an implementation date of Sep 7, 2017.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to B5 diesel fuels used in compression-ignition engines, which are blended from BD100 biodiesel and petroleum diesel. It covers two main categories: B5 ordinary diesel (for tractors, engineering machinery, etc.) and B5 automotive diesel (for vehicles, including Stage V and Stage VI variants). It is mandatory for all manufacturers and suppliers of B5 blended diesel in China. The standard does not apply to pure petroleum diesel or biodiesel blends exceeding 5% volume fraction.
Technical requirements
The standard specifies comprehensive physical and chemical requirements for B5 diesel, categorized by cold flow properties (pour point and cold filter plugging point) into three grades: No. 5, No. 0, and No. -10. Key parameters include strict limits on sulfur content (max 10 mg/kg), oxidation stability, and fatty acid methyl ester (FAME) content (1.0% to 5.0%). For B5 automotive diesel, the standard enforces additional environmental controls, including limits on polycyclic aromatic hydrocarbons and total contaminant content. Stage VI requirements introduce stricter density ranges and lower polycyclic aromatic hydrocarbon limits compared to Stage V. The standard also incorporates Appendix C, which defines the technical specifications for BD100 biodiesel used as the blending component. BD100 must meet specific thresholds for flash point, glycerin content, and metal impurities to be approved for blending. Additives must not contain known harmful substances, and the intentional addition of methanol is strictly prohibited.
Testing methods
Compliance is verified through a series of standardized tests referencing both national (GB/T, SH/T) and international (ASTM, EN) methods. Key evaluations include sulfur content determination via ultraviolet fluorescence (SH/T 0689), oxidation stability testing (SH/T 0175), and FAME content measurement using infrared spectroscopy (GB/T 23801). Cold performance is assessed through cold filter plugging point (SH/T 0248) and pour point (GB/T 510) tests. Appendix B details a qualitative screening method using diphenylamine to detect nitrate-type cetane number improvers.
FAQs
What products are regulated under GB 25199-2017?
GB 25199-2017 regulates B5 diesel fuels, which are blends of 1% to 5% BD100 biodiesel with petroleum diesel. It covers both B5 ordinary diesel for non-road machinery and B5 automotive diesel for vehicles.
Are there any updates from the previous version of GB 25199-2017?
Yes, this version merges the previous GB 25199-2015 and GB/T 20828-2015 standards. It deletes Stage IV automotive diesel requirements, adds Stage VI requirements, and moves BD100 biodiesel specifications to Appendix C. The flash point requirement for BD100 was also increased from 101°C to 130°C.
How does GB 25199-2017 differ from international standards?
While GB 25199-2017 references several international methods like ASTM D7039 and EN 14107, it establishes China-specific environmental thresholds, such as a strict 10 mg/kg sulfur limit and specific polycyclic aromatic hydrocarbon limits for automotive diesel, aligning with China's Stage VI emission strategies.
The summary above provides a high-level overview of GB 25199-2017. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 25199-2017 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- E31
- ICS
- 75.160.20
- Competent department
- National Energy Administration
- Technical committee
- National Energy Administration
Relationships
Replaces:GB 25199-2015, GB/T 20828-2015