GJB 10059-2021
Specification for bis(2,2-dinitropropanol)formal/bis(2,2-dinitropropanol)acetal (English Version)
- Standard No.
- GJB 10059-2021
- Language
- Chinese, Available in English version
- Release Date
- 2021
- Published By
- Military Standard of the People's Republic of China-General Armament Department
- Latest
- GJB 10059-2021
- Introduction
Analysis of Standard Technical Framework
Technical Dimensions Type C Products Type D Products Appearance Characteristics Light yellow transparent liquid Orange-red to brown-red transparent liquid DPA content (%) 0 0.10-0.22 Aging acid value (mg/g) Not tested ≤0.50 Shelf life (years) 1 2
Core detection method
1. Component analysis technology
The A1/A2 mass fraction was determined by reverse-phase high performance liquid chromatography, and the internal standard method (2,4-dinitroaniline) and area normalization method were used in parallel to ensure that the component ratio was controlled in the range of 45-55%. Chromatographic conditions:
- Mobile phase: acetonitrile: water = 60:40 (V/V)
- Detection wavelength: 214nm
- Column temperature: 35±0.1℃
2. Key points for DPA determination
For the diphenylamine (DPA) additive of type D products, the standard requires that the detection wavelength be adjusted to 283nm, and a C18 chromatographic column be used for separation. The relative correction factor calculation ensures accurate control of 0.10-0.22%.
Implementation and application suggestions
1. Storage management specifications
The product must be stored in a single layer above 0℃ to avoid stacking. It must be sealed immediately after opening. Type D products have a longer shelf life of 2 years than type C.
2. Transport risk control
The packaging must be marked with the "flammable liquid" sign specified in GB190. Mixing with oxidizers is strictly prohibited during transportation. It is recommended to use shock-proof stainless steel containers.
3. Process change management
When there is a major change in raw materials or processes, full-item identification and inspection must be carried out in accordance with Clause 4.2 of the standard, including 105℃/168h accelerated aging test.
Technology evolution analysis
Compared with the previous version, this standard strengthens the quantitative control of DPA stabilizers and effectively improves the storage stability of propellants by introducing the aging acid value indicator (≤0.50mg/g). The 168-hour accelerated aging test method specified in Appendix E provides data support for the long-term storage of ammunition.
GJB 10059-2021 history
- 2021 GJB 10059-2021 Specification for bis(2,2-dinitropropanol)formal/bis(2,2-dinitropropanol)acetal