|
Item |
Specification |
Test result |
Test Method |
|
Appearance |
White or yellowish-white crystalline powder |
Complies |
Visual |
|
Odor and Taste |
Characteristic |
Complies |
Sensory |
|
Assay |
TBHQ ≥99% |
99.84% |
GC |
|
Tert-Butyl-p-Benzoquinone (%) |
≤0.2 |
0.07 |
GC |
|
2,5-Di-Tert-Butylhydroquinone (%) |
≤0.2 |
0.05 |
GC |
|
Hydroquinone (%) |
≤0.1 |
0.04 |
GC |
|
Toluene (%) |
≤0.0025 |
<0.0025 |
GC |
|
Melting Range (°) |
126.5~128.5 |
127.1~128.2 |
GC |
|
UV-Absorbance (Polynuclear Hydrocarbons) |
Complies with FCC |
Complies |
- |
|
Heavy metal |
Lead (Pb) ≤2ppm |
Complies |
GB 5009.12-2017(I) |
|
Storage |
Preserve in well-closed, light-resistant, and protect from moisture. |
||
|
Packing |
25kg/drum. |
||
|
Shelf life |
3 years. |
||
