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| Item | Specification |
|---|---|
| Appearance | Colorless clear liquid |
| Odor | Has a strong buttery aroma with a rancid smell |
| Purity | ≥99% |
| Relative indensity | 0.952-0.960 |
| Refractive index | 1.397-1.399 |
| Heavy mental (by Pb, mg/kg) | ≤0.001% |