ITEM | SPECIFICATION |
Appearance | Clear,colourless to slightly yellow or greenish-yellow,viscous,oily liquid |
Solubility | Practically insoluble in water,freely soluble in acetone,in ethanol and vegetable oils |
Assay | ≥ 98% |
Identification A.B.C | Correspond |
Related substances(GC) | Impurity A:≤0.5% Impurity B:≤1.5% Impurity C(tocopherol):≤0.5% Sum of impurity D and E:≤1.0% Any other impurity ,for each impurity:≤0.25% Total:≤2.5% |
Optical rotation | -0.01° to +0.01° |
Acid Vaue | ≤2.0mg KOH/g |
Sulpated ash | ≤0.10% |
Heavy metals | ≤ 10mg/kg |
Lead | ≤ 2mg/kg |
Arsenic | ≤ 1mg/kg |
Refractive(20ºC) | 1.494~1.498 |
Absorption | 42.0~45.0 Max. at about 284nm 7.5~9.0 Min.at about 254nm |
Density(20ºC) | 0.952~0.966g/ml |
Residual solvents | Meets the requirement |