Appearance（25℃） Colorless viscous transparent liquid Purity ≥99.0% Phenol content ≤0.1% Color(APHA) ≤50 Specific gravity（20℃） 1.10~1.12 Refractive index（20℃） 1.536~1.540 As ≤0.0003% Pb ≤0.001% Solubility Mixed soluble in ethanol, acetone and glycerin; Slightly soluble in water, olive oil