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By certification 
2. Technical index
Appearance
Light yellow transparent oily liquid
Flash point(open) ℃
≥185
Ester content
≥99%
Density
g/cm3 (25℃)
1.02－1.07
Acidity (mgKOH/g)
≤0.1%
Freezing point℃
＜－10
Hot volatilize quantit(100℃,6h)
＜0.5%
Refractive index（20℃）
1.494－1.500
