Safrole（Sassafras oil）

Empirical Formula： C10H10O2       Molecular Mass：162．18
Physical and Chemical Properties:
Appearance： Achromatous to Pale Yellow Oil-state Liquid
Melting Point：11℃
Boiling Point：223～236℃
Freezing Point：10．0～11．2℃
Flash Point：97℃
Relative Density（25/25℃）：1．092～1．101  
Refractive Index（20℃）：1．5360～1．5385
Optical Rotation：[α]D－1～－2°，－0．30～＋0．30°

Solubility：Not resolvable in Water. Resolvable in 90% Ethanol with proportion of 1∶3. Resolvable in Ethanol, Aether, Chloroform, and most of organic liquors.
Sensual Properties：Characteristic scent of Sassafras tree.
Method：

Distilled from essence oil richly containing Safrole.

There is also an uneconomical synthesizing method. With Catechins Methylcatechol as the raw material and through its chemical reaction with Allyl Chloride, the substance can be produced.  Or it can be achieved by chemical reaction between 4－ Allyl Catechins and Diiodomethane.

Natural existence：

The Safrole naturally exists in the root oil of Sassafras officinale tree.

It is also contained in the following essence oils: Safrole Oil, Nutmeg Oil, and Cinnamon leaf Oil (Latin Name: Cinnamomum zeylanicum), etc..

In the bark Oil of Nemuaron humboldtii tree, content of Safrole reaches as high as 99% and above. Content of Safrole is 93% and above in Brazil Safrole Oil, and  is 80% and above in the America Safrole Oil.

Supervision：Safrole is not allowed to be employed in foodstuff in the United States.