Cinnamon is obtained from the bark of trees such as Cinnamomum verum and Cinnamomum cassia and is used as spice in food and in essential oils. Cinnamon is known to be used in Egypt as early as 2000 BC. Bark of cinnamon is used as spice for flavoring food, chocolates and alcoholic beverages. Indonesia, China and Vietnam is the top three countries producing cinnamon.

Cinnamon can be used in variety of food, there are numerous websites listing out  recipes involving cinnamon but I find BBC Food the best,

click here to know more about cooking with cinnamon.

Below is the nutritional value of cinnamon as per United States Department of Agriculture Agricultural Research Service.

Coumarin, a component of cinnamon is known to cause damage to kidney and liver in higher concentration, recommended maximum tolerable daily intake of coumarin is limited to 0.1 mg of coumarin per kg of body weight.

Is Cinnamon Dangerous Goods?

In transport cinnamon is recommended to be shipped in ventilated containers as non-ventilated containers may result in higher relative humidity and damage to cargo. To know more about cargo care of cinnamon visit TIS page here

Cinnamon bark and cinnamon powder are not dangerous goods however, cinnamon oil is dangerous goods.
CAS Number 8007-80-5, Cinnamon oil, is classified as Class 6.1 UN Number 2810 TOXIC LIQUID, ORGANIC, N.O.S. Packing Group III.