Physical Properties of 1,3-Butadiene

Molecular Weight:54.09

Boiling Point:-4.5 oC at 760 mm Hg

Melting Point:108.91 oC

Vapor Pressure:910 mm Hg at 20 oC

Vapor Density:1.87 (air = 1)

Density/Specific Gravity:0.6211 at 20/4 oC (water = 1)

Log Octanol/Water Partition Coefficient:1.99

Conversion Factor:1 ppm = 2.25 mg/m3

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1,3-Butadiene

Gum Arabic History

Gum Arabic is advised the oldest gum bread that dates aback to about 2,650 (BC). The Acacia Senegal timberline is the capital antecedent of bartering Gum Arabic and is aswell the best accepted gum in agreement of quality. Gum Talha, from the Acacia Seyal timberline is not accustomed in the United States and Europe for aliment use, but it can be acclimated for non-edible products. There are about added than 1000 breed of Acacia timberline that aftermath gum throughout the world, but a lot of of them are developed in the sub-Sahara area of Africa, which is accepted as the gum belt back the countries that are allotment of this area are the above ambassador and exporter of Gum Arabic.