Certification of bio-based shares
A further feature for characterizing the environmental impact of GOLDEN COMPOUND products is the indication of their bio-based components. These are listed differently and may sometimes require explanation because the reference value is not always recognized immediately.
Renewable shares refer to the percentage by weight of the renewable part of the total formulation. This is 35% for our 35% by weight containing formulation – GOLDEN COMPOUND pro 3545 BO.
The total carbon content refers to the classification of chemical molecular structure used in the scientific context. Naturally grown materials as well as mineral oil-based polymers have organic carbon content. Our formulations with 35% by weight sunflower fibers have 74% organic carbon content. The remaining atoms are oxygen, nitrogen, hydrogen and other elements in small quantities.
The renewable carbon content or biogenic carbon content is based on the C14/C12 analysis and measures effectively which part of the carbon is renewable and which is based on mineral oil. The tests are carried out according to the standard test methods D6488 of the ASTM for the determination of the bio-based content in solid, liquid and gaseous samples by means of radiocarbon analysis. The total carbon content of the fibers of our sunflower seed hulls is about 65%, with the remainder being oxygen, hydrogen and nitrogen.
Thus, GOLDEN COMPOUND pro 3545 BO consists of 35% by weight of natural raw materials.
However, the biogenic carbon content of the Compound is less than 35%, as the sunflower seed hulls has a smaller ratio of carbon to other elements than polypropylene.
GOLDEN COMPOUND pro 3545 BO received the quality seal “OK Biobased” from Vinçotte under the number B15-306-A. This represents a bio-based carbon content of 20-40%.