Surveys suggest that most Americans consume less than the RDA for copper each day. Up to 10,000 micrograms daily appears to be safe for consumption in adults. Vegan diets appear to provide adequate amounts of copper. In a number of clinical trials copper doses of 2-10 milligrams by mouth were safely used in patients. For plaque inhibition, a 1.1mM copper rinse has been used for four days.
Best Answer: Petroleum jelly or petrolatum is made by refining a byproduct of oil drilling. Petrolatum is a semi-solid mixture of hydrocarbons, having a melting-point usually ranging from a little below to a few degrees above 100Â° F (37Â° C).etroleum jelly is made by touching-up a byproduct of oil drilling, or some left over products of oil drilling. Vaseline is a well-known brand of petroleum jelly. Source(s): http://en.wikipedia.org/wiki/Petroleum_j... Cap'n Eridani Â· 9 years ago. Thumbs up. 1. Thumbs down. 1. 1 comment. Loading ...
Perhaps the most common lubricant is motor oil, which is used to protect internal combustion engines. Other common lubricants include grease and paraffin wax, the latter of which is found in candles. Since some lubricants can contain as much as 90% oil, they are almost a pure petroleum byproduct.n 2011, global production of crude oil and natural gas reached a whopping 83.6 million barrels per day. As the worldâs population increases, the need for such a commodity will increase along with it. Since petroleum is such a widely used substance, its unstable price affects us more than we can imagine.