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 ...
1865: invention of petroleum jelly. The raw material for petroleum jelly (also known as petrolatum or soft paraffin) was discovered in 1859 in Titusville, Pennsylvania where it was stuck to some of the first oil rigs in the US.y 1870, Chesebrough was marketing his petroleum jelly product as Vaseline (claimed to be from the German word for water (wasser -- pronounced vahser), and the Greek word for oil (elaion), but this is unconfirmed). He patented the process in 1872.