Saturday, December 28, 2019

PETROLEUM JELLY - Petroleum jelly is an ingredient in many cosmetics and lotions. Originally it was marketed as a burn ointment. While petroleum jelly does not cure burns or other wounds, it does seal a cleaned burn or injury off from contamination or further infection. Petroleum jelly also may be applied to dry or chapped skin to seal in moisture. A variation known as red veterinary petroleum confers some protection against UV (ultraviolet) exposure and has been used as a sunscreen. Petroleum jelly is made by the waxy petroleum material that formed on oil rigs and distilling it. The lighter and thinner oil-based products make up petroleum jelly, also known as white petrolatum or simply as petrolatum. At room temperature, petroleum jelly is an odorless semi-solid which consists of a mixture of hydrocarbons. While petroleum jelly is widely used, it often contains Mineral Oil Aromatic Hydrocarbons (MOHA) and polyaromatics, which may be carcinogenic.

Products with petroleum jelly
.................................................................................................................................................................
Petroleum Jelly
What Is Petroleum Jelly?
Chemical Composition
By Anne Marie Helmenstine, Ph.D.




What Is Petroleum Jelly?
Petroleum jelly or petrolatum was discovered as a paraffin-like material coating oil rigs.
Since then, it has been used in various ointments and as a lubricant. Here is a look at what petroleum jelly is and its chemical composition.
Petroleum jelly is made by the waxy petroleum material that formed on oil rigs and distilling it.
The lighter and thinner oil-based products make up petroleum jelly, also known as white petrolatum or simply as petrolatum.
Robert Chesebrough is the chemist who devised and patented this process (U.S. Patent 127,568) in 1872.
Basically, the crude material undergoes vacuum distillation. The still residue is then filtered through bone char to yield petroleum jelly.
At room temperature, petroleum jelly is an odorless semi-solid which consists of a mixture of hydrocarbons.
The primary hydrocarbon is 1,1,2-Trimethylbenzeindole (C15H15N), which has a CAS number 8009-03-8.
Petroleum Jelly Uses
Petroleum jelly is an ingredient in many cosmetics and lotions.
Originally it was marketed as a burn ointment.
While petroleum jelly does not cure burns or other wounds, it does seal a cleaned burn or injury off from contamination or further infection.
Petroleum jelly also may be applied to dry or chapped skin to seal in moisture.
A variation known as red veterinary petroleum confers some protection against UV (ultraviolet) exposure and has been used as a sunscreen.
Safety Concerns
While petroleum jelly is widely used, it often contains Mineral Oil Aromatic Hydrocarbons (MOHA) and polyaromatics, which may be carcinogenic.

Anne Marie Helmenstine, Ph.D.
Introduction
Ph.D. in biomedical sciences from the University of Tennessee at Knoxville - Oak Ridge National Laboratory.
Science educator with experience teaching chemistry, biology, astronomy, and physics at the high school, college, and graduate levels.
ThoughtCo and About Education chemistry expert since 2001.
Widely-published graphic artist, responsible for printable periodic tables and other illustrations used in science.
Experience
Anne Helmenstine, Ph.D. has covered chemistry for ThoughtCo and About Education since 2001, and other sciences since 2013. She taught chemistry, biology, astronomy, and physics at the high school, college, and graduate levels. She has worked as a research scientist and also abstracting and indexing diverse scientific literature for the Department of Energy.
In addition to her work as a science writer, Dr. Helmenstine currently serves as a scientific consultant, specializing in problems requiring an interdisciplinary approach. Previously, she worked as a research scientist and college professor. 
Education
Dr. Helmenstine holds a Ph.D. in biomedical sciences from the University of Tennessee at Knoxville and a B.A. in physics and mathematics with a minor in chemistry from Hastings College. In her doctoral work, Dr. Helmenstine developed ultra-sensitive chemical detection and medical diagnostic tests.
ThoughtCo and Dotdash
ThoughtCo is a premier reference site focusing on expert-created education content. We are one of the top-10 information sites in the world as rated by comScore, a leading Internet measurement company. Every month, more than 13 million readers seek answers to their questions on ThoughtCo.
For more than 20 years, Dotdash brands have been helping people find answers, solve problems, and get inspired. We are one of the top-20 largest content publishers on the Internet according to comScore, and reach more than 30% of the U.S. population monthly. Our brands collectively have won more than 20 industry awards in the last year alone, and recently Dotdash was named Publisher of the Year by Digiday, a leading industry publication.
Products with petroleum jelly

No comments:

Post a Comment