MAY 17, 2018 06:55 AM PDT

Old Cling Wrap Works Better, and It Is Toxic

2 7 1290

As people of the older generation would say the "old" cling wrap worked better, they are correct. The last version of the food-wrapping film contains a compound called polyvinylidene chloride, or PVDC.  

Since its accidental discovery in 1933, PVDC has been widely used household and industrial products. A thin PVDC plastic film permits a minimum amount of water vapor, flavor molecules, and oxygen to travel through. This feature effectively slows down food spoilage and helps food retain its flavor and aroma. 

As a lot of PVDC products started to accumulate in the waste pile and get incinerated, people began to realize the burning them would release vapors of sickening smell. In the fume, there is a toxic component known as HCl or hydrochloric acid. It can cause a headache if inhaled briefly, and possibly cancer if the exposure is long term. 

After some research, S.C. Johnson the owner of Cling Wrap trademark came up with a new formula that uses chlorine-free polyethylene. The new component makes the wrap more environmentally friendly, but its chemical structure allows more gaseous molecules to travel between inside and outside. The result? Your left-over food won't stay as fresh as they used to be.  

Source: SciShow via Youtube

About the Author
  • With years of experience in biomedical R & D, Daniel is also very into writing. He is constantly fascinated by what's happening in the world of science. He hopes to capture the public's interest and promote scientific literacy with his trending news articles.
You May Also Like
MAY 09, 2018
Chemistry & Physics
MAY 09, 2018
Precession: the gravity-defying effect
Toy gyroscopes can do all kinds of interesting tricks. The most mysterious one, precession, seems to defy gravity.  By definition, precession refers t
MAY 23, 2018
Chemistry & Physics
MAY 23, 2018
Battery-free Toys Powered by Nanogenerators
Often you can see or hear toy commercials finished with one peculiar tagline: batteries not included. However jokable this may sound, it exposes an inconve
MAY 24, 2018
Chemistry & Physics
MAY 24, 2018
The Rise of Molecular Machines
From the early theoretical framework laid down by famed physicist Richard Feynman, to the inaugural paper titled "Molecular Engineering: An Approach t
JUN 22, 2018
Cell & Molecular Biology
JUN 22, 2018
New Type of Photosynthesis is Discovered
This work will change textbooks, and may impact a variety of fields, including the search for extraterrestrial life.
JUL 13, 2018
Chemistry & Physics
JUL 13, 2018
Detection of a High-energy Neutrino Signal Marked a New Era in Space Observation
A high-energy neutrino signal has been traced back to its source for the first time in astronomical history, according to the latest announcement from the
AUG 15, 2018
Chemistry & Physics
AUG 15, 2018
What's So Special About Polarized Sunglasses?
Glare could cause discomfort in the eyes, even disability. To reduce the glare, one can try to reduce overall luminance, say by putting on a pair of generi
Loading Comments...