1. The Chemistry of Liquid Nitrogen
By: Tyler
10/28/12

2. Guiding Questions
 What is Liquid Nitrogen?
 What are the properties?
 How is it made?
 Where is it Manufactured?
 What is it used for?

3. Liquid Nitrogen
 Liquid nitrogen is nitrogen in a liquid form
 Atomic symbol is LN2.
 Atomic number is 7.
 Nitrogen was first liquefied at the Jagiellonian
University on April 15 ,1883 by Polish
physicists, Zygmunt Wroblewski and Karol
Olszewski.
Liquid Nitrogen freezes at 63 K {210`C;-346`F.}

4. Liquid Nitrogen Properties
 Is an odorless, tasteless,
colorless liquid
 Has no oxygen
 Is a cryogenic fluid
 Is a cold boiling liquid

5. Uses of Liquid Nitrogen and
Interesting Facts
 It is used in making frozen desserts.
 Preserving medical specimens.
 Used to remove skin cancer and warts.
 Recycling of tires
Locally – It is used in Agriculture and Ranches
 Cooling of produce from the fields
 Freezing and transportation of food products
 To preserve Bull Semen for reproduction

6. How is Liquid nitrogen made?
 Liquid Nitrogen is made by compressing the
air, which heats ups as it cools from the
pressure as air escapes
 The cycle repeats until it is cooled to a cold
boiling point.

7. Where is Liquid Nitrogen
Manufactured
Liquid Nitrogen is manufactured worldwide.
 In California it is manufacture in Northern Southern
California.
 For Airgas it is manufactured in Sacramento,
California
 For Praxair it is manufactured in Pittsburgh,
California
 In Southern California there is a facility called
Cosmodyne LLC , it is a cryogenic industries
company. They manufacture Liquid Nitrogen and Dry
Ice.

8. How to Handle Liquid Nitrogen
 Always wear safety eye protection and insulated
gloves when handling Liquid Nitrogen

9. Research and Tour of Airgas

10. Contacts, References and Resources
Schwertzer, Jeff. Associate and Gas Specialist, Airgas, Salinas CA.
10 September 2012 –-Telephone conversation and Tour of
facility and information on the properties, facts and local
uses of liquid nitrogen
Stevens, Kent. General Manager, Praxair, Salinas CA. 10
September , 11 September and 3 November 2012 –
Telephone conversation and information on where liquid
nitrogen is manufactured.
Potter, Jeff. “How to make 30 Second Ice Cream”. Cooking for
Geeks: Real Science, Great Hacks and Good Food. 3
November 2012. http://cookingforgeeks.com

11. Contacts, References and Resources
(Con’t)
Casey, Tina. “Great Moments in tire Recycle History…No Wait, Make that
Cool Moments”. Scientific American”. 3 November 2012.
<http://scientificamerican.com/article.cfm?id=great-moments-in-tire-
recycling-his-2010-04&print=true
LTLehigh Technologies. “What is Micronized Rubber Powder”. 3 November
2012.
<www.lehightechnologies.com/index.php/what_we_do/what_is_microniz
ed_rubber_powder
“Liquid nitrogen”. Wikipedia, the free Encyclopedia. 21 October 2012
<http://en.wikipedia.org/wiki/Liquid_nitrogen
Rieke IV, H. Henry. “Liquid Nitrogen Ice Cream.” Cooking with Chemistry. 17
October 2012 <http:www.polsci.wvu.edu/Henry/Icecream/Icecream.html

12. Contacts, References and Resources
(Con’t)
Grey, Theodore. The Elements. New York: Black Dog
and Leventhal Publishers, Inc., 2009.
Yorifuji, Bunpei. Wonderful Life with the Elements: The
Periodic Table Personified. Tokyo: Kagaku Dojin
Publishing Company, Inc., 2009

13. Conclusion –
Please join me outside for some
Crazy Chemistry