Explosive Chemical Removed From Lab At UCO - News9.com - Oklahoma City, OK - News, Weather, Video and Sports |

Explosive Chemical Removed From Lab At UCO

Posted: Updated:
Firefighters respond to a chemical situation on the campus of UCO in Edmond. Firefighters respond to a chemical situation on the campus of UCO in Edmond.
EDMOND, Oklahoma -

Classes are back in session at the University of Central Oklahoma after a highly explosive chemical forced the evacuation of two buildings.

According to university officials, a visiting scholar discovered a crystallized form of picric acid just before 2:00 p.m. Wednesday. It was discovered while the staff was taking inventory of the lab to prepare for an upcoming remodeling job.

Picric acid in its liquid form is flammable, but when it becomes solid and crystallized, it's highly explosive. Howell Hall and an adjacent building were evacuated.

1/11/12 Related Story: UCO Returns To Normal After Chemical Scare

A bomb squad was called in to diffuse the situation. Around 2:40 p.m., university officials told News 9 that the chemical was removed in a jar, put into a containment vehicle and removed from campus.

No one was injured in the incident.

Picric Acid:

Picric acid is the chemical compound formally called 2,4,6-trinitrophenol (TNP). This yellow crystalline solid is one of the most acidic phenols. Like other highly nitrated compounds such as TNT, picric acid is an explosive.

The chemical is commonly present in many laboratories, for use as a chemical reagent. Water is added to picric acid to act as a desensitizer. The wetted product is significantly less shock sensitive than the dry acid. One of the largest use of picric acid has been in munitions and explosives.

It is recommend that picric acid be stored wet. Glass bottles are required, as picric acid can form metal pi crate salts that are even more sensitive and hazardous than the acid. However, it is not acidic enough to cause chemical burns. If physical contact is made, the acid can react with proteins in the skin to give a dark brown color that may last as long as a month.

Special Features

iPhone App

Get breaking news, weather, sports & video directly on your iPhone.


Breaking political news & the latest headlines from the state capitol & D.C.


See where weather is happening using our live interactive radars.


Spend your money wisely with reviews of new tech gadgets & the latest news in technology.

TV Schedule

Need to know what's on TV? Check out our television schedule.

Special Coverage

  • Bridge Tracker

    How safe are Oklahoma's bridges? Use Bridge Tracker to find out now.

  • Fallen Heroes

    News 9 honors our fallen Oklahoma heroes. View our interactive timeline.

  • Murrah Bombing Timeline

    Learn more about the events leading up to and following the bombing.

  • Storm Zone

    Watch tornadoes tear across Oklahoma and learn how to stay safe!

  • Traffic

    Tired of waiting for a traffic report? Get it now with our Live traffic map!

Powered by Frankly
News 9
7401 N. Kelley Ave.
Oklahoma City, OK 73111
News9.com is proud to provide Oklahomans with timely and relevant news and information, sharing the stories, pictures and loves of Oklahomans across our great state.
All content © Copyright 2000 - 2018 KWTV. All Rights Reserved. For more information on this site, please read our Privacy Policy, and Terms of Service, and Ad Choices.