NC State Chem Dept Safety Moment Peroxide Formers Fall 2014

Peroxide Formers

Safe Handling and Storage

Minimize Peroxide Formation

• Keep away from light

• Test for peroxides prior to distillation for Class B

• Purchase with inhibitor for Class C compounds

• Minimize exposure to O2, except in presence of inhibitor

• Keep diethyl ether in steel cans b/c iron is peroxide inhibitor

• Record Date of Receipt• Record Date of Opening

Dispose of Peroxidesin a Timely Fashion

Class A – High Hazard

Class B – Concentration

Peroxides

Class C – Autopolymerizers

3 months 3 months

12 months

12 months

or 24 hours without inhibitor

6 months

AFTER OPENING

AFTER RECEIVING

Common Peroxide Formers

Class A – High Hazard

Class B – Concentration

Peroxides

Class C – Autopolymerizers

Isopropyl Ether

Diethyl EtherTHFIsopropanol

ButadieneStyreneVinyl Chloride

Complete list and more informationcan be found at :

Information on Peroxide-Forming Compounds from Stanford University

submit forIMMEDIATE DISPOSAL

If CRYSTALSare present

in or around container,

For AllPeroxideFormers