NC State Chemistry Department Safety Moment about Peroxide Formers

1. Peroxide Formers

2. • 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

3. 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

4. Class A – High Hazard
Class B – Concentration
Peroxides
Class C – Autopolymerizers
Isopropyl Ether
Diethyl Ether
THF
Isopropanol
Butadiene
Styrene
Vinyl Chloride
Complete list and
more information
can be found at :
Information on Peroxide-Forming
Compounds from
Vanderbilt University Medical Center