Explanation of Hazardous Labels
02822-AB For use with GMA and other resin kits
C14H10O4
MW: 242
Appearance: Granular white paste-powder with faint to no odor.
NIOSH (RTECS) #: DM8575000
MP: 142° C / 287° F
CAS #: 94-36-0
UN #: 3104 Oxidizer

Benzoyl peroxide, when dry, can, under certain circumstances, be an explosive solid. That is why it is supplied "wet". If we describe it as a "paste", then customers who receive what looks more like a "powder" become concerned and worried. If we describe it as a powder, then we have other customers expressing various safety concerns about the material they have received. In the UK, they use the term "damped" to describe a material in this kind of state.

The product supplied by SPI Supplies contains 25% water but to the eyes of most, it really does appear to be more like a powder than a paste. When it really shakes like a dry powder, however, we add a little water so it is taken to the "damped" state.

Before the product is shipped from SPI Supplies, it is given a final inspection. Should it sit on your laboratory shelf for some time, and you have concerns, let us know and we will try our best to put your mind at ease.

MSDS

Benzoyl Peroxide

Size SPI #Each10+30+In Stock
division 5.2 10 gms02822-BA$8.74$7.87$7.43 Add to cartYes
division 5.2 25 gms02822-CA12.2411.0210.40 Add to cartYes
division 5.2 100 gms02822-AB29.1326.2224.76 Add to cartNo
Storage conditions: Room temperature
Hazardous from stand point of shipping