Material Safety Data Sheet
Prod. No. 18183 LR Gold
Issue Date (11-14-91)
Section 1: Product and Company Identification
Product Name: LR Gold
Chemical Composition:
80% Polyhydroxy substituted bisphenol A dimethacrylate resin
19.6% C12 methacrylate ester
0.4% dimethyl para toluidine
Company Name
Ted Pella, Inc. and PELCO International, P.O. Box 492477, Redding, CA 96049-2477
Domestic Phone (800) 237-3526 (Mon-Thu. 6:00AM to 4:30PM PST; Fri 6:00AM to 4:00PM PST)
International Phone (01) (530) 243-2200 (Mon-Thu. 6:00AM to 4:30PM PST; Fri 6:00AM to 4:00PM PST)
Chemtrec Emergency Number 1-800-424-9300 24 hrs a day.
Section 2 Toxic Data:
Resin based on resins used in dental fillings.
The dimethyl para toluidine is referred to in NIOSH toxic substances
directory. However, in the concentraion used in the final resin
mix little toxic hazard exists, especially since the concentrations
are of the same order as those used in dental resins cured in
the mouth.
The resin is of very low viscosity and designed to penetrate biological
tissue being an embedding resin. Hence care should be taken to
minimize skin contact. This is especially true if there is a previous
history of allergy to methacrylates.
Section 3 Hazards:
The resin is combustible. The flash point of the resin exceeds
120°C.
If excess catalyst is added a high exotherm may result; this is
only a risk if the container holding the mixture is not vented.
Section 4 Recommendations for Safe Handling:
Avoid unnecessary contact with skin; wash hands after use with
soap and warm water. Apply a moisturizing cream after use if large
amounts have been spilled on the skin.
Avoid all contact with eyes.
Section 5 Disposal:
Dispose of resin and catalyst by combining the two in a well vented
container, i.e. a bucket. To polymerize the resin safely add 0.9%
of benzoyl peroxide. The resin will then cure with a little fuming
as it exotherms and should be placed in a fume cupboard or outside
while this occurs. The cool resin is harmless and may be disposed
of with other non toxic waste.
Ted Pella, Inc. makes no warranty of any kind regarding the information
furnished herein. Users should independently determine the suitability
and completeness of information from all sources. While this data
is presented in good faith and believed to be accurate, it should
be considered only as a supplement to other information gathered
by the user. It is the User's responsibility to assure the proper
use and disposal of these materials as well as the safety and
health of all personnel who may work with or otherwise come in
contact with these materials.
