7. Chemical Info
Ethyl Methacrylate
• Molecular Formula
C6H10O2
• Molecular Weight
114.14
• Boiling Point
117 C
• Melting Point
-75 C
• Density
0.9135
Methyl Methacrylate
• Molecular Formula
C5H8O2
CH2:C(CH3)COOCH3
• Molecular Weight
100.12
• Boiling Point
100C (212F)
• Melting Point
-48C (-54F)
• Density
0.944
8. Paraloid B-72
• Weight Average Molecular Weight
65,128 Mw
the most relevant average molecular weight is the total weight of
polymer divided by the number of polymer molecules
• Number Average Molecular Weight
11,397 Mn
replace the appearance of the number of polymers of molecular
weight i or Ni in the number average molecular weight formula with
the weight of polymer having molecular weight i or NiMi
MN is the average Mi weighted according to number
fractions and that MW is the average Mi weighted according to
weight fractions
• Glass Transition Temperature (Tg)
40°C (104°F)
• Density
.66g/cm^3
• Ignition Temperature
393C
• Not Really Applicable
Boiling Point
Melting Point
9. Industrial Uses
• Medium for flexible ink and
aerosol sprays
• General purpose clear and
pigmented coatings for masonry
and cloth
• Finishing metal furniture and
cabinets
• Phosphorescent and luminescent
pigments.
10. Conservational Uses
• Consolidant for paint both locally
and for overall impregnation of oil
paintings and wall paintings
• Inpainting medium
• Consolidant for wood, plaster,
stone, and ethnographic objects
• Adhesive for ceramics and glass
• Fixative for pencil, charcoal, and
chalk drawings and pastels
13. References
• Davidson, Amy; Alderson, Samantha; An Introduction to
Solution and Reaction Adhesives for Fossil Preparation;
Methods In Fossil Preparation: Proceedings of the First
Annual Fossil Preparation and Collections Symposium; pp 53-
62; United States; 2009.
• Davidson, Amy; Alderson, Samantha; Assembling an Archival
Marketing Kit for Paleontological Specimens; Journal of
Vertebrate Paleontology; September 2006, 54A.
• Davidson, Amy; Removing Fossil Ribs: The Thread Technique;
Journal of Vertebrate Paleontology; September 2008; 69A.
• Edenbaum, Jesse; Plastics Additives and Modifiers
Handbook; Van Nostrand Reinhold: New York; 1992.
• Horie, Velson; Adhesives for Natural Science Specimens;
Natural Science Collections Association News; 2009; issue
16.
• Koob, Stephen P.; The Use of Paraloid B-72 as an Adhesive:
Its Application for Archaeological Ceramics and Other
Materials; Studies in Conservation, Vol. 31, No. 1. (Feb.,
1986), pp. 7-14.