Difference between revisions of "Evasol"
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== Description == | == Description == | ||
| − | [Book Restorations] | + | [Book Restorations] A brand name for an aqueous adhesive [[emulsion]] containing an [[ethylene vinyl acetate]] copolymer. Evasol was manufactured for conservation use to release less [[acetic acid]] than similar adhesives by containing less [[polyvinyl acetate]] and more long-chain [[polyethylene]] in its copolymer formulation. The current formulation contains no [[plasticizer|plasticizers]]. Polyethylene is used to make the co-polymer more flexible |
== Personal Risks == | == Personal Risks == | ||
| − | The adhesive is not classified as hazardous | + | * The adhesive is not classified as hazardous, but the residual monomer is considered toxic. |
| + | * Use in a well-ventilated area. | ||
| + | * Repeated or prolonged contact with skin may result in irritation and dermatic effects. | ||
| + | * May be an eye irritant. | ||
| + | * Evasol: [http://www.bookrestorations.com.au/evasol-msds.pdf SDS] | ||
| − | + | == Collection Risks == | |
| − | + | Evasol has passed the [[Photographic Activity Test]]. The adhesive has an initial pH of 6.5 to 7, but will drop slightly over time. | |
| − | + | '''Links to Oddy Test results posted on AIC Wiki Materials Database Pages for individual materials below''' | |
| − | + | ° [http://www.conservation-wiki.com/wiki/Oddy_Test_Results:_Exhibition_Adhesives_and_Tapes#Evasol0001 Evasol adhesive, clear] tested in 2015 | |
| − | + | ° [http://www.conservation-wiki.com/wiki/Oddy_Test_Results:_Exhibition_Adhesives_and_Tapes#Evasol0002 Evasol] tested in 2003 | |
== Physical and Chemical Properties == | == Physical and Chemical Properties == | ||
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* Emulsion pH = 6.5 – 7 | * Emulsion pH = 6.5 – 7 | ||
* Dry film will reconstitute to an emulsion form in contact with water. | * Dry film will reconstitute to an emulsion form in contact with water. | ||
| + | |||
| + | == Working Properties == | ||
| + | |||
| + | Evasol may be applied with a brush or roller. It may be diluted with water or mixed with other adhesives such as [[starch]] or [[methyl cellulose]] by 10-15% before losing tack. The adhesive has a shelf life of up to 3 years, and requires occasional stirring. It should not be refrigerated, to avoid coagulation. | ||
== Forms and Sizes == | == Forms and Sizes == | ||
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500 mL, 1 liter, 5 liter, and 20 liter containers | 500 mL, 1 liter, 5 liter, and 20 liter containers | ||
| − | == | + | == Resources and Citations == |
| − | + | * The [http://www.bookrestorations.com.au/evasol.html Evasol] page on the Book Restorations website contains links to product information, instruction, and safety data sheets (accessed 6/2020). | |
| − | + | * Emma Guerard, contributed information, MWG group, 2020. | |
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| − | [[Category:MWG]] | + | [[Category:Materials database]] |
| + | [[Category:MWG]][[Category:Adhesives]] | ||
| + | [[Category: Adhesive: Water-based]] | ||
Latest revision as of 16:18, 5 August 2022
Description
[Book Restorations] A brand name for an aqueous adhesive Emulsion containing an Ethylene vinyl acetate copolymer. Evasol was manufactured for conservation use to release less Acetic acid than similar adhesives by containing less Polyvinyl acetate and more long-chain Polyethylene in its copolymer formulation. The current formulation contains no plasticizers. Polyethylene is used to make the co-polymer more flexible
Personal Risks
- The adhesive is not classified as hazardous, but the residual monomer is considered toxic.
- Use in a well-ventilated area.
- Repeated or prolonged contact with skin may result in irritation and dermatic effects.
- May be an eye irritant.
- Evasol: SDS
Collection Risks
Evasol has passed the Photographic Activity Test. The adhesive has an initial pH of 6.5 to 7, but will drop slightly over time.
Links to Oddy Test results posted on AIC Wiki Materials Database Pages for individual materials below
° Evasol adhesive, clear tested in 2015
° Evasol tested in 2003
Physical and Chemical Properties
- Emulsion has 58 – 60% solids
- Viscosity = 2000 – 3000 cps
- Emulsion pH = 6.5 – 7
- Dry film will reconstitute to an emulsion form in contact with water.
Working Properties
Evasol may be applied with a brush or roller. It may be diluted with water or mixed with other adhesives such as Starch or Methyl cellulose by 10-15% before losing tack. The adhesive has a shelf life of up to 3 years, and requires occasional stirring. It should not be refrigerated, to avoid coagulation.
Forms and Sizes
500 mL, 1 liter, 5 liter, and 20 liter containers
Resources and Citations
- The Evasol page on the Book Restorations website contains links to product information, instruction, and safety data sheets (accessed 6/2020).
- Emma Guerard, contributed information, MWG group, 2020.