Difference between revisions of "Borax casein"
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== Description == | == Description == | ||
| − | A type of [http://cameo.mfa.org/materials/fullrecord.asp?name=casein | + | A type of [http://cameo.mfa.org/materials/fullrecord.asp?name=casein%20paint casein paint] that is hydrolyzed using [http://cameo.mfa.org/materials/fullrecord.asp?name=borax borax]. Borax-casein is prepared by soaking [http://cameo.mfa.org/materials/fullrecord.asp?name=casein casein] powder in water with commercial borax. Borax produces a stable emulsion that is slightly alkaline. Borax casein has a lower pH (7.0-7.8) than [http://cameo.mfa.org/materials/fullrecord.asp?name=lime%20casein lime casein] (9.0-9.9), and [http://cameo.mfa.org/materials/fullrecord.asp?name=ammonium%20casein ammonium casein] (8.0-9.0). A preservative, such as [http://cameo.mfa.org/materials/fullrecord.asp?name=phenol phenol] or [http://cameo.mfa.org/materials/fullrecord.asp?name=4-chloro-3-methylphenol p-chloro metacresol], is often used to eliminate biological growth in the solution. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
Revision as of 12:02, 13 June 2013
Description
A type of casein paint that is hydrolyzed using borax. Borax-casein is prepared by soaking casein powder in water with commercial borax. Borax produces a stable emulsion that is slightly alkaline. Borax casein has a lower pH (7.0-7.8) than lime casein (9.0-9.9), and ammonium casein (8.0-9.0). A preservative, such as phenol or p-chloro metacresol, is often used to eliminate biological growth in the solution.
Synonyms and Related Terms
borax-casein; borace caseina (It.)
Additional Information
K.Wehlte, The Materials and Techniques of Painting, Van Nostrand Reinhold Co., New York, 1975.
Authority
- Kurt Wehlte, Kurt Wehlte, The Materials and Techniques of Painting, Van Nostrand Reinhold Co., New York, 1975