nyuuzyou/wikis huggingface dataset:
Potassium permanganate

== Description ==
Dark purple, odorless crystals with a blue metallic sheen in reflected light. Potassium permanganate is a strong oxidizing agent that has been, in the past, used to bleach resins, waxes, fats, oils, straw, cotton, silk, and other fibers. Excess bleaching of wood and paper results in dark brown stains caused by the precipitation of manganese dioxide. It is now rarely used, if at all, as a bleach. Potassium permanganate is used to tan leathers and as a hypo eliminator in photographic processing solutions.
== Synonyms and Related Terms ==
permanganic acid potassium salt; chameleon mineral; Condy's crystals
== Risks ==
* Strong oxidizing agent. 
* Reacts violently with organics and reducing salts. 
* Ingestion is toxic. 
* Contact and inhalation cause severe irritation. 
* ThermoFisher: SDS
==Physical and Chemical Properties==
Soluble in water, acetone, methanol. Decomposed by ethanol and other organic solvents.
Composition 	KMnO4
CAS 	7722-64-7
Melting Point 	240 C (dec)
Density 	2.7032 g/ml
Molecular Weight	mol. wt. = 158.03
==Resources and Citations==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
* Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
* Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7824
* A Glossary of Paper Conservation Terms, Margaret Ellis (ed.), Conservation Center of the Institute of Fine Arts, New York City, 1998
Category:Materials database
Potassium persulfate

== Description ==
White, odorless crystals. Potassium persulfate is used to bleach and de-size textiles. It is used in photographic solution as a hypo eliminator to remove sodium thiosulfate from the plates and paper.
[[[SliderGallery rightalign|potassium persulfate.jpg~Chemical structure]]]
== Synonyms and Related Terms ==
potassium persulphate (Br.); potassium peroxydisulfate; persulfate of potash; Anthion
== Risks ==
* Strong oxidizing agent. 
* Skin contact causes irritation. 
* Toxic by ingestion. 
* Reacts violently with organics and reducing salts. 
* Releases sulfur dioxide gas with decomposition. 
* ThermoFisher: SDS
==Physical and Chemical Properties==
Soluble in water. Insoluble in ethanol.
Composition 	K2S2O8
CAS 	7727-21-1
Density 	2.477 g/ml
Molecular Weight	mol. wt. = 270.32
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 163
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7825
* Photographic chemicals: www.jetcity.com/~mrjones/chemdesc.htm
Category:Materials database
Potassium phosphate

== Description ==
White granular crystals. Potassium phosphate monobasic is used as a buffering agent.
[[[SliderGallery rightalign|potassium phosphate.jpg~Chemical structure]]]
== Synonyms and Related Terms ==
potassium phosphate monobasic; potassium dihydrogen phosphate
== Risks ==
* Contact or inhalation may cause irritation. 
* ThermoFisher: SDS
==Physical and Chemical Properties==
Soluble in water. pH = 4.4-4.7
Composition 	KH2PO4
CAS 	7778-77-0
Melting Point 	253 C
Density 	2.34 g/ml
Molecular Weight	mol. wt. = 136.09
Boiling Point 	400 C (dec)
==Resources and Citations==
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7542
* Richard C. Wolbers, Nanette T. Sterman, Chris Stavroudis, Notes for Workshop on New Methods in the Cleaning of Paintings, J.Paul Getty Trust, Los Angeles, 1990
Category:Materials database
Potassium silicate

== Description ==
Colorless, amorphous material with a variable composition from K2Si2O5 to K2Si3O7. Potassium silicate is used as an ingredient in potash glass. Potash water glass is also used to made carbon electrodes, lead pencils, detergents, and protective coatings.
== Synonyms and Related Terms ==
liquid silicate; potash water glass; soluble potash glass
==Risks==
* Echemi: SDS
==Physical and Chemical Properties==
Soluble in hot water. Insoluble in ethanol.
Composition 	K2SiO3
CAS 	1312-76-2
Refractive Index	1.532, 1.660, 1.730
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 738
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7838
* CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index=1.532, 1.660, 1.730
Category:Materials database
Potassium sodium tartrate

== Description ==
Colorless crystals that is also called Rochelle salts. Potassium sodium tartrate is used in baking powders and in the manufacture of silver mirrors. The complex organic salt has also been used to remove corrosion from bronzes (Lucas 1932).
== Synonyms and Related Terms ==
Rochelle salt; alkaline Rochelle salt; sodium potassium tartrate; Seignette salt; 2,3-dihydroxy-[R-(R*,R*)]-butanedioic acid, monopotassium monosodium salt
==Risks==
* IntegraChem: SDS
==Physical and Chemical Properties==
Soluble in water. Insoluble in ethanol.
Composition 	KNaC4H4O6 - 4H2O
CAS 	304-59-6
Melting Point 	70-80 C
Density 	1.77 g/ml
Molecular Weight	mol. wt. = 210.16
==Resources and Citations==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 68
* Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
* Termlist for conservation - www.hants.org.uk/museums
Category:Materials database
Potassium sulfate

== Description ==
Colorless crystals or white powder. Potassium sulfate is used in the manufacture of gypsum cements, fertilizers, alums, and potassium glass. In a closed environment, a saturated solution of potassium sulfate will form an equilibrium at a relative humidity of about 97% (20C).
[[[SliderGallery rightalign|potassium sulfate.jpg~Chemical structure]]]
== Synonyms and Related Terms ==
potassium sulphate (Br.); sulfate of potash; sulfate of potass; sal polychrest;
== Risks ==
* Toxic in large amounts by ingestion. 
* ThermoFisher: SDS
== Physical and Chemical Properties ==
* Soluble in water (pH about 7) and glycerol. Insoluble in ethanol. 
* Deliquescent point at 20C is 97.2 % RH (see saturated salt solutions)
Composition 	K2SO4
CAS 	7778-80-5
Melting Point 	1067-1072 C
Density 	2.66 g/ml
Molecular Weight	mol. wt. = 174.26
Boiling Point 	1689 C
== Resources and Citations ==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 33
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7845
Category:Materials database
Potassium sulfide

== Description ==
Orange or red crystalline mass. Potassium sulfide has been used for staining and coloring bronze and other metals. It is also used as a photographic toner.
== Synonyms and Related Terms ==
liver of sulfur; potassium monosulfide; dipotassium sulfide; potash sulfurated; hepar sulfuris; potassium sulphide (Br.)
== Risks ==
* Flammable, dangerous fire risk, may ignite spontaneously. 
* Contact causes irritation and may cause corrosion. 
* Toxic by ingestion. 
* MilliporeSigma: SDS
==Physical and Chemical Properties==
Soluble in water, ethanol, glycerol. Insoluble in ether. Aqueous solutions are alkaline. Deliquescent in air; darkens with age.
Composition 	K2S
CAS 	1312-73-8
Melting Point 	910-912 C
Density 	1.74-1.75 g/ml
Molecular Weight	mol. wt. = 110.3
Category:Materials database
Potassium tartrate

== Description ==
White crystals or granular powder. Potassium tartrate is formed when tartaric acid reacts with potassium carbonate.
== Synonyms and Related Terms ==
potassium bitartrate; soluble tartar; vegetable salt; tartrate of potass
== Risks ==
* Contact may cause irritation.
* Echemi: SDS
==Physical and Chemical Properties==
Soluble in water to form a slightly alkaline solution (pH = 7-8). Insoluble in ethanol.
Composition 	K2C4H4O6 - 1/2 H2O
CAS 	921-53-9
Melting Point 	200 C (dec)
Density 	1.98 g/ml
Molecular Weight	mol. wt. = 235.28
==Resources and Citations==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7849
Category:Materials database
Potassium tetraoxalate

== Description ==
White, slightly hygroscopic crystals. Potassium tetroxalate is used as a water soluble source of oxalic acid for removing of rust stains and iron gall inks. It is also used as a cleaner for metals and wood, as a mordant in dyeing and as a photographic chemical.
[[[SliderGallery rightalign|potassium tetroxalate.jpg~Chemical structure]]]
== Synonyms and Related Terms ==
salts of lemon (incorrect); salt of sorrel; potassium quadoxalate; sal acetosella
== Risks ==
* Toxic by ingestion. 
* Sigma Aldrich: SDS
==Physical and Chemical Properties==
* Soluble in water. Insoluble in ethanol
* Decomposes when heated.
Composition 	KHC2O4 - H2C2O4
CAS 	127-96-8
Molecular Weight	mol. wt. = 254.2
==Resources and Citations==
* Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
* Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
* The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 7863
Category:Materials database
Potassium thiocyanate

== Description ==
Colorless, deliquescent crystals. Potassium thiocyanate is used in printing and dyeing textiles. It is also used as an intensifier in photographic developing solutions for color prints.
== Synonyms and Related Terms ==
potassium rhodanide; potassium sulfocyanate; potassium sulfocyanide; Rhocya
== Risks ==
* Highly toxic by ingestion and inhalation. 
* Skin contact causes blisters and burns. 
* Decomposes with heat or acid to form hydrogen cyanide gas. 
* Fisher Scientific: MSDS
==Physical and Chemical Properties==
Soluble in water, ethanol, acetone.
Composition 	KCNS
CAS 	333-20-0
Melting Point 	173 C
Density 	1.88-1.89 g/ml
Molecular Weight	mol. wt. = 97.18
Refractive Index	1.5896, 1.6057, 1.6435
Boiling Point 	500 C (dec)
==Resources and Citations==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7866
* Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
* Photographic chemicals: www.jetcity.com/~mrjones/chemdesc.htm
* CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index=1.5896, 1.6057, 1.6435
Category:Materials database
Potato starch

== Description ==
Polysaccharide granules obtained from the common white potato, Solanum tuberosum. Potato starch is primarily used as a thickening agent for foods in Europe while cornstarch is more commonly use in the United States. When heated with water, potato starch forms a thick, gummy solution that becomes thinner with heating time. It thickens only slightly on cooling to forms a transparent gel that dries to a tough resilient film. Potato starch is used to size paper and textiles. It adds strength and tear resistance to paper.
== Synonyms and Related Terms ==
farina; Arogum [Morningstar-Paisley]; Arojel P
== Risks ==
* Susceptible to biodeterioration. 
* Dried films become brittle with age.
==Physical and Chemical Properties==
* Egg-shaped grains with a faint off-center dark mark (hilum). 
* Granule size = 15-100 micrometers. 
* Gelatinization temperature = 59-68 C 
* Reacts with a iodine/potassium iodide solution to give a positive purple color
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 767
* Rosalie Rosso King, Textile Identification, Conservation, and Preservation, Noyes Publications, Park Ridge, NJ, 1985
* Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989
* Encyclopedia Britannica, http://www.britannica.com Comment: "cereal processing" [Accessed April 8, 2002]
* Irving Skeist, Handbook of Adhesives, Van Nostrand Reinhold Company, New York, 1977 Comment: p. 193
Category:Materials database
Potsdam sandstone

== Description ==
A hard, dense reddish color sandstone quarried near Potsdam in St. Lawrence County, New York. Potsdam sandstone is composed of quartz grains cemented with a siliceous material. It varies in color from a light pink to a reddish brown. It was primarily used for buildings.
== Synonyms and Related Terms ==
Malone sandstone; Adirondack sandstone
== Additional Images ==
File:Adirondack_fireplace.jpg|Potsdam sandstone
File:Adirondack.jpg|Potsdam sandstone
File:Potsdam_sandstone_1.jpg|Potsdam Sandstone
==Resources and Citations==
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
* Frank A. Lent, Trade names and Descriptions of Marbles, Limestones, Sandstones, Granites and Other Building Stones Quarried in the United States Canada and other Countries., Stone Publishing Co, New York, 1925
Category:Materials database
Potter's clay

== Description ==
A find grade native clay that is naturally suited for ceramics. Examples include pure clay, earthenware clay, ball clay, fire clay, Bentonite slip clay and stoneware clay.
== Synonyms and Related Terms ==
potter's earth
==Resources and Citations==
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Potter's pink

== Description ==
A pink ceramic pigment. English pink, or chrome-tin pink, was developed about 1790 by a potter in Staffordshire. The color is produced when chromic oxide and tin oxide fuse in the presence of lime. The color is dependent on particle size and is not always uniform. Pink can also be formed by the combination of chromium and zircon oxides. Potter's pink was occasionally used as a pale pink artists color.
== Synonyms and Related Terms ==
English pink; chrome-tin pink; mineral lake
==Resources and Citations==
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Poultice

== Description ==
A moist, absorbent mass use to soften or extract unwanted components from a treated surface. Poultices may be made from a sponge, a matt of soft fibers, or a gelling material, such as methyl cellulose. Added components, such as solvents, surfactants, enzymes, or chelating agents, are used to solubilize the unwanted components, which then are absorbed by the poultice material.
==Resources and Citations==
* A Glossary of Paper Conservation Terms, Margaret Ellis (ed.), Conservation Center of the Institute of Fine Arts, New York City, 1998
* Wikipedia: http://en.wikipedia.org/wiki/Poultice (Accessed Nov. 9, 2005)
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
Category:Materials database
Pounce

== Description ==
1) A finely powdered pigment used to imprint or transfer a pattern from one surface to another. Pounce is usually composed of charcoal, chalk, pipe clay, or umber.
2) A finely powdered resin used as a sorbent for ink. Resinous pounce is usually composed of sandarac mixed with pumice or cuttlebone. It is sprinkled over calligraphy to prevent the ink from spreading.
== Synonyms and Related Terms ==
1: stamping powder
==Resources and Citations==
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
* Wikipedia: http://en.wikipedia.org/wiki/Pounce_%28calligraphy%29 (Accessed Mar. 1, 2006)
Category:Materials database
Powder coating

== Description ==
A thermosetting resin preparation used to evenly coat metallic pieces without the use of solvents. Powder coatings were introduced about 1960 but only became popular when solvents were tightly restricted at the end of the twentieth century. Electrodeposition is used to uniformly coat a metal object with the finely ground resin, then heat is used to fuse the particles into a hard, resistant film. The coatings are typically 1-3 mm thick.
== Synonyms and Related Terms ==
thermosetting powder (AAT preferred)
==Resources and Citations==
* Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
* A Glossary of Paper Conservation Terms, Margaret Ellis (ed.), Conservation Center of the Institute of Fine Arts, New York City, 1998
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Powdering

== Description ==
A type of stone degradation due to volume expansion associated to salt crystallization. Powdering, or crumbling, of the stone occurs as the mechanical stress disrupts the porous matrix. Highly soluble salts, such as sodium chloride and sodium sulfate, can cause this effect.
==Resources and Citations==
* ICOMOS-ISCS: Illustrated glossary on stone deterioration patterns
Category:Materials database
Powderpost beetle

== Description ==
A dark red to black beetle, Lyctus brunneus, found throughout Europe. Both the powderpost beetle adults and larvae feed on hardwood, such as packing crates, flooring, furniture, tool handles, gunstocks, picture frames, and ornamental pieces. The adult insects are 7 to 9 mm long and have a life span of up to 1 year. The c-shaped white larvae have a brown head. They can grow 3 to 5 mm in length. The larval period lasts from 60 to 270 days. Powderpost beetles produce tunnels with an oval cross section.
== Synonyms and Related Terms ==
Lyctus brunneus; Powder Post beetle; woodboring beetle;
==Resources and Citations==
== Sources Checked for Data in Record ==
* MuseumPest.net at Link
* Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
* Lynda A. Zycherman, J.Richard Schrock, A Guide to Museum Pest Control, FAIC and Association of Systematics Collections, Washington DC, 1988
* G.Caneva, M.P.Nugari, O.Salvadori, Biology in the Conservation of Works of Art, ICCROM, Rome, 1991
Category:Materials database
Pozzolan cement

== Description ==
A cement that contains portland cement (calcium silicate) mixed with ground pozzolana (volcanic rock) and sometimes lime. Pozzolan cement is a hydraulic cement that hardens with water. It is more resistant to corrosive environments than plain portland cement. Pozzolan cement is used for dams, bridge piers, and wall coatings. Artificial pozzolan cement is made with furnace slag (slag cement).
== Synonyms and Related Terms ==
ciment de pouzzolane (Fr.); cimento pozolânico (Port.); pozzolana cement; pozzuolana cement; gaize cement; puzzolan cement; pozzolanic cement; Santorin cement; silikat-cement; tarras cement; trass cement; slag cement
==Resources and Citations==
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
* Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 174
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* George Wheeler paper at www.b72.com/objects/stone/consolidants.html (accessed Aug. 1998)
* Irving Skeist, Handbook of Adhesives, Van Nostrand Reinhold Company, New York, 1977
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000 Comment: pozzolan = preferred term
Category:Materials database
Pozzolana

== Description ==
A rosy red volcanic clay that has been used as a pigment and a component in cement. Pozzolana is mined in Italy at Pozzuoli near Naples. It has been used since ancient times by the Romans. Pozzolana is mixed with lime to form pozzolan cement. It dries slowly but forms a strong surface. Similar cements contain trass and Santorin earth. Pozzolana was also a popular pigment for fresco paintings because it dried quickly to a hard impenetrable surface like cement. Synthetic pozzolanas are made from slag, burnt clay, and powdered brick.
== Synonyms and Related Terms ==
pouzzolane (Fr.); pozolana (Port.); terra di pozzuoli; Pozzuoli red; pozzuolana; pozzolana cement; gaize cement; puzzolan cement; Santorin cement; silikat-cement; tarras cement; trass cement
==Resources and Citations==
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
* Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 174
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Pozzuoli red

== Description ==
A bright, natural red volcanic clay used as a paint pigment. Pozzuoli red, originally mined in Italy at Pozzuoli near Naples, has been used since ancient times by the Romans (see pozzolana). It was popular for fresco paintings because it dried quickly to a hard impenetrable surface like cement.
== Synonyms and Related Terms ==
terra di pozzuoli; pozzuolana; pozzolana; Possuoli earth; Pompeian red
==Resources and Citations==
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
* Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942
* M. Doerner, The Materials of the Artist, Harcourt, Brace & Co., 1934
* R. Mayer, The Artist's Handbook of Materials and Techniques, Viking Press, New York, 1981
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Encyclopedia Britannica, http://www.britannica.com Comment: "Pozzuoli." accessed 7 Apr. 2005 . - for location of Pozzuoli
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database