nyuuzyou/wikis huggingface dataset:
Rosaniline

== Description ==
Colorless needles and plates that forma a red solution. Rosaniline is formed from one molecule of aniline and two of toluidine. All varieties of magenta dyes are salts this tripheylmethane compound. Chlorination of rosaniline produces magenta (rosaniline chloride). Currently, rosaniline is used as a fungicide, fabric dye, and ink colorant. It is also a fluorochrome. It has a mean excitation wavelength of 570 nm (green) and a mean emission wavelength of 625 nm (Wolbers et al. 1990).
== Synonyms and Related Terms ==
roseaniline (sp); pararosaniline; rosaniline hydrochloride (magenta); CI 42500
[[[SliderGallery rightalign|rosaniline.jpg~Chemical structure]]]
== Physical and Chemical Properties ==
Soluble in acids, hot ethanol and aniline. Slightly soluble in boiling water. Insoluble in ether and benzene.
Composition 	C20H19N3
CAS 	25620-78-4
Melting Point 	205 C
Molecular Weight	mol. wt. = 305.38
== Risks ==
* Potential carcinogen. 
* Contact causes irritation. 
* Fisher Scientific: MSDS
== Resources and Citations ==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* 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
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983
* F. Crace-Calvert, Dyeing and Calico Printing, Palmer & Howe, London, 1876
* Aldrich Chemical Catalog
Category:Materials database
Rose Crystal marble

== Description ==
A calcite marble with large crystals of white, pale pink and dark pink and flecks of black mica, green pyroxene and black tourmaline. Rose Crystal marble is quarried in Warren County, New Jersey (Lent 1925). Once used as a decorative stone, the quarries ceased production by the early 20th century.
==Resources and Citations==
* F.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
Rose Fantasia marble

== Description ==
A hard, coarse-grain, variegated marble quarried in Hastings County, Ontario (Lent 1925). Rose Fantasia has a shiny mica matrix with bright large and small patches of red, salmon, white and green. It was used for interior decoration.
==Resources and Citations==
* 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
Rose lake

== Description ==
Initially, rose lake was dark red lake pigment made from brazilein dye on an aluminum or tin mordant. In the 19th century, rose lake was made from aniline red dyes. Both formulations produced fugitive colors.
== Synonyms and Related Terms ==
madder lake; rose pink
==Resources and Citations==
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
Category:Materials database
Rose madder

== Description ==
A natural dark pink madder colorant. Rose madder became popular as an artist pigment after the madder plant was imported to Holland in the 16th century. The colorant was extracted from madder roots with an acid, then the precipitate, primarily pseudopurpurin, was redissolved in alum then reprecipitated with calcium carbonate (chalk) to produce a pink lake (Schweppe and Winter 1997).
== Synonyms and Related Terms ==
Natural red 9; rosa de garança (Port.); rose de garance (Fr.);
[[[SliderGallery rightalign|Rose Madder 103.TIF~FTIR (MFA)]]]
==Physical and Chemical Properties==
ASTM (1999) lightfastness = IV (poor)
== Additional Images ==
File:01.7723 BT front.jpg|Statue under normal lighting conditions; MFA# 01.7723
File:01.7723 BT front uv.jpg|Statue under ultraviolet light; MFA# 01.7723
File:30_Rose_madder_200X.jpg|Rose madder
==Resources and Citations==
* H.Schweppe, J.Winter, "Madder and Alizarin", Artists Pigments, Volume 3, E. West FitzHugh (ed.), Oxford University Press: Oxford, 1997.
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Comment: www.handprint.com - ASTM lightfastness = IV
Category:Materials database
Rose quartz

== Description ==
A pink quartz used as a gemstone and ornamental stone. Rose quartz has been mined or gathered since the early iron age (1200-500 BCE). It is found in the Ural Mountains, Czech Republic, Germany (Bavaria), Scotland, Ireland, Sweden, Italy, India, Madagascar, Namibia, Brazil (Minas Gerais), and the U.S.(South Dakota, California, Montana, South Dakota, Maine). Rose quartz ranges in color from a pale pink to a deep rose red. Transparent rose quartz is used as a gemstone while translucent varieties have been used for vases, ornaments and architectural elements. Some rose quartz may have needlelike inclusions of rutile that induce a star-shaped chatoyancy.
== Synonyms and Related Terms ==
quartz; Rosenquarz (Deut.); cuarzo rosa (Esp.); quartz rose (Fr.); quartzo roseo (Port.); Rosenquarz (Deut.); roze kwarts (Ned.)
[[[SliderGallery rightalign|Quartz.TIF~FTIR (MFA)|Quartz, collodion slide, 785 nm copy.tif~Raman (MFA)|rosequartzRS.jpg~Raman (Rasmin)|QUARTZ1.jpg~XRD (MFA)]]]
== Physical and Chemical Properties ==
* Trigonal crystal system 
* Low thermal expansion 
* Fracture = conchoidal 
* Luster = vitreous to greasy 
* Streak = white
* Fluorescence = inert to weak purple under SW
* Pleochroism = none
Composition 	SiO2
Mohs Hardness 	7.0
Density 	2.65 g/ml
Refractive Index	1.544 - 1.553
Birefringence 	0.009
== Comparisons ==
== Additional Images ==
File:rosequartzkes.jpg|Carved rose quartz
File:Rosenquarzkes.jpg|Rose quartz
==Resources and Citations==
* Gem Identification Lab Manual, Gemological Institute of America, 2016.
* Mineralogy Database: Quartz
* Jack Odgen, Jewellery of the Ancient World, Rizzoli International Publications Inc., New York City, 1982
* A.Lucas, J.R.Harris, Ancient Egyptian Materials and Industries, Edward Arnold Publishers Ltd., London, 4th edition, 1962
* Encyclopedia Britannica, http://www.britannica.com Comment: "rose quartz." Accessed: 14 Sept. 2001 .
* C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979
* Wikipedia: http://en.wikipedia.org/wiki/Rose_quartz (Accessed Sept. 14, 2005)
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p.647
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
Category:Materials database
Roseine

== Description ==
Green prismatic crystals. Roseine is prepared by treating rosaniline with acetic acid. It gives a brick red solution in water.
== Synonyms and Related Terms ==
pararosaniline acetate; 4-(4-aminophenyl)(4-Imino-2,5-Cyclohexadiene-1yi)-benzenamine
== Risks ==
* Potential carcinogen. 
* May be toxic by inhalation and ingestion. 
* Contact may cause irritation.
* NIH: Info page
==Physical and Chemical Properties==
Composition 	C21H21N3O2
CAS 	6035-94-5
Melting Point 	205 C
Molecular Weight	mol. wt. = 347.41
==Resources and Citations==
* F. Crace-Calvert, Dyeing and Calico Printing, Palmer & Howe, London, 1876
Category:Materials database
Roselle

== Description ==
Bast fibers obtained from the stems of the Hibiscus sabdariffa plant that is grown commercially in Central and South America, Brazil, Africa, West Indies, and the East Indies. Roselle is used as a substitute for jute in burlap coffee bags. Roselle is sometimes called kenaf because of its similarities. The dried red calyces are also used as a colorant in food products.
== Synonyms and Related Terms ==
rosella; kenaf; Siam jute (Thailand); mesta (India, Pakistan); ke-nap (Vietnam); carcadé (Fr.); bissap (Fr.); wanjo (Gambia); zobo (Nigeria); karkarde (Egypt, Sudan); omutete (Namibia); sorrel (Caribbean); jamaica (Latin America); vinagreira (Port.) quiabo-roxo (Port.)
==Physical and Chemical Properties==
* Bush growing to 2-3 m tall. 
* Leaves=three to five deep lobes (8-15 cm long). 
* Fiber cross section = polygonal
==Resources and Citations==
* Marjory L. Joseph, Introductory Textile Science, Holt, Rinehart and Winston, Fort Worth, TX, 1986
* J.Gordon Cook, Handbook of Textile Fibres:I Natural Fibres, Merrow Publishing Co. , Durham, England, 1984
* Identification of Textile Materials, The Textile Institute, Manchester, England, 1985
* Wikipedia: http://en.wikipedia.org/wiki/Roselle_%28Plant%29 (Accessed Feb. 2, 2006)
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 427
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
Category:Materials database
Rosemary oil

== Description ==
An evergreen shrub, Rosemarinus officinalis, with a minty aromatic smell that is native to the Mediterranean region. Rosemary leaves have been crushed, then distilled to form oil, since ancient times. The leaves contain camphor and oxygenated monoterpenoids. Rosemary oil is slightly greenish, evaporates slowly and is a strong solvent. It has been used as a retardant in oil painting but excess amounts can make the colors sticky and cause darkening. Rosemary oil was also used in perfumes, soaps, medicine and in tanning leather.
== Synonyms and Related Terms ==
Rosemarinus officinalis; esencia de romero (Esp.); olio di rosmarino (It); essenza di rosmarino (It)
==Physical and Chemical Properties==
Soluble in ethanol.
==Resources and Citations==
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8423
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 589
* M. Doerner, The Materials of the Artist, Harcourt, Brace & Co., 1934
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* John S. Mills, Raymond White, The Organic Chemistry of Museum Objects, Butterworth Heineman, London, 2nd ed., 1994
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Rosendale cement

== Description ==
A natural cementous material. Rosendale cement is produced from magnesia limestone found in the valleys along the Hudson, James, Mohawk and Potomac rivers. It was first manufactured in Rosendale NY in 1837.
==Resources and Citations==
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
* George Wheeler paper at www.b72.com/objects/stone/consolidants.html (accessed Aug. 1998)
Category:Materials database
Rosewood oil

== Description ==
An essential oil distilled from the heartwood of the Aniba panurensis trees found in Brazil. Rosewood oil contains linalol, an alcohol that smells like rose. It is also known as bois de rose oil, Cayenne linaloe and Cayenne oil.
See linaloe oil.
== Synonyms and Related Terms ==
Aniba panurensis; bois de rose oil; esencia de palo de rosa (Esp.); Cayenne linaloe; Cayenne oil; linaloe oil
Category:Materials database
Rosin wax

== Description ==
This is likely a mixture of beeswax with some added pine resin. Rosin wax is a hard wax used as a sealing wax and as a shoemaker's polish.
[[[SliderGallery rightalign|MFA- Rosen Wax.jpg~FTIR]]]
== Synonyms and Related Terms ==
rosen wax
Category:Materials database
Ross board

== Description ==
A brand name for a line of textured boards with an embossed or stippled surface (Mayer 1969).
==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, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Rosso antico marble

== Description ==
1) A fine-grain, pink to deep red marble with occasionally thin black veins and white markings. Rosso antico marble was used for sculptures by ancient Greeks, Romans, and Estrucans. It was quarried above the village of Agios Kyprianos on the east coast of Cape Tenaro (Cape Matapan) in Greece. Rosso antico marble was primarily used for small decorative architectural features, although it was also used for a few sculptures. A similar red marble was quarried in ancient times at Iasos, Province of Milas, in Asia Minor (marmor Iassense rosso). The red marble from Iasos can sometimes be distinguished by its larger grain size and variations in trace elements (Gorgoni et al, 2002; Lazzarini, 1990). 2) A red quartz and feldspar rock used by ancient Egyptian sculptors. 3) A matte, red glaze on ceramics.
== Synonyms and Related Terms ==
marmor Taenarium (Lat.); marmor Iassense rosso (Lat.)
==Resources and Citations==
* Ancient Trade Routes: Website
* Gorgoni C., Lazzarini L., Pallante P., 2002, New archaeometric data on Rosso Antico and other red marbles used in antiquity. In “ASMOSIA VI, Interdisciplinary Studies on Ancient Stone” (L.Lazzarini ed.), Padova, 199-206. 
* Lazzarini L., 1990, Rosso Antico and other red marbles used in antiquity: a characterization study. In “Marble, Art History and Scientific Perspectives on Ancient Sculpture”, Malibu, 237-252.
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Janet Burnett Grossman, Looking at Greek and Roman Sculpture in Stone, J. Paul Getty Trust, Los Angeles, 2003 Comment: .. quarried in three places during antiquity: 1) on Cape Tainaron present day Matapan on the Peloponnese of Greece; 2) on Crete; and 3) at the site of Iasos in Asia Minor
* External source or communication Comment: Andy Bostock, contributed information, June 2008
Category:Materials database
Rotenone

== Description ==
Odorless, colorless, crystals that are highly toxic to insects and fish but only mildly toxic to mammals. Rotenone naturally occurs in derris root and cubé. It was first isolated in 1895 by E. Geoffroy from the plant now called Lonchocarpus nicou. This powdered plant was used to catch fish by poisoning them. The pesticide is still used to eradicate exotic fish from non-native habitats. Rotenone is also used as an insecticide, particularly in home gardens, due to its low toxicity to mammals. USDA allowed rotenone to be used on organic produce until 2005.
[[[SliderGallery rightalign|rotenone.jpg~Chemical structure]]]
== Synonyms and Related Terms ==
Tubatoxin; Prentox; Rotocide; Barbasco; Chem Fish; Cube; Deril
== Risks ==
* Combustibe. 
* Decomposes on exposure to light and air. 
* Ingestion, inhalation, and skin absorption causes irritation. 
* Generally considered nontoxic to mammals but can cause death in large doses. 
* Cayman Chemical: SDS
==Physical and Chemical Properties==
Soluble in alcohol, benzene, acetone, carbon tetrachloride, chloroform, ether. Insoluble in water.
Composition 	C23H22O6
CAS 	83-79-4
Melting Point 	165-166 C
Density 	1.27 g/ml
Molecular Weight	mol. wt. = 394.4
Boiling Point 	210-220 C
==Resources and Citations==
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8138
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* Wikipedia: Rotenone (accessed Jan. 9 2009)
Category:Materials database
Rottenstone

== Description ==
A fine abrasive composed of powdered siliceous-argillaceous limestone. Rottenstone is composed of about 85% alumina, 4-15% silica and 5-10% iron oxides. It was primarily mined in England but small amounts were also mined in Pennsylvania. Rottenstone is used as a powder or adhered to polishing cloths. It is softer and finer than pumice. Applications include polishing metal, jewelry and wood.
== Synonyms and Related Terms ==
rotten stone
== Comparisons ==
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 824
* R.M.Organ, Design for Scientific Conservation of Antiquities, Smithsonian Institution, Washington DC, 1968
* Conservation Support Systems, Catalog, 1997
* 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
Rottlerin

== Description ==
A natural yellow compound which is the principal colorant in kamala dye.
== Synonyms and Related Terms ==
mallotoxin
==Risks==
* MilliporeSigma: SDS
==Physical and Chemical Properties==
* Soluble in ethyl acetate, ether, chloroform, benzene, toluene. Insoluble in water. 
* Crystals form as pale brown plates or needles.
Composition 	C30H28O8
Melting Point 	212 C
Molecular Weight	516.55
==Resources and Citations==
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8429
Category:Materials database
Rouge

== Description ==
A pure, finely powdered red iron oxide. Rouge is synthetically made by calcining ferrous sulfate. It ranges in color from bright red to dark. In general, the darker color indicates a harder grain. Rouge has rounded particles that burnish rather than scratch. It is used as a polishing agent for glass, metals, and jewelry. Very fine, ultrapure rouge is called jewelers' rouge.
== Synonyms and Related Terms ==
polishing rouge; polishing crocus
==Physical and Chemical Properties==
* Mohs Hardness = 5.5 - 6.5
 
== Comparisons ==
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p.674
* Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
* R.M.Organ, Design for Scientific Conservation of Antiquities, Smithsonian Institution, Washington DC, 1968
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Roughcast

== Description ==
A coarse, textured plaster finish coat often seen on the exterior of English cottages. Roughcast coatings are made by throwing shells or pebbles into the wet plaster surface.
== Synonyms and Related Terms ==
rough cast; harl; harle
==Resources and Citations==
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Rousette leather

== Description ==
A type of leather made from small shark found in the Mediterranean. The name rousette has also been used for a vegetable tanned goatskin prepared with a pebbly grain (Brady 1971). 
See also shagreen.
== Synonyms and Related Terms ==
Boroso sharkskin; Morocco leather; piel de pintarroja (Esp.)
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 704
Category:Materials database
Roving

== Description ==
Fibers that have been cleaned and lightly twisted together. Rovings are produced as an intermediate step in the preparation of yarn.
== Synonyms and Related Terms ==
slubbing; mecha (Esp.)
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971
* Hoechst Celanese Corporation, Dictionary of Fiber & Textile Technology (older version called Man-made Fiber and Textile Dictionary, 1965), Hoechst Celanese Corporation, Charlotte NC, 1990
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Rubber (chlorinated)

== Description ==
An odorless, pale yellow resin prepared by adding up to 65% chlorine to an elastomer, such as natural rubber, butyl rubber, or styrene-butadiene. Chlorination of rubber allowed it to cure very fast and allowed the copolymerization of natural and synthetic rubbers. Chlorinated rubbers were also harder and more durable than their non-halogenated counterparts. It was also used to produce a hard tough, glossy film that was used in the 1950s -60s for paints, varnishes, adhesives, inks and paper coatings. Chlorinated rubber is still used for waterproof paints on floors and swimming pools. It is very resistant to chemicals and moisture.
== Synonyms and Related Terms ==
chlorinated rubber; Chloroprene; Neoprene; caucho clorado (Esp.); borracha clorada (Port.) 
Examples: Parlon; Hypalon
== Risks ==
* Nonflammable. 
* Reacts violently when heated with zinc oxide.
==Physical and Chemical Properties==
* Soluble in toluene, ethylene dichloride. Insoluble in aliphatic and alcohols. 
* Resistant to acids and alkalis.
* Density = 1.64 g/ml
== Comparisons ==
== Resources and Citations ==
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Thomas J.S. Learner, Analysis of Modern Paints, Getty Conservation Institute, Los Angeles, 2004 Comment: p. 23
Category:Materials database
Rubber (synthetic)

== Description ==
Any man-made elastomer. The development of synthetic rubbers was stimulated when rubber imports ceased in 1941 due to Japanese occupation in southeast Asia. Within 3 years, US manufacturers had developed over nine types of elastomers. Most age better than natural rubber but are still susceptible to degradation by ozone and ultraviolet light. All rubbers must be chemically vulcanized to form an stable product. The unsaturated materials are vulcanized with sulfur while others are vulcanized with peroxide, metallic oxide, or diisocyanates. 
== Synonyms and Related Terms ==
synthetic rubber; caucho sintético (Esp.); caoutchouc synthétique (Fr.); gomma sintetica (It.); borracha sintética (Port.) 
== Examples of Synthetic Rubbers ==
Table of Selected polymers belonging to this polymer class (links are for CAMEO pages)
Polymer name 	Properties of Concern
Polybutadiene (Buna) 	Compounded with a wide variety of materials
Polystyrene 	Compounded with a wide variety of materials
Nitrile rubber (NBR) 	Some NBR are blended with PVC and contain chloride
Styrene-butadiene rubber (SBR) 	Tendency to crawl; Compounded with a wide variety of materials
Acrylonitrile butadiene styrene (ABS)	Compounded with a wide variety of materials
Ethylene propylene rubber (EPR) 	
Ethylene propylene diene (EPDM) 	May be crosslinked with other products with sulfur vulcanization
Butyl rubber (Isoprene) 	
Neoprene (polychloroprene) 	Chlorinated, may off-gas acids
Polysulfide 	May contain PCB’s, can cause damage to metals when in contact with stainless and carbon steels
Polyurethane (Spandex) 	Problematic class of materials
Silicone Rubber 	Off-gassing depends on the initial curing system, platinum based cures have no off-gassing; condensation cures can produce acid, neutral or basic chemicals during curing; peroxide cures can produce ketones or chlorinated aromatic chemicals as the material ages and breaks down.
==Resources and Citations==
* Contribution: Molly McGrath, AIC Plastics Panel, 2020.
* Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
* M.Kaufman, The First Century of Plastics, The Plastics and Rubber Institute, London, 1963
* Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
Category:Materials database