nyuuzyou/wikis huggingface dataset:
Ume (Japanese plum) - left (39 L)

[[[SliderGallery rightalign|Uemura_04-09-2009_039.jpg~Normal|Uemura_04-09-2009_039_UV.jpg~UV]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 39
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 1st shelf
|-	
! scope="row"|Sample location
| left (39 L)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| light ochre
|-	
! scope="row"|Dyestuff (Japanese common name)
| 梅 : Ume
|-	
! scope="row"|Dye (English common name)
| Japanese plum
|-	
! scope="row"|Dyestuff (botanical name)
| Armeniaca mume (Siebold et Zucc.) de Vriese (Prunus mume Siebold et Zucc.)
|-	
! scope="row"|Plant part
| heartwood /unspecified
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| iron
|-	
! scope="row"|Other auxiliary agent
| ash water
|-	
! scope="row"|Uemura's notes
| By mordanting with ash water, the resultant color would become pale red purple. By mordanting with iron, the color would shift toward ochre tone. The results were similar when dyed with its bark. "".
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Ume (Japanese plum) - right (36 R)

[[[SliderGallery rightalign|Uemura_04-09-2009_036.jpg~Normal]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 36
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 1st shelf
|-	
! scope="row"|Sample location
| right (36 R)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| light brown
|-	
! scope="row"|Dyestuff (Japanese common name)
| 白花の梅 : Ume
|-	
! scope="row"|Dye (English common name)
| Japanese plum (white flower)
|-	
! scope="row"|Dyestuff (botanical name)
| Armeniaca mume (Siebold et Zucc.) de Vriese (Prunus mume Siebold et Zucc.)
|-	
! scope="row"|Plant part
| heartwood /unspecified
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| lime water (supernate)
|-	
! scope="row"|Other auxiliary agent
| lime water
|-	
! scope="row"|Dyeing process
| The mordant was directly added into the dye bath.
|-	
! scope="row"|Uemura's notes
| The resultant color would be same when dyed with its bark, and those plum tree with red flower. Preparing the dye bath and mordant bath separately would still have the same result. Mordanting with lime water would shift the color towards yellow brown. In absence of the mordant, the dye compound(s) would not fix to fiber well, and only generate pale red.
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Ume (Japanese plum) - right (38 R)

[[[SliderGallery rightalign|Uemura_04-09-2009_038.jpg~Normal]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 38
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 1st shelf
|-	
! scope="row"|Sample location
| right (38 R)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| yellowish brown
|-	
! scope="row"|Dyestuff (Japanese common name)
| 梅 : Ume
|-	
! scope="row"|Dye (English common name)
| Japanese plum
|-	
! scope="row"|Dyestuff (botanical name)
| Armeniaca mume (Siebold et Zucc.) de Vriese (Prunus mume Siebold et Zucc.)
|-	
! scope="row"|Plant part
| unspecified
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| lime
|-	
! scope="row"|Other auxiliary agent
| lime water
|-	
! scope="row"|Uemura's notes
| By using a larger quantity of lime, the color shifted toward more yellow tone. Resultant color would become black tone with iron mordant. The results would be similar when dyed with its bark. "".
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Ume (Japanese plum) - right (39 R)

[[[SliderGallery rightalign|Uemura_04-09-2009_039.jpg~Normal|Uemura_04-09-2009_039_UV.jpg~UV]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 39
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 1st shelf
|-	
! scope="row"|Sample location
| right (39 R)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| white
|-	
! scope="row"|Dyestuff (Japanese common name)
| 梅 : Ume
|-	
! scope="row"|Dye (English common name)
| Japanese plum
|-	
! scope="row"|Dyestuff (botanical name)
| Armeniaca mume (Siebold et Zucc.) de Vriese (Prunus mume Siebold et Zucc.)
|-	
! scope="row"|Plant part
| heartwood /unspecified
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| -
|-	
! scope="row"|Other auxiliary agent
| ash water
|-	
! scope="row"|Uemura's notes
| By mordanting with ash water, the resultant color would become pale red purple. By mordanting with iron, the color would shift toward ochre tone. The results were similar when dyed with its bark. "".
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Ume (Japanese plum) - top (37 T)

[[[SliderGallery rightalign|Uemura_04-09-2009_037.jpg~Normal]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 37
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 1st shelf
|-	
! scope="row"|Sample location
| top (37 T)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| pale brown
|-	
! scope="row"|Dyestuff (Japanese common name)
| 梅 : Ume
|-	
! scope="row"|Dye (English common name)
| Japanese plum
|-	
! scope="row"|Dyestuff (botanical name)
| Armeniaca mume (Siebold et Zucc.) de Vriese (Prunus mume Siebold et Zucc.)
|-	
! scope="row"|Plant part
| heartwood /unspecified
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| lime water
|-	
! scope="row"|Other auxiliary agent
| lime water
|-	
! scope="row"|Dyeing process
| Lime water was mixed into the dye bath.
|-	
! scope="row"|Uemura's notes
| "". The resultant color would not be different whether the iron mordant was mixed in the dye bath or prepared as a separate bath. By increasing the amount of lime water added, the resultant color became more purple black tone. The resultant colors were same when dyed with its bark.
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Un-du Adhesive Remover

== Description ==
[un-du Products, Inc, Dallas TX] A registered trademark for a sprayed on solvent used to remove adhesive tape, labels, and residues. un-du Adhesive Remover contains n-heptane as a solvent.
== Synonyms and Related Terms ==
undu sticker and tape remover
== Risks ==
* Volatile. 
* Flammable.
* un-du Adhesive Remover: https://www.un-du.com/Safety-Data-Sheets.html SDS]
==Resources and Citations==
* un-du Products: Website
Category:Materials database
Underfur

== Description ==
The bottom or underlayer of short soft hairs in some mammals. The underfur is often curly and dense. In some animals, the underfur is the only hair layer, such as in wool. In other animals, such as mink or beaver, the underfur is covered with long, stiff guard hairs.
== Synonyms and Related Terms ==
ground hair
== Resources and Citations ==
* Website: http://www.nationmaster.com/encyclopedia/Fur
Category:Materials database
Underglaze

== Description ==
The first glaze coat on a multi-coat fired ceramic.
== Additional Images ==
File:1985.334-C43143CR-d1.jpg|Cobalt blue underglaze1985.334
File:50.1339-SC12558.jpg|Cobalt blue underglazeMFA# 50.1339
File:50.2212-SC96253.jpg|Cobalt blue underglazeMFA# 50.2212
==Resources and Citations==
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
* Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992
Category:Materials database
Unki

== Description ==
A bright yellow natural dyestuff obtained from the fruit of the Gardinia florida that is native to the East Indies (Hofenk-de Graaf 1969). Unki has been used to dye silk a bright yellow color. The primary colorant in unki is crocetin. Crocetin is a substantive dye that is also found in saffron.
==Physical and Chemical Properties==
* Crocetin is soluble in water, ethanol, alkali solutions. 
* Crocetin forms a blue solution in concentrated sulfuric acid.
==Resources and Citations==
* J.Hofenk-de Graaf, Natural Dyestuffs: Origin, Chemical Constitution, Identification, Central Research Laboratory for Objects of Art and Science, Amsterdam, September 1969.
Category:Materials database
Unsaturated polyesters

== Description ==
A type of polyester resin that has a vinyl unit in the polyester backbone.
== Synonyms and Related Terms ==
polésteres insaturados (Esp.); polyesters insaturés (Fr.); poliesteri insaturi (It.); poliéster insaturado (Port.)
==Resources and Citations==
* Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
Category:Materials database
Upson board

== Description ==
[Niagara Fiberboard] A brand name for a series of fiberboards made from recycled wood fibers that was developed in the mid-20th century. The cellulose fibers are bonded into sheets, laminated with adhesives then compressed into a high-density boards. Upson products are available in boards of 1/8" to 5/8" thickness with a variety of decorative surface finishes such as linen and pebbled. Upson boards are weather resistant, lightweight and strong. They have been used for a wide range of applications such as game boards, display boards, wall paneling, foam lamination as well as interior and exterior building construction.
== Synonyms and Related Terms ==
Upsonite
Category:Materials database
Uranine

== Description ==
--turned off--See fluorescein sodium
== Synonyms and Related Terms ==
uranine yellow; sodium fluorescein; soluble fluorescein; resorcinolphthalein sodium; CI 45350
==Physical and Chemical Properties==
Soluble in water. Slightly soluble in ethanol.
Composition 	Na2C20H10O5
CAS 	518-47-8
Molecular Weight	mol. wt. = 376.27
==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 4194
Category:Materials database
Uranium

== Description ==
A naturally radioactive metallic element. Uranium was discovered in 1781 by Sir William Herschel and isolated by Klaproth in 1789. It has an abundance of 2.1 ppm in the earth's crust and primarily occurs in pitchblende, coffinite, and carnotite ores. Uranium ores are mined in France, Zaire, Canada, South Africa, Australia, Russia, and the U.S. (Colorado, New Mexico, Utah). Uranium is a silvery white metal that is ductile and malleable. It polishes to a high gloss but tarnishes quickly in air. Uranium undergoes a series of nuclear fission reactions to eventually produce lead. Because these reactions are used in nuclear weapons and nuclear powder plants, radioactive uranium has not been commercially available since 1944. Uranium salts and depleted uranium oxides are used as mordants for dyes, toners in photography, and pigments in glass, paints, and ceramics. Uranium oxides produce red and orange colors at about 940 C while slightly higher temperatures give a soft yellow color (Kawai's yellow). It can turn gray or black at temperatures above 1260 C.
== Synonyms and Related Terms ==
U; uranium salts; Kawai's yellow
== Risks ==
* Flammable. Burns in air at 150-175 C. Powder ignites spontaneously in air. 
* Highly toxic. 
* Radioactive. 
* Contact causes burns. 
* Suspected carcinogen. 
* USDE: SDS
==Physical and Chemical Properties==
Reactive with all metals, water, acids and peroxides. Inert to alkalis.
Composition 	U (atomic no. 92)
CAS 	7440-61-1
Melting Point 	1132-1133 C
Density 	19.05 g/ml
Molecular Weight	atomic wt = 238.029
Boiling Point 	3818 C
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 834
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992
* Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
* 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 9990
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
Category:Materials database
Uranium dioxide

== Description ==
Black, highly toxic, crystals. Radioactive uranium dioxide is primarily used in nuclear fuel rods. See also uranium yellow.
== Synonyms and Related Terms ==
black uranium oxide; uranous oxide; urania
== Risks ==
* Powder ignites spontaneously in air. 
* Highly toxic by ingestion and inhalation. 
* Human carcinogen. 
* Radioactive. 
* USDE: SDS
==Physical and Chemical Properties==
Soluble in nitric acid and concentrated sulfuric acid. Insoluble in water.
Composition 	UO2
CAS 	1344-57-6
Melting Point 	2865 C
Density 	10.97 g/ml
Molecular Weight	mol. wt. = 270.07
Category:Materials database
Uranium oxide, depleted

== Description ==
Although expensive, the depleted uranium oxide is sometimes used as a pigment in glazes. It produces red and orange colors at about 940 C while slightly higher temperatures give a soft yellow color (Kawai's yellow). It can turn gray or black at temperatures above 1260 C.
== Synonyms and Related Terms ==
Kawai yellow
== Risks ==
* Highly toxic by ingestion and inhalation. Human carcinogen.
* May explode or self-ignite in air.
* EPA: info
== Physical and Chemical Properties ==
* Insoluble in water, alcohols, and alkalies.
* Soluble in acetone, acids.
Composition	U3O8
CAS # 	7440-61-1
Density 	7.3 g/ml
==Resources and Citations==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992
Category:Materials database
Uranium yellow

== Description ==
Toxic, yellow-orange powder used as a pigment for ceramics and glass before 1944. Uranium yellow, or uranium trioxide gives a bright transparent yellow with a green fluorescence. The expensive, but permanent, pigment may also have been used in mineral painting. Currently, uranium pigments for glazes are made from depleted uranium oxide.
== Synonyms and Related Terms ==
uranium trioxide; amarillo de uranio (Esp.); jaune d'uranium (Fr.); amarelo de urânio (Port.); uranium oxide; yellowcake; yellow cake
== Risks ==
* Highly toxic by ingestion and inhalation. 
* Human carcinogen. 
* Radioactive.
== Physical and Chemical Properties ==
Composition	UO3
==Resources and Citations==
* 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
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 835
* 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 9997
* Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
* 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
Uranyl nitrate

== Description ==
A yellow powder with rhombic crystals. Uranyl nitrate is used as an intensifier for black and white photographs. It is also used as a yellow pigment in ceramic glazes.
== Synonyms and Related Terms ==
uranium nitrate (incorrect); uranium oxynitrate, UNH; yellow salt
== Risks ==
* Toxic by ingestion, inhalation and skin absorption. 
* Causes liver and kidney damage. 
* Skin contact causes irritation and burns. 
* Strongly oxidizing. 
* Fire and explosion risk with percussion. 
* USDE: SDS
==Physical and Chemical Properties==
* Soluble in water, ethanol, acetone, ether. Insoluble in benzene, toluene, chloroform. 
* Crystals are triboluminescent when rubbed or crushed. 
* May also occur as hexahydrate (mw=502.13)
Composition 	UO2(NO3)2
CAS 	10102-06-4 (anhydrous)
Melting Point 	60.2 C
Density 	2.807 g/ml
Molecular Weight	mol. wt. = 394.04
Boiling Point 	118 C
==Resources and Citations==
* 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 10000
* Photographic chemicals: www.jetcity.com~mrjones/chemdesc.htm 
* Wikipedia: http://en.wikipedia.org/wiki/Uranyl_nitrate (Accessed Jan. 15, 2006)
Category:Materials database
Urea

== Description ==
White, tetragonal prism shaped crystals with an ammonia odor. Urea was discovered in 1773 by Hilaire-Marin Rouelle as a constituent of urine. It was first synthesized by Friedrich Wohler in 1828. Urea is used in the manufacture of fertilizers, plastics (polyurethanes), and flameproofing agents. It is also used as a viscosity modifier for starch and casein based paper coatings. Urea is also used by the paper industry to soften cellulose. Urea rapidly denatures proteins.
[[[SliderGallery rightalign|Urea.TIF~FTIR(MFA)|urea.jpg~Chemical structure]]]
== Synonyms and Related Terms ==
carbamide; carbonyldiamide; urinstof (Dan.); Harnstoff (Deut.); urea(Esp., It., Sven.); urée (Fr.); ureum (Ned.); mocznik (Pol.); uréia (Port.)
== Risks ==
* Noncombustible. 
* ThermoFisher: SDS
==Physical and Chemical Properties==
Soluble in water, ethanol, benzene. Slightly soluble in ether. Insoluble in chloroform.
Composition 	CO(NH2)2
CAS 	57-13-6
Melting Point 	132.7 C
Density 	1.335 g/ml
Molecular Weight	mol. wt. = 60.06
==Resources and Citations==
* Palmy Weigle, Ancient Dyes for Modern Weavers, Watson-Guptill Publications, New York, 1974
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 10005
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 836
* 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
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* Wikipedia: http://en.wikipedia.org/wiki/Urea (Accessed Nov. 29, 2005) for language synonyms
* 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
Urea formaldehyde resin

== Description ==
An important class of amino resins. Urea formaldehyde plastic was first made in 1896 by condensing urea with formaldehyde to form a water-soluble resin. It was patented as a molding powder in 1923 called Pollapas by Frits Pollack. The thermoplastic resin was molded with heat and pressure into colorful household products. Urea formaldehyde resins soon replaced the thiourea resins (Beetle resin). Currently urea formaldehyde resins are most often used in foams, insulation, coatings ((baked enamels) and adhesives (plywood, particle board, etc.). They are degraded by heat, acids, and alkalis.
== Synonyms and Related Terms ==
UF; urea-formaldehyde resin (AAT); urea resin; resina urea-formaldehído (Esp.); résine urée-formaldéhyde (Fr.); resina de ureia formaldeído (Port.) 
Examples: Pollapas; Kaurit S; Beetle; Resopal; Cibanoid
== Applications ==
== Risks ==
Toxic by inhalation. Skin contact can cause irritation and allergies. Slowly evolves formaldehyde and ammonia.
== Physical and Chemical Properties ==
Soluble in water.
CAS 	9001-05-6
Density 	1.47-1.52 g/ml
Refractive Index	1.54
== Comparisons ==
== Resources and Citations ==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 837
* Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Caring for your Collections, Arthur W Schulz (ed.), Harry N. Abrams, Inc. , New York, 1992
* Rosalie Rosso King, Textile Identification, Conservation, and Preservation, Noyes Publications, Park Ridge, NJ, 1985
* Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
* Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
* 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
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
* Sharon Blank, An introduction to plastics and rubbers in collections, Studies in Conservation, 35, 53-63, 1990
* History of Plastics: www.nswpmith.com.au/historyofplastics.html
Category:Materials database
Urena

== Description ==
A bast fiber obtained from the Urena lobata plant that is native to Brazil, west Africa and Madagascar. Urena was used since prehistoric times. Small amounts of urena have been cultivated as a fiber plant in the tropical regions of Africa since the 1920s. Urena is a white, soft fiber with a natural luster. It is used for inexpensive clothing and sackcloth.
== Synonyms and Related Terms ==
Urena lobata; Congo jute
==Physical and Chemical Properties==
* Fiber length = 1.2 m
==Resources and Citations==
* J.Gordon Cook, Handbook of Textile Fibres:I Natural Fibres, Merrow Publishing Co. , Durham, England, 1984
* 20th Century Materials, Testing and Textile Conservation, 9th symposium, Harpers Ferry Regional, 1988
* Identification of Textile Materials, The Textile Institute, Manchester, England, 1985
* Marjory L. Joseph, Introductory Textile Science, Holt, Rinehart and Winston, Fort Worth, TX, 1986
Category:Materials database
Urethane

== Description ==
White crystalline powder. Urethane is used in the manufacture of pharmaceuticals, pesticides, and polyurethane resins.
[[[SliderGallery rightalign|urethane.jpg~Chemical structure]]]
== Synonyms and Related Terms ==
urethan; ethyl carbamate; ethyl urethane; carbamic acid ethyl ester
== Risks ==
* Combustible. Flash point = 92 C 
* Toxic by ingestion. 
* Possible carcinogen and teratogen. 
* Fisher Scientific: SDS
==Physical and Chemical Properties==
Soluble in water, ethanol, ether, glycerol, chloroform. Slightly soluble in olive oil.
Composition 	CO(NH2)OC2H5
CAS 	51-79-6
Melting Point 	48-50 C
Density 	0.9862 g/ml
Molecular Weight	mol. wt = 89.09
Boiling Point 	180-184 C
==Resources and Citations==
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 10013
Category:Materials database
Uric acid

== Description ==
The nitrogen containing compound found in excrement from reptiles and birds. Uric acid was discovered by the Swedish scientist, Carl Scheele in 1777, when he extracted it from Peruvian guano. He later reacted it with nitric acid to for purpuric acid, a red colorant that was the precursor to murexide.
== Synonyms and Related Terms ==
purpuric acid
== Sources Checked for Data in Record ==
* Encyclopedia Britannica, http://www.britannica.com Comment: "Uric Acid." Encyclopædia Britannica. 7 Sept. 2004 .
Category:Materials database