nyuuzyou/wikis huggingface dataset:
Persian berries

== Description ==
Persian berries, also called buckthorn berries, are small berries from any shrub of the buckthorn family, such as Rhamnus infectorius, R. amygdalinus, R.oleodies, or R.alaternus. Buckthorn plants are native to the near East and have been cultivated in Europe since Roman times. A water-soluble dye was extracted from the berries for use in textiles, wood stains and lake pigments. The unripe berries produce a yellow juice or sap that is used for dyeing cloth and for making a yellow pigment called sap green. The ripe berries were used to make Dutch pink, a yellow lake. The principle colorant, rhamnetin, is extracted from the dried berries by boiling water. Some plants also contain other colorants such as kaempferol (R.cartharticus), quercetin, xanthorhamnin, and emodin. Sap green lake is made with alum and can vary in color from yellow to green. On wool, Persian berries produce a golden color when mordanted with chrome and a dull yellow color with an aluminum mordant. A fugitive yellow color prepared on alumina trihydratewas widely used in house paints in England in the 18th century.
== Synonyms and Related Terms ==
Natural Yellow 13; buckthorn berries; dyer's buckthorn; bayas persas (Esp.); graine d' Avignon (Fr.); nerprun des teinturiers (Fr.); giallo di spincervino (It.); giallo d'avignone (It.); Gelbbeere (Deut.); Spincervino (It.); Espino cerval (Esp.); persische bessen (Ned.); bagas de Avignon (Port.); French berries; Persian berry lake; yellow berries; sap green; Avignon berries; Dutch pink; Dutch yellow; rhamnetin; kaempferol; kampherol; Rhamnus infectorius, Rhamnus amygdalinus, Rhamnus oleodies, or Rhamnus alaternus
[[[SliderGallery rightalign|Persian berries 276.TIF~FTIR (MFA)]]]
==Physical and Chemical Properties==
* Rhamnetin is soluble in sulfuric acid giving a greenish blue fluorescence. 
* Slightly soluble in ethanol, acetic acid. Soluble in alkalis forming a brown solution. 
* Decomposes in strong acids.
==Resources and Citations==
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
* Helmut Schweppe, Schweppe color collection index and information book
* Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
* R. Newman, E. Farrell, 'House Paint Pigments', Paint in America , R. Moss ed., Preservation Press, New York City, 1994
* Thomas B. Brill, Light Its Interaction with Art and Antiquities, Plenum Press, New York City, 1980
* F. Crace-Calvert, Dyeing and Calico Printing, Palmer & Howe, London, 1876
* Colour Index International online at www.colour-index.org
* Judith Hofenk-de Graaff, Natural Dyestuffs: Origin, Chemical Constitution, Identification, Central Research Laboratory for Objects of Art and Science, Amsterdam, 1969
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Persian berries LC

== Description ==
Persian berries
== Synonyms and Related Terms ==
== Summary of results ==
== Sample preparation ==
Persian berry sample (~0.1g) from Iran was extracted with 1 mL methanol:H2O (v:v=1:1). Then the upper 30 μl of solution was removed for HPLC-DAD-MS analysis (20 μl was injected).
== Analytical instrumentation and procedures ==
HPLC-DAD-MS analysis was performed with an Agilent 1100 liquid chromatography system consisting of an automatic injector, a gradient pump, a HP series 1100 DAD, and an Agilent series 1100 VL on-line atmospheric pressure ionization electrospray ionization mass spectrometer. Separations were done on a Vydac 214TP52 analytical column (2.1 mm diameterX250 mm; 5-ím particle size). The column was eluted at a
flow rate of 0.2 mL/min with a tertiary gradient of water (A),acetonitrile (B), and 1% (v/v) aqueous formic acid (C) with the following elution program: 0 min, 90% A, 5% B, 5% C; 0-55 min, a linear gradient to 35% A, 60% B, 5% C; 55-60 min, a linear gradient elution to 15% A, 80% B, 5% C; 60-62 min, isocratic elution at 15% A, 80% B, 5% C; 62-70 min gradient elution to 90% A, 5% B, 5% C; and reequilibration with the latter solvent for 15 min. The mass spectrometer was run both in the negative and positive ion mode.
== Chromatograms ==
HPLC-DAD
center|frame|Extract of Persian berries in Methanol:water=1:1(v:v), By Xian Zhang Absorbance at 350nm (mAU)
== Result ==
center|frame|compounds identified
== Identified compounds ==
[[[|Rutin.JPG~Rutin UV-Vis|isoUV.jpg~Quercetin UV-Vis]]]
Compound 	RT (min.)	MW 	UV/vis 	Other
rutin 	27.0 	610	278,352 	Comments here
quercetin 	34.6 	302	280,395,370	
kaempferol 	39.0 	286	280,395,368	
isorhamnetin	39.0 	316	280,395,368	
== References ==
* Zhang, X., and Laursen, R. A., Development of Mild Extraction Methods for the Analysis of Natural Dyes in Textiles of Historical Interest Using LC-Diode Array Detector-MS. Analytical Chemistry 77, 2022-2025 (2005).
* Zhang, X., Corrigan, K., MacLaren, B., Leveque, M., and Laursen, R. A., Characterization of Yellow Dyes in Nineteenth Century Chinese Textiles. Studies in Conservation 52, 211-220 (2007).
Category:Dye Analysis
Category:Reference Materials
Category:Natural Dyes
Persian goat hair

== Description ==
A soft fiber obtained from Persian mountain goats (Cook 1984). Persian goat hair has a soft silky feel like cashmere but the fibers are coarser.
== Synonyms and Related Terms ==
Persian cashmere
==Physical and Chemical Properties==
Diameter = 20 micrometers
==Resources and Citations==
* G.Cook, Handbook of Textile Fibres:I. Natural Fibres, 5th edition, Merrow Publishing Co., Durham, England, 1984.
Category:Materials database
Persimmon

== Description ==
Any of several small deciduous trees (genus Diospyros) having orange to red color edible fruits. Various types of persimmons are found throughout the temperate regions of the world. The trees produces a dense, close-grain wood that is similar to ebony. It is used for shuttles, bobbins, golf club heads, and billiard cues.
== Synonyms and Related Terms ==
kaki (Diospyros kaki: native to China); sharon fruit; Oriental persimmon; black sapote (Diospyros digyna; native to central America), mabolo (Diospyros discolor; native to the Philipppines); velvet apple; date-plum (Diospyros lotus; native to southeast Europe and southwest Asia); Texas persimmon (Diospyros texana); American persimmon (Diospyros virginiana); native to eastern North America); kaki (Jap., Deut., Fr.); caqui (Esp., Port.); persimonio (Esp.); zapote (Esp.); plaqueminier (Fr.); caco (It.);
==Physical and Chemical Properties==
* Tree height to 10 m. 
* Fruit = 3-8 cm in diameter. 
* Heartwood is black or dark brown. 
* Sapwood is pale in color.
==Resources and Citations==
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* Encyclopedia Britannica, http://www.britannica.com Comment: "persimmon" [Accessed 25 Jan. 2006].
* Museum of Japanese Traditional Art Crafts at http://www.nihon-kogeikai.com/ (Jap. term)
* Wikipedia: http://en.wikipedia.org/wiki/Persimmon [Accessed 25 Jan. 2006].
Category:Materials database
Perspex

== Description ==
[ICI, England] A trademark for transparent acrylic sheeting made from polymethyl methacrylate. The equivalent U.S. material is sold as Plexiglas®.
== Physical and Chemical Properties ==
* Can be electrostatic. 
* More easily scratched than glass.
== Resources and Citations ==
* 3A Composites: Perspex 
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 11
* Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
* Marie Svoboda, Conservation Survey Index, unpublished, 1997
* Wikipedia: http://en.wikipedia.org/wiki/Perspex (Accessed Nov. 9, 2005)
Category:Materials databaseCategory:MWGCategory: Board/Panel, PlasticCategory:Glazing
Peru balsam

== Description ==
A dark brown oleoresin obtained from Myroxylon pereirae trees that are native to the coastlines of Central America. Peru balsam contains high amounts of cinnamic acid, benzoic acid and vanillin. It is used for perfumes and flavorings. Peru balsam has also been used as a dark brown glaze for paintings. Peru balsam is very similar to Tolu balsam.
[[[SliderGallery rightalign|Myroxylon balsamum, Balsam of Tolu, Kew 58028.TIF~FTIR(MFA)]]]
== Synonyms and Related Terms ==
Myroxylon pereirae; bálsamo de Perú (Esp.); baume du Pérou (Fr.); balsamo del Perù (It); Peruvian balsam; Indian balsam; Chinal oil; Black balsam; Honduras balsam; Surinam balsam
==Risks ==
Skin contact may cause some allergies.
==Physical and Chemical Properties==
Soluble in ethanol, chloroform, ether, glacial acetic acid. Insoluble in water.
Density 	1.150-1.170 g/ml
Refractive Index	1.593
==Resources and Citations==
* R.White "Brown and Black Organic Glazes, Pigments and Paints" National Gallery Technical Bulletin, 10:58-71, 1986.
* 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 977
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
* CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index=1.593
Category:Materials database
Perylene dye

== Description ==
A polycyclic aromatic hydrocarbon with the chemical formula C 20 H 12, occurring as a brown solid With its discovery in 1912, a small group of red and violet synthetic organic vat dyes were developed. Perylene dyes has been laked as artist pigments since 1957 producing watercolor paints with good to excellent lightfastness. Perylene colors have also been used in automobile paints. In recent years, several perylene derivatives have been used as photoconducting compounds in optical LEDs and as a dye in spectroscopic studies. It and its derivatives may be carcinogenic, and are considered to be hazardous pollutants.
[[[SliderGallery rightalign|PV029 sun perylene violet 229-9029.TIF~FTIR PV029(MFA)|PR0179 sun perylene maroon 229-1179.TIF~FTIR PR179(MFA)|Perylenevt.jpg~Chemical structure]]]
== Synonyms and Related Terms ==
perilene
== Comparisons ==
Pigment number	Manufacture	Pigment name 	Manufacture CI number	Comments
PV029 	Sun 	perylene violet	229-9029 	
PR179 	Sun 	perylene maroon	229-1179 	
==Physical and Chemical Properties==
Soluble in water
==Resources and Citations==
* Website: www.handprint.com (accessed April 2004)
* Wikipedia: http://en.wikipedia.org/wiki/Perylene (Accessed Mar. 1, 2006)
Category:Materials database
Pest

== Description ==
Any unwanted insects or animal, such as birds, bats, rodents that causes damage or makes itself a nuisance. Pest damage can include material loss (holes, tunnels, chewed wires, etc), and fouling (flyspecks, guano, etc.) or human injury/illness. Integrated Pest Management programs are instituted to minimize damage by pests. These methods primary modify the habitats to minize food sources and protect sensitive items. Additionally, pest infestations can be treated with traps, freezing, heating, and anoxic environments. 
Chemical pesticides have been used since the 18th century to destroy pests. As many pesticides are also toxic to humans and leave residues, their use has diminished.
==Resources and Citations==
* MuseumPest.net at Link
* Encyclopedia Britannica, http://www.britannica.com Comment: "pest." Accessed 15 Feb. 2005.
* David Pinniger, Pest Management in Museums, Archives and Historic Houses, Archetype Publications, London, 2001
* Wikipedia: Pest (organism)
Category:Materials database
Pest damage

== Description ==
Damage to wood, fabric, or other materials caused by insects and pests, such as birds, bats, rodents. Pest damage can include material loss (holes, tunnels, chewed wires, etc), fouling (flyspecks, guano, etc.). Integrated Pest Management programs are instituted to minimize damage by pests.
== Additional Images ==
File:Blk.Carpenter_ant_frass_forestryimages.org.jpg|Damage from carpenter ants
File:Blk.Carpenter_ant_larvae_forestryimages.org.jpg|Carpenter ant
File:Drugstore_Beetle_frass_forestryimages.org.jpg|Damage from drugstore beetles
File:Formosan_termite_damage_forestryimages.org.jpg|Damage from termites
File:Furniture.beetle_damage2_forestryimages.org.jpg|Damage from furniture beetles
File:Furniture.beetle_damage3_forestryimages.org.jpg|Damage from furniture beetles
File:Old.House.borer_damage_forestryimages.org.jpg|Damage from old house borer
== Resources and Citations ==
* MuseumPest.net at Link
* David Pinniger, Pest Management in Museums, Archives and Historic Houses, Archetype Publications, London, 2001
Category:Materials database
Pesticide

== Description ==
Any substance used to destroy or control pests. Nearly all pesticides are toxic to humana. A natural pesticide made from ground tobacco plants was first used in the 1763 century to kill aphids. Examples of other natural organic pesticides include nicotine, rotenone, petroleum, kerosene, Creosote, and Turpentine. Early inorganic pesticides also introduced in the 18th century include Paris green, Bordeaux mixture, hydrogen cyanide as well as less commonly used compounds containing arsenic, copper, fluorine and sulfur.. The first synthetic pesticide, DDT was developed in 1939 in Switzerland. After World War II, synthetic products proliferated including diazinon, aldrin, dieldrin, chlordane, lindane, parathion, along with numerous fumigants. By the 1960s, the devastating effects of widespread usage have prompted the regulation of the most hazardous pesticides. As such, currently used chemicals break down rapidly leaving little to no residues and include some natural compounds such as pyrethrum and neem oil. Additionally, insect growth regulators (e.g., methoprene, hydroprene, and fenoxycarb) and sex pheromones are being used with minimal human toxicity. 
Traditional Mothballs containing naphthalene have been replaced by other volatile repellents such as 1,4-dichlorobenzene. Moth larvae can also be killed with insecticides like permethrin or pyrethroids.
See also attractant, fumigant, insecticide, and biocide
== Synonyms and Related Terms ==
pesticides (pl.); pest control agent; attractant; fumigant; insecticide; biocide; rodenticide
== Additional Images ==
File:Insecticides_helicopter_forestryimages.org.jpg|Insecticide
File:Insecticides_hemlock_forestryimages.org.jpg|Insecticide
File:Insecticides_nozzles_forestryimages.org.jpg|Insecticide
==Resources and Citations==
* MuseumPest.net at Link
* Wikipedia: Insecticide
* Wikipedia: Pest (organism)
* Nancy Odegaard, Alyce Sadongei, and associates, Old Poisons, New Problems, Altimira, Walnut Creek, CA, 2005
* Lynda A. Zycherman, J.Richard Schrock, A Guide to Museum Pest Control, FAIC and Association of Systematics Collections, Washington DC, 1988
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* Encyclopedia Britannica, http://www.britannica.com Comment: "Pesticide." Accessed 7 Sept. 200 .
Category:Materials database
Petalite

== Description ==
A mineral with white foliated crystals resembling petals. Petalite is composed of lithium aluminum silicate. It is found in the United States (Massachusetts, Maine), Sweden and on the island of Elba. Petalite is used as a high melting point flux in ceramic glazes and glass. Additionally, a mixture of 60% petalite and 40% plastic clay will produce a ceramic with very low thermal expansion.
== Synonyms and Related Terms ==
lithium feldspar; petalita (Esp.); Pethalit (Deut.)
== Risks ==
* Alkaline. 
* Skin contact may causes irritation or burns.
== Physical and Chemical Properties ==
* Luster = vitreous. 
* Streak = white. 
* May be transparent or translucent
Composition 	LiAl(Si2O5)2
CAS 	1302-66-5
Mohs Hardness	6.0 - 6.5
Density 	2.39-2.46 g/ml
Category:Materials database
Petrified wood

== Description ==
A fossil in which wood cells are replaced with crystallized minerals. Petrified wood is formed when dissolved minerals such as silica (silicon dioxide, SiO2) or calcite (calcium carbonate, CaCO3) penetrate and deposit within the wood cells. The petrification process, which can also occur in bones, eventually replaces the original material with minerals. Fossilized wood retains accurate textural details of the internal structure as well as the external shape of the original piece. In the western U.S., the petrified forests are composed of silicified wood in which the wood has been replaced by chalcedony. Petrified wood is also found in the Petrified Forest National Monument in Santa Cruz, Argentina as well as on the island of Lesbos, in Greece.
== Synonyms and Related Terms ==
silicified wood; fossilized wood; bois fossilisé (Fr.); bois pétrifié (Fr.); madeira petreficada (Port.); legno pietrificato (It.)
==Physical and Chemical Properties==
Mohs Hardness	7.0
==Resources and Citations==
* Encyclopedia Britannica, http://www.britannica.com Comment: "petrified wood" [Accessed March 1, 2002].
* 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/Petrified_wood (Accessed Nov. 9, 2005)
Category:Materials database
Petrolatum

== Description ==
A soft, water white, gelled solid. Petrolatum is a low molecular weight hydrocarbon wax that contains both mineral jelly and small amounts of mineral oil. It is chemically inert, like paraffin. Petrolatum is used as an ointment, lubricant, water-repellent, release agent and temporary adhesive. It is not recommended for contact with any art object.
== Synonyms and Related Terms ==
petroleum jelly (AAT preferred); mineral jelly; petrolato (Esp.); 
Examples include: Vaseline® 
==Physical and Chemical Properties==
Melting Point	41-63 C
Density 	0.815-0.865 g/ml
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 594
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* John S. Mills, Raymond White, The Organic Chemistry of Museum Objects, Butterworth Heineman, London, 2nd ed., 1994
* A History of Technology, Charles Singer, E.J. Holmyard, A.R. Hall (eds.), Clarendon Press, Oxford, Volume 1: From Early times to Fall of Ancient Empires, 1954
* 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 Comment: petroleum jelly (preferred)
Category:Materials database
Petrolatum, liquid

== Description ==
A colorless, aliphatic hydrocarbon oil obtained from petroleum distilled at 330-360C. Liquid petrolatum, or mineral oil, is normally divided into two fractions: light mineral oil (density 0.83-0.88) and heavy mineral oil (density 0.86-0.91). Mineral oil is used as a lubricants for textile processing. It has also been used to remove bloom on varnished oil paintings (Mayer 1969).
== Synonyms and Related Terms ==
liquid paraffin; mineral oil; white Russian oil; petrolato líquido (Esp.)
== Physical and Chemical Properties ==
Soluble in ether, chloroform, carbon disulfide, naphtha, benzene. Insoluble in water, cold ethanol or glycerol.
==Resources and Citations==
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* 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
Category:Materials database
Petroleum

== Description ==
A viscous yellow to black complex mixture of hydrocarbons that occurs naturally beneath the earth's surface. Petroleum is refined (i.e.,separated by distillation) into useable fractions (see petroleum distillate). Major reserves of oil are being tapped in the Middle East, North Africa, United States, Canada, Russia, Venezuela, Mexico and Australia. The products obtained from petroleum are used to make fuel, building supplies, solvents, plastics, elastomers, and pharmaceuticals.
== Synonyms and Related Terms ==
crude oil; petróleo (Esp.); pétrole (Fr.); petrolio (It)
== Risks ==
Flammable
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 594
* 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
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Reed Kay, The Painter's Guide To Studio Methods and Materials, Prentice-Hall, Inc., Englewood Cliffs, NJ, 1983
* Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
* Kurt Wehlte, The Materials and Techniques of Painting, Van Nostrand Reinhold Co., New York, 1975
Category:Materials database
Petroleum distillate

== Description ==
A liquid mixture of light hydrocarbons obtained from crude petroleum. Gasoline, or naphtha, is the distillation fraction of petroleum that boils between 35-204C (100-400F). Kerosene is the heavier liquid fraction obtained in the boiling range of 204-343C. Mineral oil is collected from 330-360C. Additional fractions are often distilled from gasoline and have over the years been given many confusing and overlapping names: 
- fraction (boiling range) = alternate names
* volatiles (<40C) = propane, butane, LPG (liquefied petroleum gas), petroleum ether
* naphtha, light (35-60C) = petroleum ether, benzine, ligroin, petroleum spirits
* hydrocarbon solvents (60-100C) = benzene, toluene, hexanes, octane, petroleum solvent
* Ligroin (90-150 C) = benzine, petroleum spirits, VM&P naphtha, heavy naphtha
* Mineral spirits (150-200C) = paint thinner, white spirits, petroleum spirits, Stoddard solvent
* Mineral wax = paraffin, microcrystalline wax, petrolatum 
== Risks ==
* Highly flammable. 
* Toxic by ingestion and inhalation
==Resources and Citations==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
* Reed Kay, The Painter's Guide To Studio Methods and Materials, Prentice-Hall, Inc., Englewood Cliffs, NJ, 1983
* Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
* George Savage, Art and Antique Restorer's Handbook, Rockliff Publishing Corp, London, 1954
Category:Materials database
Petroleum ether

== Description ==
A low-molecular weight petroleum distillate that is used as a solvent. Petroleum ether is the distillation fraction of gasoline that boils between 35-80C. It evaporates quickly and is highly flammable. Petroleum ether is used as as a solvent, degreaser and cleaning fluid. It evaporates too fast to be an effective paint thinner. The name, petroleum ether, gives incorrect implications since the solvent is composed of aliphatic hydrocarbons and is not chemically an ether. Thus, the name light naphtha and ligroin have both been used as replacements.
== Synonyms and Related Terms ==
petroleum spirits, petroleum benzin; lactol spirits; casinghead gasoline; light naphtha; ligroin; petroleum naphtha
Category:Materials database
Petroleum wax

== Description ==
A high molecular hydrocarbon wax derived from petroleum. Examples are paraffin, microcrystalline wax, and petrolatum. See mineral wax.
== Synonyms and Related Terms ==
cera derivada del petróleo (Esp.); cera minerale (It)
==Resources and Citations==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
Category:Materials database