nyuuzyou/wikis huggingface dataset:
Oilcloth

== Description ==
A fabric, usually cotton, coated or impregnated with a pigmented drying oil, usually linseed oil, to make it waterproof. Oilcloth coatings were available in numerous colors and printed designs. It was commonly used for drop cloths, table covers, floor covers, waterproof clothing, umbrellas, and shelf linings. In the second half of the 20th century, oilcloths were replaced by less expensive plastic coated fabrics.
== Synonyms and Related Terms ==
oil cloth; oil-cloth; toile cirée (Fr.); hule (Esp.)
==Resources and Citations==
* Hoechst Celanese Corporation, Dictionary of Fiber & Textile Technology (older version called Man-made Fiber and Textile Dictionary, 1965), Hoechst Celanese Corporation, Charlotte NC, 1990
* Rosalie Rosso King, Textile Identification, Conservation, and Preservation, Noyes Publications, Park Ridge, NJ, 1985
* John S. Mills, Raymond White, The Organic Chemistry of Museum Objects, Butterworth Heineman, London, 2nd ed., 1994
* 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. 558
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Oiled charcoal

== Description ==
Pressed charcoal sticks that have been soaked in linseed or olive oil. Oiled charcoal has been identified in 16th century Renaissance drawings (Stratis 1999). The sticks produce a deep black line in which the oil permanently adheres the charcoal to the paper. However, the oil can migrate into the paper usually producing a halo around the line that can darken with age. In some papers, the oil can also be seen on the verso.
== Synonyms and Related Terms ==
Fettkohle (Deut.)
==Resources and Citations==
* H.Stratis, "Oiled Charcoal" in Media and Techniques of Works of Art on Paper, New York University Conservation Center of the Institute of Fine Arts, New York, 1999.
Category:Materials database
Oiled silk

== Description ==
A thin, silk fabric that has been impregnated with a drying oil. The oil dries producing a semitransparent, waterproof fabric that is very pliable. Oiled silk has been replaced in recent years with less expensive plastic coated fabrics.
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 558
* Rosalie Rosso King, Textile Identification, Conservation, and Preservation, Noyes Publications, Park Ridge, NJ, 1985
Category:Materials database
Oilskin

== Description ==
A fabric that has been impregnated with a drying oil to make a waterproof cloth. Oilskin was usually made from cotton or canvas fabrics. It was used for covering for cargo and to make slicker type raincoats. Oilskin has been replaced in recent years with less expensive plastic coated fabrics.
== Synonyms and Related Terms ==
Friesennerz (Deut.)
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971
* Wikipedia: http://en.wikipedia.org/wiki/Oilskin (Accessed Feb. 2, 2006)
* 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
Oilstone

== Description ==
A fine-graind whetstone that is treated with mineral oil and used for sharpening cutting tools. The oil provides lubrication while the stone abrades the metal. High quality, pure chalcedony is preferred as oilstone. Natural oilstones are obtained from Turkey and Arkansas. A synthetic aluminum oxide oilstone, called India oilstone, is also available.
== Synonyms and Related Terms ==
white Arkansas stone (novaculite); India oilstone
== Comparisons ==
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 559
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* George Savage, Art and Antique Restorer's Handbook, Rockliff Publishing Corp, London, 1954
* 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
Oiticica oil

== Description ==
A light yellow drying oil obtained from the seeds of the Brazilian oiticica tree, Licania rigida. Oiticica oil is used in industrial oil paints and varnishes as a substitute for tung oil. Its composition is reported as: total saturated fatty acids (11.3%); oleic acid (6.2%), licanic acid (82.5%). Oitica oil has higher gloss than tung oil but less wear resistance.
== Synonyms and Related Terms ==
"Licania rigida; huile d'oïticica (Fr.); aceite de oiticica (Esp.)
== Physical and Chemical Properties ==
* Iodine value = 140-180
* Density = 0.974
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 559
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Guy Weismantel, Paint Handbook, McGraw-Hill Book Company, New York, 1981
* CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: density=0.974, iodine value=140-180; saturated fatty acids (11.3%); oleic acid (6.2%), licanic acid (82.5%)
* 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
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Oklahoma granite

== Description ==
A dark red to light pink granite quarried in the southwestern regions of Oklahoma (Lent 1925). Oklahoma granite ranges from a moderate to fine grain and was used for buildings and monuments.
==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
Old house borer

== Description ==
An insect from the Coleoptera order of the species Hylotrupes bajulus (L.) that is native to the Atlas Mountains. The old house borer is now found throughout the world and is a common household pest in Europe. The larvae feed on seasoned softwoods such as found in structural timbers. Adult old house borers typically emerge in June and July. Once they mate, the female lays eggs in any available cracks and crevices in wood. The larvae emerge in approximately 9 days and bore into the wood for food. The larvae stage lasts for up to 2 years during which time severe structural damage can occur.
== Synonyms and Related Terms ==
Hylotrupes bajulus; house longhorn borer;
== Additional Images ==
File:Old.House.borer_damage_forestryimages.org.jpg|Damage from old house borer
File:5006032_Old.house.borer_drawing.jpg|Old house borer
File:5315097_Old.house.borer_adults.jpg|Old house borer
==Resources and Citations==
* MuseumPest.net at Link
* Lynda A. Zycherman, J.Richard Schrock, A Guide to Museum Pest Control, FAIC and Association of Systematics Collections, Washington DC, 1988
Category:Materials database
Olefin

== Description ==
A class of aliphatic hydrocarbons that are saturated except for one carbon-carbon double bonds. Also called alkenes, olefins will self-polymerize to form long-chain polymers (polyethylene, polypropylene, etc.) that are often manufactured as fibers.
== Synonyms and Related Terms ==
alkenes
== Physical and Chemical Properties ==
Composition	CnH2n
Category:Materials database
Olefin fiber

== Description ==
A manufactured fiber in which the fiber-forming substance is any long chain synthetic polymer composed of at least 85% by weight of ethylene, propylene or other olefin units, except amorphous (noncrystalline) polyolefins qualifying as a rubber fiber (Federal Trade Commission definition). The process for making polyethylene fibers was developed in Germany by Karl Ziegler in 1954. In 1957, Giulio Natta (Montecatini, Italy) produced polypropylene fibers. Olefin fibers are lightweight, smooth and white with a slightly waxy feel. They are resistant to wear, creases, acids, alkalis, moisture, fungi and insects. Olefin fibers slowly degrade in sunlight and can be stained by oils. Olefin fibers are used to make protective clothing, carpeting, artificial grass, upholstery fabrics, and stay-dry clothing. 
See polyethylene, and polypropylene.
== Synonyms and Related Terms ==
olefin fibre; Olefane; Dynafilm [U.S. Industrial Chemical]; Tenite [Eastman Chemical]; Merkalon; Prolene [Industrial Rayon]; Gerfil [G.F.Chemical]; Herculon®; Tyvek® [DuPont]; Typar; Durel®; Marvess®; Polycrest®
== Risks ==
* Shrinks at 75C (polyethylene), 120C (polypropylene). 
* Burns with a heavy, sooty, waxy smoke.
== Physical and Chemical Properties ==
* Soluble in perchloroethylene (do not dry-clean). 
* Resistant to strong acids and alkalis. 
* Cross sections = circular or elliptical. 
* Tenacity = 1.5-8.0 g/denier
* Moisture regain = 0.1%
* Elongation = 20-80%
* Density = 0.90-0.96 gm/cc
== Comparisons ==
== Resources and Citations ==
* Hoechst Celanese Corporation, Dictionary of Fiber & Textile Technology (older version called Man-made Fiber and Textile Dictionary, 1965), Hoechst Celanese Corporation, Charlotte NC, 1990
* Rosalie Rosso King, Textile Identification, Conservation, and Preservation, Noyes Publications, Park Ridge, NJ, 1985
* Marjory L. Joseph, Introductory Textile Science, Holt, Rinehart and Winston, Fort Worth, TX, 1986
* Fairchild's Dictionary of Textiles, Phyllis G.Tortora, Robert S. Merkel (eds.), Fairchild Publications, New York City, 7th edition, 1996
* J.Gordon Cook, Handbook of Textile Fibres:II Man-made Fibres, Merrow Publishing Co. , Durham, England
* Website address 1 Comment: Fibersource.com
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p.636
Category:Materials database
Oleic acid

== Description ==
A clear, oily, mono-unsaturated fatty acid that occurs naturally in almost all animal and vegetable fats and oils. As the glyceride, oleic acid is a basic foodstuff. Oleic acid darkens on exposure to light and turns rancid on exposure to air. It can be hydrogenated to form stearic acid or saponified with alkalis, such as potassium hydroxide, or triethanolamine, to make soaps. Oleic acid is also used to make Turkey red oil, to waterproof textiles, to oil wool, and in the manufacture of polishing compounds.
[[[SliderGallery rightalign|aaiOLEICACID.jpg~FTIR|oleic acid.jpg~Chemical structure]]]
== Synonyms and Related Terms ==
cis-9-octadecenoic acid; red oil; elaine oil; octadecenoic acid; rapic acid; oleinic acid
== Risks ==
* Combustible. Flash point = 189 C 
* IntegraChem: SDS
== Physical and Chemical Properties ==
* Soluble in ethanol, ether and most organic solvents. Insoluble in water. 
* Iodine no. = 89.9 
* Acid number = 198.6
Composition 	CH3(CH2)7CH:CH(CH2)7COOH
CAS 	112-80-1
Melting Point 	4 C
Density 	0.895 g/ml
Molecular Weight	mol. wt. = 282.5
Refractive Index	1.4599
Boiling Point 	286 C
==Resources and Citations==
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 560
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 6965; RI = 1.4585
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
Category:Materials database
Oleoresin

== Description ==
A tree exudation that contains a mixture of resins and essential oils. Most oleoresins are soft and sticky at room temperature. Examples are elemi and turpentine.
== Synonyms and Related Terms ==
oleorresina (Esp.); oleo-resin 
==Resources and Citations==
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 663
* 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
* 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
Oleum

== Description ==
Name for fuming sulfuric acid commonly used prior to the 1800s when chemical compound names were standardized (Schur 1985).
== Synonyms and Related Terms ==
fuming sulfuric acid; pyrosulfuric acid
==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
* 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.730
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
Category:Materials database
Olibanum

== Description ==
A natural, triterpenoid gum-resin obtained from the Boswellia caterii trees native to Africa and Arabia. Olibanum, or frankincense, contains 3-8% volatiles oils (pinene, dipentene), 60% resins (mostly triterpenoids), 20% gums, and 6-8% bassorin. Olibanum comes in hard yellow grains. It is used in incense and perfumes.
[[[SliderGallery rightalign|MFA- Frankincense.jpg~FTIR]]]
== Synonyms and Related Terms ==
Boswellia caterii; frankincense; olíbano (Esp.); Incenso di Somalia (It)
==Resources and Citations==
* 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. 589
* 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 6969
* Ancient Egyptian Materials and Technologies, Paul Nicholson, Ian Shaw (eds.), Cambridge University Press, Cambridge, 2000 Comment: M.Serpico, R.White, "Resins, Amber and Bitumen
Category:Materials database
Olive

== Description ==
A small, evergreen tree, Olea europaea, native to the Mediterranean region. The small tree is grown commercially for its fruits and oil. The dense, durable wood of the olive tree is yellowish to light brown with a greenish tinge and a straight, close grain. Some older trees produce wood with decorative figuring. Olive wood polishes to a smooth glossy surface. It is used for furniture, inlay, carving, turnery, and small decorative items.
== Synonyms and Related Terms ==
Olea europaea; Olivenbaum (Deut.); Echter Ölbaum (Deut.); olivo (Esp., It.); olivier (Fr.); olijfboom(Ned.); oliventre (Nor.); oliwka (Pol.); oliveira (Port.); olivträd (Sven.); olive-wood; olive wood; olivewood
== Physical and Chemical Properties ==
* Shrub or small tree to 8 m high. 
* Bark=light gray-brown; smooth aging to gnarled and bumpy. 
* Leaves=simple, opposite, oblong, pointed (4-10 cm long). 
* Fruit=oblong green drupe up to 3 cm turning purple or black when ripe in winter.
* Density = 50-60 ppcf
== Additional Images ==
File:Olive-tree-F5.jpg|Olive tree Olea europaea
File:Tafelneuolive4f5.jpg|Olive tree Olea europaea
File:olivewg.jpg|Olivewood (Olea europaea)
==Resources and Citations==
* F. H. Titmuss, Commercial Timbers of the World, The Technical Press Ltd., London, 1965
* Virginia Tech Dendrology website at www.fw.vt.edu/dendro/dendrology/main.htm (Accessed Dec. 9, 2005)
* R.Gale, P.Gasson, N.Hepper, G.Killen, "Wood" , Ancient Egyptian Materials and Technology, Cambridge University Press, Cambridge, p. 334-371., 2000
* Wikipedia: Olive (Accessed Dec. 9, 2005 and October 2024)
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 593, 560
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: Entry 6973
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* George Savage, Art and Antique Restorer's Handbook, Rockliff Publishing Corp, London, 1954
Category:Materials database
Olive oil

== Description ==
A pale, greenish-yellow nondrying oil expressed from the fruit of the olive tree, Olea europaea. Olive oil contains glycerides of oleic acid (56-83%), palmitic acid (8-18%), linoleic acid (4-19%), stearic acid (2-5%), linolenic acid (0.3-1%) and arachidic acid (0.9%) with small amounts of squalene, phytosterol, and tocopherol (Serpico and White 2000). Olive oil has a delicate flavoring and is primary used for cooking. It becomes rancid on exposure to air and turns cloudy at cold temperatures. Olive oil has been used to dress leather. It is also used in the manufacture of castile soap, and textile lubricants.
== Synonyms and Related Terms ==
Olea europaea; huile d'olive (Fr.); aceite de oliva (Esp.); olio di oliva (It)
[[[SliderGallery rightalign|aaiOLIVEOIL.jpg~FTIR]]]
== Risks ==
* Combustible. Flash point = 225 C. 
* Contact may cause irritation. 
* Fisher Scientific: MSDS
== Physical and Chemical Properties ==
* Saponification value = 187-196
* Iodine value = 79-90; 
* Soluble in ether, chloroform and carbon disulfide.
CAS 	8001-25-0
Melting Point 	-6.0 C
Density 	0.910-.918 g/ml
Refractive Index	1.466-1.468
==Resources and Citations==
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 6973
* 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
* A.Lucas, J.R.Harris, Ancient Egyptian Materials and Industries, Edward Arnold Publishers Ltd., London, 4th edition, 1962
* Ancient Egyptian Materials and Technologies, Paul Nicholson, Ian Shaw (eds.), Cambridge University Press, Cambridge, 2000 Comment: M.Serpico, R.White, "Oil, fat and wax"
* 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: melting point = -6.0, density=0.918, ref. index = 1.4679, iodine value=81.1, saponification value = 189.7
Category:Materials database
Olivine

== Description ==
An olive green color magnesium iron silicate mineral. Olivine occurs in igneous and metamorphic rocks and has two compositional varieties: fayalite (iron rich) and forsterite (magnesium rich). Olivine beads have been found in pre-Dynastic Egyptian jewelry. The opaque stone was found in Egypt, in the lava of Vesuvius and in the Eifel district of Germany. Transparent, gem quality stones, called peridot, come from Zabargad (St. John's Island in the Red Sea) and from Minas Gerais (Brazil), South Africa, Myanmar (formerly Burma), Norway, British Columbia, and the U.S.(Arizona, Hawaii).
== Synonyms and Related Terms ==
chrysolite; peridot (yellow-green); fayalite (Fe2SiO4); forsterite (Mg2SiO4); Olivin (Deut.); olivino (Esp.); peridoto (Esp.); olivine (Fr.); olivijn (Ned.); oliwin (Pol.); olivina (Port.)
[[[SliderGallery rightalign|Fayalite, Upper Bear Creek CO.PNG~FTIR (MFA)|Forsterite IR-ATR RRUFF R040018.png~IR-ATR (RRUFF)|Forsterite Raman RRUFF R040018.png~Raman (RRUFF)|forsteriteRS.jpg~Raman (RASMIN)]]]
==Physical and Chemical Properties==
* Orthorhombic crystal system with massive or granular forms 
* Fracture = uneven to conchoidal 
* Luster = vitreous 
* Streak = colorless 
* Transparent to translucent
* Fluorescence = none
* Pleochroism = weak yellow-green and green (noticeable only in dark stones)
Composition 	(Mg,Fe)2SiO4
CAS 	1317-71-1
Mohs Hardness 	6.5 - 7.0
Density 	3.27-3.37 g/ml
Refractive Index	1.64 - 1.70
Birefringence 	0.035 - 0.040
== Comparisons ==
==Resources and Citations==
* B.Aston, J.Harrell, I.Shaw, "Stone" in Ancient Egyptian Materials and Technology, P.Nicholson, I.Shaw (eds.), Cambridge University Press, 2000, p. 47-48.
* Gem Identification Lab Manual, Gemological Institute of America, 2016.
* Mineralogy Database: Olivine
* Jack Odgen, Jewellery of the Ancient World, Rizzoli International Publications Inc., New York City, 1982
* R.F.Symmes, T.T.Harding, Paul Taylor, Rocks, Fossils and Gems, DK Publishing, Inc., New York City, 1997
* C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979
* Wikipedia: Olivine (Accessed Nov. 9, 2005 and Dec 2022)
* 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
* Encyclopedia Britannica, http://www.britannica.com Comment: "olivine." Accessed 9 Dec. 2004 .
* 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. 561
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
Category:Materials database
OnGuard Atmospheric Corrosion Monitor

== Description ==
[Purafil, Inc.] A trademark for a small electronic instrument that continuously monitors temperature, humidity and atmospheric pollutants levels. Introduced in 1993, OnGuard® provides a digital readout of the information. Analysis of the type and concentration of pollutants are based on the corrosion rate of internal metal coupons made from copper and silver. The unit is only sensitive to corrosion causing pollutants such as ammonia, ozone, sulfur dioxide, hydrogen sulfide, nitrogen oxide, organic acids and chlorine compounds. 
See also Corrosion Classification Coupon.
== Synonyms and Related Terms ==
OnGuard® Atmospheric Corrosion Monitor
==Resources and Citations==
* Purafil: OnGuard Website
* Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
* Product Information Comment: Manufacturer's literature
Category:Materials database