nyuuzyou/wikis huggingface dataset:
Diatomaceous earth

== Description ==
An absorbent powder composed of the siliceous skeletons of microscopic water plants called diatoms. Diatomaceous earth is composed of 88% silica. The soft, whitish material is used as an inert pigment or filler in paper, paint, brick, floor tiles, ceramics, linoleum, plastic, soap, detergent, and a large number of other products. It reduces gloss, acts as a suspending agent, and increases viscosity. It absorbs dyes well and has been used as a base for lake colors. Diatomaceous earth is also used as an absorbent, and poultice since it can absorb up to 4 times its weight of water. Because of its water-absorption capabilities, it is used as a desiccating insecticide and is often mixed in formulations with pyrethrins. Diatomaceous earth has also been used as a decolorizer and filtration aid for purifying oils, fats, and waxes. Diatomaceous earth has replaced asbestos as an insulation for boilers, blast furnaces, because it is more resistant to shrinkage and does not fail at high temperatures. Other uses include sound insulation and as a very mild abrasive in metal polishes and toothpaste.
== Synonyms and Related Terms ==
diatomite; poudre de diatomées (Fr.); tierra de diatomeas (Esp.); diatomito (Port.); Diatomeenerde, Kieselgur (Deut.); diatomeënaarde (Ned.); Celite® [Celite]; infusorial earth; kieselguhr; fossil flour; tripolite; Sil-O-Cel; diatomaceous silica; siliceous earth; Super-Cel; Kenite®; Diactiv®; Primisil®;
== Risks ==
* Inhalation of dust may cause silicosis. 
* Noncombustible.
* Diatomaceous Earth: SDS
==Physical and Chemical Properties==
Soluble in alkalis. Insoluble in acids except HF.
Density 	1.9-2.35 g/ml
Refractive Index	1.435
== Comparisons ==
==Resources and Citations==
* The Dictionary of Paper, American Paper Institute, New York, Fourth Edition, 1980
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966 Comment: density 2.31 and ref.index.1.435
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p.266
* Reed Kay, The Painter's Guide To Studio Methods and Materials, Prentice-Hall, Inc., Englewood Cliffs, NJ, 1983
* Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
* J. Dawson, 'Solving Museum Insect Problems: Chemical Control' , CCI Technical Bulletin, Candian Conservation Institute, Ottawa, No. 15
* Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Diazinon

== Description ==
A liquid insecticide widely used to control fire ants, silverfish, fleas, ticks, flies, moths, termites, and cockroaches. Diazinon was introduced in 1952. It is an organophosphate type insecticide that works as a cholinesterase inhibitor. Diazinon is used for homes, gardens and pets, but it has harmful effects on birds, bees, and fish.
[[[SliderGallery rightalign|diazinonir.jpg~FTIR|diazinonstr.jpg~Chemical structure]]]
== Synonyms and Related Terms ==
O,O-diethyl-O(2-isopropyl-6-methyl-4-pyrimidinyl) phosphorothioate; dimpylate, Dianon®; Diazide®; Diazol®; Neocidal®; Sarolex®; Knox-Out; Spectracide
== Risks ==
* Toxic by ingestion, inhalation and skin absorption. 
* May discolor organic red dyes. 
* ECHEMI: SDS
==Physical and Chemical Properties==
Soluble in petroleum solvents, alcohols and ketones. Slightly soluble in water.
Composition 	C12H21N2O3PS
CAS 	333-41-5
Density 	1.116-1.118 g/ml
Molecular Weight	mol. wt. = 304.4
Refractive Index	1.4978-1.4981
Boiling Point 	83-84 C
 
==Resources and Citations==
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry #3043
* Lynda A. Zycherman, J.Richard Schrock, A Guide to Museum Pest Control, FAIC and Association of Systematics Collections, Washington DC, 1988
* J. Dawson, CCI Technical Bulletin, 'Solving Museum Insect Problems: Chemical Control' , Canadian Conservation Institute, Ottawa, No. 15
* Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
* Conservation termlist : www.hants.org.uk/museums
Category:Materials database
Diazo dye

== Description ==
A common synonym for azo dyes. Azo dyes are a large group of synthetic dyestuffs containing one or more nitrogen double bond (azo) groups as its chromophore. Azo chromophores were first discovered in 1863 when Martius and Lightfoot coupled diazonium ions and amines. Within the year, Peter Greiss prepared Bismarck brown, the first azo dye. By the 1880s numerous other azo dyes, such as para red and primuline red, were developed. Since that time most permanent modern dyestuffs have been derived from diazotized aromatic amines and are commonly called diazo dyes. The simplest diazo dyes are yellow, but changing the number of chromophores or the backbone structure can produce red, violet, blue and even black dyes. 
See also disazo dye.
== Synonyms and Related Terms ==
colorante diazoico (Esp.); colorant diazo (Fr.); azo dyes 
Examples include: Hansa yellow; para red; toluidine red; lithol red; rouge de lithol; Harrison's red
==Resources and Citations==
* Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
* Website: http://www.smith.edu/hsc/silk/Papers/meredith.html - states'Martius discovered it in 1863, by coupling diazonium ions and amines. Bismarck Brown, the name of the first azo dye, lead to an entirely new class of azo dyes, which were developed by Greiss'
* Thomas B. Brill, Light Its Interaction with Art and Antiquities, Plenum Press, New York City, 1980 Comment: gives Greiss as developer of Bismarck brown
* Website www. handprint.com - gives Peter Gries as developer
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Diazo paper

== Description ==
Reproduction paper coated with one or more diazo light-sensitive dyes to make direct positive color prints. Different colors are achieved by the use of different developers and dyestuffs, such as diazodiphenylamine sulfate (green) or diazodinitrophenol (yellow). Diazo prints, depending on the process, may either be developed under water or with ammonia fumes. Prior to the advent of large format digital copying machines, diazo copying was preferred over blueprints for technical drawings because of its fast, clean, positive image.
== Synonyms and Related Terms ==
direct process paper; diazotype paper; Whiteprint paper
==Resources and Citations==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* The Dictionary of Paper, American Paper Institute, New York, Fourth Edition, 1980
* E.J.LaBarre, Dictionary and Encyclopedia of Paper and Paper-making, Swets & Zeitlinger, Amsterdam, 1969, p. 193.
Category:Materials database
Dibond

== Description ==
[3A Composites, formerly Alusuisse Composites] A registered trademark for an inert, rigid, laminate composed of a lightweight, solid low density polyethylene core covered with two thin sheets (0.3 mm; .012 in) of aluminum. Dibond® aluminum composite sheets, or ACM, are available with a heat-cured polyester stove-lacquered finish on the front and back in numerous colors. They may also be purchased with mill-finished aluminum on the back that can be digitally printed with fine lines, high resolution images, or a mirror-like surface. The outer surfaces are protected by peel-off foil sheets prior to use. Dibond® panels can be covered with fabric for use as solid painting supports (ArPlex Artist Board).
== Synonyms and Related Terms ==
Aluminum Composite Material (AMC), Alucobond (3A Composites); ArPlex Artist Board
For comparison with alternates, see 
* Foamboards/Support panels, 3A Composites
== Applications ==
* Kerf folded case furniture
* Desiccant Chambers
* Graphic panels and labels (wrapped)
== Personal Risks==
* Dibond: SDS
==Collection Risks ==
Dibond is composed of inert materials (aluminum and polyethylene) that are normally considered safe for housing and displaying collection materials. 
Links to Oddy Test results posted on AIC Wiki Materials Database Pages for individual materials
° Alucobond Tested in 2017 (MMA, passed)
== Physical and Chemical Properties ==
Weather resistant
==Working Properties==
Dibond: How to Fabricate: Guide
==Forms and Sizes==
* Available in several colors with a thickness of 3 mm; white boards also come in 2 and 4 mm thicknesses. 
* All boards are 49.2" x 98.4",.
== Resources and Citations ==
* 3A Composites: Dibond Website
* Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
Category:Materials databaseCategory:MWGCategory: Board/Panel, Composite
Dibromoindigo

== Description ==
A synthetic coal tar dye of the same composition (6,6'-dibromoindigo) as murex purple. Dibromoindigo was developed in 1904 causing the expensive natural product to became obsolete.
== Synonyms and Related Terms ==
6,6'-dibromoindigo; 6,6'-dibromoindigotin; CI 75800
==Physical and Chemical Properties==
* Insoluble in organic solvents and water. 
* Unaffected by alkalis. 
* The color is lightfast except when exposed to nitric acid or chlorine bleaches.
* CAS = 17670-06-3
==Resources and Citations==
* Helmut Schweppe, Schweppe color collection index and information book Comment: CI 75800, ammonia-sodium dithionite vat or sodium hydroxide-sodium dithionite vat
Category:Materials database
Dibutyl phthalate

== Description ==
A colorless, odorless, oily liquid commonly used as a plasticizer in coatings, adhesives, and elastomers. In the textile industry, dibutyl phthalate (DBP) is used as a lubricating agent and is sprayed on textiles as an insect repellent. DBP is also used as a solvent for printing inks, paper coatings, resins, and perfume oils.
==[[[SliderGallery rightalign|dibutyl phthalate.jpg~Chemical structure]]]
n-butyl phthalate; DBP; dibutylphthalate; 1,2-benzenedicarboxylic acid dibutyl ester; phthalic acid dibutyl ester
== Risks ==
* Toxic, inhalation and ingestion may cause irritation to the respiratory and digestive systems. 
* Skin contact causes irritation. 
* Combustible. Flash point = 157 C (315 F) 
* ThermoFisher: SDS
==Physical and Chemical Properties==
Soluble is ethanol, ether, acetone benzene. Insoluble in water.
Composition 	C16H22O4
CAS 	84-74-2
Melting Point 	-35 C
Density 	1.0459 g/ml
Molecular Weight	mol. wt.=278.35
Refractive Index	1.490
Boiling Point 	340 C
==Resources and Citations==
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966 Comment: Flash point = 160C; bp = 200-216C
* Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
* Website: www.haz-map.com/allergic.htm
* CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index=1.490
Category:Materials database
Dibutyl tin oxide

== Description ==
Toxic white powder that has been used as a fungicide and wood preservative.
== Synonyms and Related Terms ==
dibutyltin oxide; di-n-butyltin oxide; dibutyloxostannane; dibutyloxotin
==Risks==
* Toxic by ingestion, inhalation, and skin absorption. 
* Biohazard. 
* Combustible, releases toxic fumes. 
* ThermoFisher: SDS
== Physical and Chemical Properties ==
Composition 	C8H18OSn/(C4H9)2SnO
CAS 	818-08-6
Melting Point 	210 C(dec)
Density 	1.6 g/ml
Molecular Weight	mol. wt. = 248.9
Category:Materials database
Dibutyltin dilaurate

== Description ==
A clear yellow liquid used as a stabilizer in polyvinyl chloride resins. Dibutyltin dilaurate is also used as a catalyst for curing urethane and silicone polymers.
== Synonyms and Related Terms ==
dibutylbis((1-oxododecyl)-oxy) stannan; dibutylbis(lauroyloxy)tin; Butynorate; Tinostat; Davainex
== Risks ==
* Combustible. Flash point = 179 C. 
* Contact may cause irritation. 
* ThermoFisher: SDS
==Physical and Chemical Properties==
Soluble in ligroin, benzene, acetone, carbon tetrachloride, ether and organic ester. Insoluble in water.
Composition 	C32H64O4Sn
CAS 	77-58-7
Melting Point 	22-24 C
Density 	1.006 g/ml
Molecular Weight	mol. wt. = 631.6
Boiling Point 	8 C
Category:Materials database
Dichlorodifluoromethane

== Description ==
A colorless, noncorrosive, and nonflammable gas that is used as a leak detecting agent and as a fire suppressant. Dichlorodifluoromethane was formerly used as an aerosol propellant and a refrigerant. Its use was banned in the late 20th century because of damage to atmospheric ozone. 
See also chlorofluorocarbon.
== Synonyms and Related Terms ==
Fluorocarbon-12; difluorodichloroethane; Freon 12; Genetron 12; Halon; Isotron 2
== Risks ==
* Overexposure to gas may cause dizziness, convulsions, coma and cardiac arrest due to asphyxiation. 
* The liquid may cause frostbite
* Airgas: SDS
==Physical and Chemical Properties==
Soluble in ethanol and ether. Insoluble in water. 
Composition 	CCl2F2
CAS 	75-71-8
Melting Point 	-158 C
Density 	1.5 g/ml
Molecular Weight	mol. wt. = 120.9
Boiling Point 	-29.8 C
Category:Materials database
Dichlorodimethylhydantoin

== Description ==
A white powder with a slight chlorine smell. Dichlorodimethylhydantoin is a chlorinating agent that is used in powder type household bleaches (Sage's Dry Bleach, Colgate's Pruf). When kept dry, it has a long shelf life with only minor loss of chlorine. On contact with water, it forms hypochlorous acid that acts as a bleaching agent and disinfectant.
== Synonyms and Related Terms ==
1,3-dichloro-5,5-dimethylhydantoin; dichloratin; 2,4-Imidazolidineione; DDH; Dactin; Halane; household laundry bleach
[[[SliderGallery rightalign|dichlorodimethylhydantoin.jpg~Chemical structure]]]
== Risks ==
* Irritating to eyes, nose, skin and lungs. Combustible with the evolution of chlorine. 
* Fisher Scientific: MSDS
==Physical and Chemical Properties==
* Soluble in chlorinated solvents, alcohols and benzene. 
* Slightly soluble in water forming a solution with pH about 4.4
Composition 	C5H6Cl2N2O2
CAS 	118-52-5
Melting Point 	132 C
Density 	1.5 g/ml
Molecular Weight	mol. wt. = 197.02
==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 3115
Category:Materials database
Dichlorofluorescein

== Description ==
An orange reagent used as a fluorescent indicator for the presence of oils and fats. Dichlorofluorescein (DCF) is available as a powder or a premixed solution of 0.2% in ethanol. The lipid environment can effect the fluorescence color; DCF fluoresces pink in saturated lipids and bright yellow in unsaturated lipids (Wolbers et al., 1990). Acrylics can give a positive result.
== Synonyms and Related Terms ==
4,5-dichlorofluorescein; D&C Orange no.8 (delisted); DCF; 4,5-dichloro-3,6-fluorandiol; fluorescein chloride
==Risks==
* ThermoFisher: SDS
==Physical and Chemical Properties==
* Soluble in ethanol and dilute alkali. Slightly soluble in glycols and glycerol. Insoluble in water, dilute acids, oils, fats and waxes. 
* Maximum absorption wavelength=513 nm; 
* Maximum emission wavelength= 532 nm.
* The fluorescence of dichlorofluorescein changes with pH. It is colorless below pH=4.0 and green fluorescent above 5.0.
Composition 	C20H10Cl2O5
CAS 	2320-96-9
Molecular Weight	mol. wt. = 401.19
==Resources and Citations==
* R. Wolbers, N. Sterman, C. Stavroudis, "Notes for Workshop on New Methods in the Cleaning of Paintings", Getty Conservation Institute, Los Angeles, 1990. 
* John M.Messinger "Ultraviolet-Fuorescence Microscopy of Paint Cross Sections" JAIC 31(3):267-74, 1992
* 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, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 3051; CAS=2320-96-9
* CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: The fluorescence of dichlorofluorescein changes with pH. It is colorless below pH=4.0 and green fluorescent above 5.0.
* Sigma Dyes, Stains and Natural Pigments, Infrared Library, Nicolet, 1991-1995 Comment: OMNIC: formula= C20H10Cl2O5, CAS= 76-54-0
Category:Materials database
Dichlorophene

== Description ==
A fungicide and disinfectant used in antimicrobial soaps and shampoos. Dichlorophene has been used on stone and plaster to kill lichen and algae (Rowland and Riley 1981). It is also used in industry as a textile preservative and as a photosensitizer.
== Synonyms and Related Terms ==
dichlorophen; DDDM; 2,2-methylenebis[4-chlorophenol]; G-4; Anthiphen; Didroxane; Di-phenthane-70; Panacide [BDH]; Parabis; Preventol G-D; Teniatol; Cuniphen
== Risks ==
* Inhalation, ingestion, and contact may cause severe irritation. 
* LD50(mice) = 1200 mg/kg 
* May produce toxic chloride fumes when burned. 
* Biosynth Carbosynth: SDS
== Physical and Chemical Properties ==
Soluble in acetone, ethers and alcohols. Insoluble in water.
Composition 	C13H10Cl2O2
CAS 	97-23-4
Melting Point 	177-178 C
Molecular Weight	mol. wt. = 269.13
== Resources and Citations ==
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 3120
* G.Caneva, M.P.Nugari, O.Salvadori, Biology in the Conservation of Works of Art, ICCROM, Rome, 1991
* Tom Rowland, Noel Riley, A-Z Guide to Cleaning, Conserving and Repairing Antiques, Constable and Co., Ltd., London, 1981
* Website: http://www.dermacom.ch/private/alindex/DI013.htm
Category:Materials database
Dichlorotetrafluoroethane

== Description ==
A colorless, noncorrosive, and nonflammable gas used as a solvent and fire suppressant. Dichlorotetrafluoroethane was formerly used as an air conditioner fluid and a refrigerant. Its use was banned in the late 20th century because of damage to atmospheric ozone. 
See chlorofluorocarbon.
== Synonyms and Related Terms ==
fluorocarbon-114; Freon 114; tetrafluorodichloroethane; cryofluorane; Frigen 114; Arcton 114; refrigerant 114
== Risks ==
* Overexposure of gas may cause dizziness, convulsions, coma and cardiac arrest due to asphyxiation. 
* Liquid may cause frostbite or burns. 
* Sigma Aldrich: SDS
==Physical and Chemical Properties==
Soluble in ethanol, ether. Insoluble in water.
Composition 	CClF2CClF2
CAS 	76-14-2
Melting Point 	-94 C
Density 	1.53 g/ml
Molecular Weight	mol. wt. = 170.92
Refractive Index	1.3092
Boiling Point 	3.55
Category:Materials database
Dichlorvos

== Description ==
A colorless, toxic liquid insecticide that has been commonly used in plastic insect strips. Dichlorvos has a high vapor pressures and when it is impregnated in the plastic strips, it will slowly evaporate over a three month period. It is most effective against flying insects and only effective for cockroaches in a sealed container (Zycherman and Shrock 1988). Dichlorvos functions as a cholinesterase inhibitor. In the presence of water, dichlorvos can decompose. Some metals (iron, steel, copper, brass, tin, zinc, lead, and silver) have tarnished when exposed to the vapors from dichlorvos strips (Zycherman and Shrock 1988). In 1995, the use of dichlorvos was restricted for all applications except for impregnated strips used in outdoor insect traps.
[[[SliderGallery rightalign|dichlorvosir.jpg~FTIR|dichlorvosstr2.jpg~Chemical structure]]]
== Synonyms and Related Terms ==
dimethyldichlorovinylphosphate; 2,2-dichlorodivinyldimethyl phosphate; DDVP; dichlorovos; Al-20; Vapona® strips [Shell]; Vaportale® [Shell]; No-Pest® strips [Spectrum]; Vaponite; Nuvan; Dichlorman; Estrosol; Herkol; Nogos; Sheltox
== Risks ==
* Toxic by inhalation, skin absorption and ingestion causing headache, vomiting, convulsions and cardiac irregularities. 
* Carcinogen and suspected teratogen by ingestion. 
* Can corrode metals.
* ECHEMI: SDS
==Physical and Chemical Properties==
Miscible with ethanol and most nonpolar solvents. Slightly soluble in water. Decomposes in quickly in alkalis and slowly in water.
Composition 	C4H7Cl2O4P
CAS 	62-73-7
Density 	1.415 g/ml
Molecular Weight	Mol. wt. = 220.98
Boiling Point 	140 C
==Resources and Citations==
* L. Goldberg, A History Of Pest Control Measures In The Anthropology Collections, National Museum Of Natural History, Smithsonian Institution, JAIC (35):23-43, 1996
* J. Dawson, CCI Technical Bulletin, 'Solving Museum Insect Problems: Chemical Control' , Canadian Conservation Institute, Ottawa, No. 15
* Lynda A. Zycherman, J.Richard Schrock, A Guide to Museum Pest Control, FAIC and Association of Systematics Collections, Washington DC, 1988
* Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
* Website: www.speclab.com/compound/c62737
Category:Materials database
Dichroic glass

== Description ==
A type of glass that will reflect and transmit different wavelengths of light, thus visually appearing as different colors in reflected and transmitted light. Since glass is not crystalline, the dichroic effect is achieved by coating thin layers of various chemicals on the surface of clear glass. Examples of the chemicals are: zinc sulfate, magnesium fluoride, gold, copper, nickel, cobalt oxide, iron oxide, chromic oxide, or titanium dioxide. The oldest known example of dichroic glass is the Lycurgis Cup from the 4th century. It appears a dull green in reflected light and a deep wine color in transmitted light. Another example is Alexandrit glass produced in Bohemia in the early 1900s. Currently dichroic films are being used in lamps (dichroic reflector spotlight) and solar control windows (Low-E glass) for energy savings.
== Synonyms and Related Terms ==
dicroic glass (sp); verre dichroïque (Fr.); vidro dicróico (Port.)
== Risks ==
Coatings may deteriorate and change over time.
Category:Materials database
Dichroic glass filter

== Description ==
An infrared (IR) reducing light filter designed to mount on the front glass of a lamp. Dichroic glass filters transmit visible and ultraviolet wavelengths of light while reflecting IR light back to the lamp source. The reflected IR adds heat to the source thus decreasing the total energy requirements.
== Synonyms and Related Terms ==
filtre dichroïque (Fr.); filtro dicróico (Port.)
== Risks ==
Coatings may deteriorate and change over time
Category:Materials database
Dichroic reflector spotlight

== Description ==
An intense, but cool light with good color rendering. The lamp is directed at a dichroic mirror that reflects visible radiation to the object for imaging while transmitting the infrared radiation through the mirror and away from the object. Dichroic coatings work well initially but can deteriorate over time causing noticeable changes in the color and wavelength distribution of the light.
== Synonyms and Related Terms ==
dichroic lamp filter; M-16 lamp; Coolbeam lamp
== Risks ==
Coatings may deteriorate and change over time
==Resources and Citations==
* Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
Category:Materials database