nyuuzyou/wikis huggingface dataset:
Hydrogen selenide

== Description ==
A colorless, foul smelling gas. Hydrogen selenide reacts with most metals to form metals selenides.
== Synonyms and Related Terms ==
selenium hydride
== Risks ==
* Dangerous fire and explosion risk. 
* Reacts violently with oxidizing materials. 
* Toxic by inhalation and ingestion. 
* Skin irritant. 
* Airgas: SDS
==Physical and Chemical Properties==
Soluble in water, carbon disulfide.
Composition 	H2Se
CAS 	7783-07-5
Melting Point 	-66 C
Molecular Weight	mol. wt. = 81.0
Boiling Point 	-41.3 C
Category:Materials database
Hydrogen sulfide

== Description ==
A colorless gas that smells like rotten eggs. Hydrogen sulfide occurs as a component in natural gas, volcanic gas, and sulfur springs. Other sources of the pollutant include the combustion of sulfur containing coal, and the organic decay of manure. Hydrogen sulfide can also be emitted from some paints, textiles, and vulcanized rubbers. As a component in air pollution, it is responsible for tarnishing silver and blackening lead pigments. Commercially, hydrogen sulfide is used as an antiseptic and a bleach.
* See Pollutant record for a comparison table of aerosols and collection risks.
== Synonyms and Related Terms ==
sulfureted hydrogen; hydrosulfuric acid; ashepatic air; fetid air of sulfur; sulphydric acid; hydrothionic acid
== Personal Risks ==
* Highly toxic by inhalation. 
* Causes irritation to eyes and mucous membranes. 
* Flammable, dangerous fire risk. Explosive limits 4.3-46%.
* Airgas: SDS
==Collection Risks==
* Corrodes or tarnish silver, copper, bronze and lead
* Corrodes daguerreotypes
* Can cause silver mirroring
* Yellowing of paper and fabric
* Lead white darkening
* Red rot in leather
==Physical and Chemical Properties==
Soluble in water, glycerol, gasoline, kerosene, carbon disulfide. Burns in air with a pale blue flame.
Composition 	H2S
CAS 	7783-06-4
Melting Point 	-83.8 C
Molecular Weight	mol. wt. = 34.08
Boiling Point 	-60.2 C
==Physical and Chemical Properties==
* Jean Tétreault, 'Products used in Preventive Conservation' Technical Bulletin #2, CCI, 2017. Link
* Wikipedia: Hydrogen sulfide Accessed July 2023
Category:Materials databaseCategory: MWGCategory: Climate/Environment
Hydrogen sulfide scavenger

== Description ==
Paper or cloth impregnated with compounds that absorb or react with hydrogen sulfide. Examples of sorbents are activated carbon, activated alumina, and molecular sieves. Examples of antitarnish compounds are zinc carbonate, fine particle silver, zinc oxide, Copper oxide, aluminum oxide, and some metal salts.
== Synonyms and Related Terms ==
Schwefelwasserstoffabsorber (Deut.); piège à hydrogène sulfuré (Fr.); 
Brand names: Silvercloth [Pacific]; Silversheen[Willeeco]; Silver Protection Strips [Hagerty]; Silver Protector strips [3M]; Silver Saver Antitarnish strips [Daubert Coated Products]
==Resources and Citations==
* L.S.Mun, "Assessment on the rate of Effectiveness of Pollutant Scavengers on Hydrogen Sulphide" [file:///C:/Users/mderr/Downloads/study-project-assessment-on-the-rate-of-effectiveness-of-pollutants-scavengers-on-hydrogen-sulphide.pdf Link]
* L.Selwyn "Historical Silver: Storage, Display and Tarnish Removal" J.IIC-GC, Vol. 15, 1990. 
* M.Gilberg and Cook, "The Use of Hydrogen Sulphide Scavengers for the Protection of Silver Objects in Museum Collections" ICOM Metals Working Group Newsletter Feb 1986 .
* Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
Category:Materials database
Hydrogenated rosin

== Description ==
Hydrogenated rosin is used in protective coatings, papers, sizes, adhesives, and soaps (Brady 1971)
== Synonyms and Related Terms ==
colofonia hidrogenada (Esp.)
==Physical and Chemical Properties==
* Acid number = 162 
* Saponification value = 167
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 673
Category:Materials database
Hydrogenated turpentine

== Description ==
A turpentine substitute prepared by hydrogenating pine oil Hydrogenated pine oil has an unpleasant odor and was used during World War II as a substitute for turpentine. It is currently scarce although it can occasionally be found sold under the name of turpentine substitute even though that name is most often used for mineral spirits.
== Synonyms and Related Terms ==
hydrogenated pine oil; esencia de trementina hidrogenada (Esp.); essence de térébenthine hydrogénée (Fr.)
Category:Materials database
Hydrolysis

== Description ==
A chemical decomposition reaction in which water is added to a compound that then splits to form two or more new compounds. Hydrolysis occurs when a compound, such as a salt, attaches to a water molecule then divides into two components with a hydroxyl ion attached to one (base) and a hydrogen ion attached to the other (acid). For example, hydrolysis of aluminum sulfate (papermaker's alum) forms aluminum hydroxide and sulfuric acid. Another example of hydrolysis is when starch is broken down to glucose.
== Synonyms and Related Terms ==
Hydrolyse (Deut.); hydrolyse (Fr.); hidrólise (Port.)
Category:Materials database
Hydromel

== Description ==
An old name for a mixture of honey and water that was used as a plasticizer in watercolor paints (Mayer 1969). Hydromel ferments to form mead.
== Synonyms and Related Terms ==
plasticizer
==Resources and Citations==
* R. Mayer, The Artist's Handbook of Materials and Techniques, Viking Press, New York, 1981
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Hydrometer

== Description ==
1) An instrument used to measure the specific gravity of liquids or liquid/solid mixtures. A hydrometer usually has a hollow, sealed graduated tube that is placed in the solution of interest. The tube sinks to a position that corresponds to the density of the liquid. Hydrometers are used to compared the density of glazes and to ensure consistency from batch to batch.
2) An instrument used to measure the velocity of moving water.
== Synonyms and Related Terms ==
Areometer (Deut.); slip-gauge
==Resources and Citations==
* Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942
* 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
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 946
* Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992
Category:Materials database
Hydroquinone

== Description ==
A white crystalline compound. Hydroquinone is used in black and white photographic processing as a reducing agent. It is also used as an antioxidant in polymers and as a stabilizer in paints and varnishes.
[[[SliderGallery rightalign|aaiHYDROQUINONE.jpg~FTIR|hydroquinone.jpg~Chemical structure]]]
== Synonyms and Related Terms ==
1,4-benzenediol; p-dihydroxybenzene; hydroquinol; quinol; Aida; Black and White Bleaching Cream; Eldoquin; Eldopaque; Tecquinol; Quinol; hydrochinon; hydrokinone; 1,4-dihydroxybenzene;
== Risks==
* Combustible. Flash point =165 C (329 F). 
* Highly toxic by ingestion and inhalation. 
* Skin contact can cause severe irritation. 
* Echemi: SDS
==Physical and Chemical Properties==
Soluble in water, ethanol and ether. Slightly soluble in benzene.
Composition 	C6H4(OH)2
CAS 	123-31-9
Melting Point 	170-171 C
Density 	1.332 g/ml
Molecular Weight	mol. wt.=110.11
Boiling Point 	285-287 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 4796
* Photographic chemicals: www.jetcity.com/~mrjones/chemdesc.htm - 
* Wikipedia: http://en.wikipedia.org/wiki/Hydroquinone (Accessed Mar. 20, 2006)
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
Category:Materials database
Hydrostone

== Description ==
A common name used for casting plaster mixed with water. A typical mixing ratio for hydrostone is 100 parts plaster in 45 parts water.
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Hydroxyacetic acid

== Description ==
Colorless, deliquescent crystals that occur naturally as a component in sugarcane. Hydroxyacetic acid, or glycolic acid, is a weak acid. It is sold commercially as a 70% solution. It is used in processing and dyeing textiles and leather. Hydroxyacetic acid is also used for cleaning, polishing, and soldering metals.
== Synonyms and Related Terms ==
glycolic acid; hydroxyethanoic acid
[[[SliderGallery rightalign|hydroxyacetic acid.jpg~Chemical structure]]]
== Risks ==
* Corrosive. 
* Contact causes irritation and burns. 
* ThermoFisher: SDS
== Physical and Chemical Properties ==
Soluble in water, methanol, ethanol, acetone, acetic acid, ether.
Composition 	CH2OHCOOH
CAS 	79-14-1
Melting Point 	80 C
Density 	1.27 g.ml
Molecular Weight	mol. wt. = 76.05
== Resources and Citations ==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971
* 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 4508
Category:Materials database
Hydroxyanthraquinone

== Description ==
The base structure of the colorant in many natural red dyes. Many of these colorants have also been made synthetically. Some examples of hydroxyanthraquinones are: 
* alizarin - 1,2-dihydroxyanthraquinone. 
* purpurin - 1,2,4-trihydroxyanthraquinone. 
* pseudopurpurin - 1,2,4-trihydroxyanthraquinone-3-carboxylic acid. 
* munjistin - 1,3-dihydroxyanthraquinone-2-carboxylic acid. 
* morindone - 1,5,6-trihydroxy-2-methylanthraquinone. 
* xanthopurpurin - 1,3-hydroxyanthraquinone. 
* anthragallol - 1,2,3-trihydroxyanthraquinone. 
* rubiadin - 1,3-hydroxy-2-methylanthraquinone.
== Synonyms and Related Terms ==
hidroxi antraquinona (Esp.); hydroxyanthraquinone (Fr.); hidroxiantraquinona (Port.)
== Resources and Citations ==
* Artists' Pigments: A Handbook of their History and Characteristics, Elisabeth West FitzHugh, Oxford University Press, Oxford, Vol. 3, 1997 Comment: H.Schweppe, J.Winter, "Madder and Alizarin",
Category:Materials database
Hydroxyethyl cellulose

== Description ==
A cellulose ether with a hydroxyethyl functional group substitution. Hydroxyethyl cellulose (HEC) is a nonionic thermoplastic polymer that is soluble in water as well as many organic solvents. It is a white granular solid that is used as an emulsifier, stabilizer, thickener, and film former in many types of solutions such as foods, cosmetics, paints, and glazes. It is also used as a sizing agent and consolidant. Hydroxyethyl cellulose discolors and becomes insoluble with thermal aging (Feller and Wilt 1990).
[[[SliderGallery rightalign|aaiHYDROXYETHYLCELL.jpg~FTIR]]]
== Synonyms and Related Terms ==
HEC; hydroxyethylcellulose; hidroxietilcelulosa (Esp.); hidroxietilcelulose (Port.) 
Examples: Natrosol® [Aqualon]; Cellosize® [Dow]; Tylose® H [SE Tylose]
==Physical and Chemical Properties==
* Soluble in water, ethylene glycol. Insoluble in ethyl ether. 
* pH = 6.5-8.5. 
* Softening point = 135-140 C
* Refractive Index = 1.51
== Comparisons ==
==Resources and Citations===
* R.Feller, M.Wilt, Evaluation of Cellulose Ethers for Conservation, in Research in Conservation Series, Getty Conservation Institute, 1990.
* Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989
Category:Materials database
Hydroxylamine hydrochloride

== Description ==
Colorless, columnar crystals. Hydroxylamine hydrochloride is used as a reducing agent in photography. It is also used as an antioxidant in some commercial products.
== Synonyms and Related Terms ==
oxammonium hydrochloride; hydroxylammonium chloride; hydroxylaminium chloride
== Risks ==
* Toxic by ingestion. 
* Inhalation and contact with skin, eyes, and membranes are harmful. 
* Decomposes with moisture to yield corrosive products and toxic fumes. 
==Physical and Chemical Properties==
Soluble in water, glycerol, propylene glycol. Insoluble in ether. 
pH = 3.2 (0.2 molar solution)
Composition 	ClH4NO
CAS 	5740-11-1
Melting Point 	151 C (dec)
Density 	1.7 g/ml
Molecular Weight	mol. wt.=69.50
Category:Materials database
Hydroxylamine sulfate

== Description ==
Colorless crystals used as a reducing agent in the photographic processing. Hydroxylamine sulfate is also used for chemical synthesis, for rustproofing, and to dehair hides.
== Synonyms and Related Terms ==
HS; hydroxylammonium sulfate; oxammonium sulfate
== Risks ==
* Skin contact is irritating and corrosive. 
* Hygroscopic. 
* May cause methemoglobinemia. 
* Inhalation and ingestion cause illness and possible death. Suspected teratogen. 
* Fisher Scientific: MSDS
==Physical and Chemical Properties==
Soluble in water. Slightly soluble in ethanol.
Composition 	(NH2OH)2-H2SO4
CAS 	10039-54-0
Melting Point 	177 C (dec)
Density 	1.9 g/ml
Molecular Weight	mol. wt. = 164.14
==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 4874
* Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
Category:Materials database
Hydroxyproline

== Description ==
Colorless crystals that are a nonessential amino acid. Hydroxyproline is primarily found in collagen and is formed by the hydrolysis of gelatin.
== Synonyms and Related Terms ==
4-hydroxy-2-pyrrolidinecarboxylic acid; L-4-hydroxyproline
== Risks ==
* Inhalation, ingestion or contact may cause irritation. 
* EChemi: SDS
==Physical and Chemical Properties==
Soluble in water. Slightly soluble in ethanol. Insoluble in ether.
Composition 	HOC4H7NCOOH
CAS 	51-35-4
Melting Point 	274 C
Molecular Weight	mol. wt. = 131.13
Category:Materials database
Hydroxypropyl cellulose

== Description ==
A cellulose ether with a hydroxypropyl functional group substitution. Hydroxypropyl cellulose (HPC) is a nonionic thermoplastic polymer that is soluble in water as well as many organic solvents. Hydroxypropyl cellulose is used as an emulsifier, stabilizer, thickener, and film former in many types of solutions such as foods, cosmetics, paint removers, paints and glazes. It is also used as a sizing agent for paper and consolidant for leather. While HPC has good photochemical stability, it has poor thermal stability and discolors with age. Although the low molecular weight products, such as Klucel® G, performed better than the high molecular weight products, such as Klucel® M, testing indicates that HPC polymers should not be considered for long term use (Feller and Wilt 1990).
== Synonyms and Related Terms ==
hidroxipropilcelulosa (Esp.); hidroxipropilcelulose (Port.); HPC; hydroxypropylcellulose; cellulose 2-hydroxypropyl ether; oxypropylated cellulose 
Examples: Klucel® [Aqualon]
== Risks ==
* Combustible.
* Fisher Scientific: MSDS
==Physical and Chemical Properties==
* Soluble in cold water, ethanol, acetone and many organic solvents. Insoluble in hot water. 
* pH = 5.0-8.5. 
* Softening point = 130C.
* CAS = 9004-64-2
* Refractive Index = 1.56
== Comparisons ==
==Resources and Citations==
* R.Feller, M.Wilt, Evaluation of Cellulose Ethers for Conservation, in Research in Conservation Series, Getty Conservation Institute, 1990, p.94.
* 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 #4888
* Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989
Category:Materials database
Hydroxypropylmethyl cellulose

== Description ==
A cellulose ether with both methyl and hydroxypropyl functional group substitutions. Hydroxypropylmethyl cellulose (HPMC) is a nonionic thermoplastic polymer that dissolves in water to produce a solutions with a wide range in viscosity. It has greater gelling capacity than hydroxypropyl cellulose (HPC) and is more tolerant to salts and additives. HPMC is used as a thickening agent, stabilizer, emulsifier and film forming agent. Aging studies indicate that HPMC has very good stability with negligible discoloration or weight loss (Feller and Wilt 1990).
== Synonyms and Related Terms ==
hidroxipropilmetilcelulosa (Esp.); hidroxipropilmetilcelulose (Port.); HPMC; hydroxypropylmethylcellulose; cellulose 2-hydroxypropyl methyl ether; propylene glycol ether; hypromellose 
Examples: Gonak; Goniosol; Lacril; Methocel [Dow]; Ultra Tears
== Risks ==
* Combustible.
==Physical and Chemical Properties==
* Soluble in cold water to produce a clear viscous colloidal solution.
* Insoluble in hot water, anhydrous ethanol, ether or chloroform.
==Resources and Citations==
* R.Feller, M.Wilt, Evaluation of Cellulose Ethers for Conservation, in Research in Conservation Series, Getty Conservation Institute, 1990, p. 95.
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Richard C. Wolbers, Nanette T. Sterman, Chris Stavroudis, Notes for Workshop on New Methods in the Cleaning of Paintings, J.Paul Getty Trust, Los Angeles, 1990
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 4889
* Teri Hensick, contributed information, 1998
Category:Materials database
Hydrozincite

== Description ==
A mineral composed of basic zinc carbonate. Hydrozincite deposits are found in Missouri, Pennsylvania, Utah, California, Nevada and Europe. It is a grayish -white ore that fluoresces in ultraviolet light. Basic zinc carbonate also occurs as zinc bloom, a tarnish that forms on metallic zinc in moist air.
== Synonyms and Related Terms ==
zinc bloom
==Physical and Chemical Properties==
Composition 	Zn5(CO3)2(OH)6
Mohs Hardness	2.0 - 2.5
Density 	3.5-4.0 g/ml
==Resources and Citations==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
Category:Materials database
Hygrometer

== Description ==
Any of several instruments used for measuring atmospheric humidity. Some types of hygrometers are:
* psychrometer - measures the temperature difference between a wet-bulb and a dry-bulb thermometer. A sling psychrometer is mounted in a frame, then whirled in the air for ventilation.
* hair hygrometer - measures the expansion and contraction of a human hair that is mounted under tension. A gold beater's skin hygrometer uses a proteinaceous membrane for the same type of measurement.
* Dew-point hygrometer - measures the temperature for the formation and evaporation of dew that is observed using a photoelectric cell.
* Diffusion hygrometer - measures the diffusion of water vapor through a porous membrane.
* lithium chloride hygrometer - measures the temperature and electrical conductivity of a hygroscopic salt that becomes conductive when it absorbs water.
* liquid crystal hygrometer - contains several chemical salts that respond to different humidity levels by rearranging their crystal structure. It never requires calibration.
== Synonyms and Related Terms ==
dial hygrometer; hair hygrometer; dew-point hygrometer; diffusion hygrometer; lithium chloride hygrometer; liquid crystal hygrometer; hygrometr (Ces.); Hygrometer (Dan., Deut., Ned., Sven.); hygromètre (Fr.); higrómetro (Port.)
==Resources and Citations==
* Boise Cascade Paper Group, The Paper Handbook, Boise Cascade, Portland OR, 1989
* Marjorie Shelley, The Care and Handling of Art Objects, The Metropolitan Museum, New York, 1987
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
* 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 American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* Wikipedia: http://en.wikipedia.org/wiki/Hygrometer (Accessed Jan. 15, 2006)
Category:Materials database
Hygroscopic

== Description ==
A material that readily absorbs and retains moisture. Examples of hygroscopic materials are silica gel, lithium chloride, calcium chloride, paper, and cotton.
Note: The term 'hydroscopic' which means viewing an object under water, is often incorrectly used.
== Synonyms and Related Terms ==
hygroscope; hygroskopisch (Deut.); hygroscopque (Fr.); higroscópico (Port.)
Category:Materials database
Hygrothermograph

== Description ==
An instrument that records temperature and relative humidity as a function of time. Analog hygrothermographs record continuous measurement on a chart wrapped around a rotating drum. The most common hygrothermograph is a hair hygrometer combined with a thermograph. It should be calibrated every two to three months with a psychrometer. Most hygrothermographs have been replaced by dataloggers.
== Synonyms and Related Terms ==
thermohygrograph; Hygrothermograph (Deut.)
==Resources and Citations==
* Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
* Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
* A Glossary of Paper Conservation Terms, Margaret Ellis (ed.), Conservation Center of the Institute of Fine Arts, New York City, 1998
* WAMOL reCollections Glossary -http://amol.org.au/recollections/7/c/htm
Category:Materials database
Hyplar

== Description ==
[Grumbacher] A brand name for some synthetic latex emulsion artists' paints. Hyplar Acrylic Colors were introduced in 1962 as an acrylic emulsion paint for artists. A slight formula change was made in 1966 (Grumbacher website 2000). Another paint series, Hyplar Artists' Colors, contains a copolymer emulsion of polyvinyl acetate and an acrylic resin.
[[[SliderGallery rightalign|HyplarsiennaIR.jpg~FTIR]]]
== Synonyms and Related Terms ==
Hyplar Acrylic Colors; Hyplar Artists' Colors
==Resources and Citations==
* Sanford Corp: Grumbacher history
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
Category:Materials database