nyuuzyou/wikis huggingface dataset:
Sodium peroxide

== Description ==
Yellowish-white, hygroscopic powder. Sodium peroxide is used industrially as a bleach for paper, textiles, bones, feathers, ivory, wood, wax, sponges, and coral. It is also used as an disinfectant in germicidal soaps. Sodium peroxide is used for rocket propulsion and to produce oxygen aboard submarines.
== Synonyms and Related Terms ==
sodium dioxide; sodium superoxide; Solozone
[[[SliderGallery rightalign|sodium peroxide.jpg~Chemical structure]]]
== Risks ==
* Strong oxidizing agent. 
* Reacts violently with water, alcohols, acids, powdered metals and organic materials. 
* Skin contact causes irritation and burns. 
* ThermoFisher: SDS
== Physical and Chemical Properties ==
Reacts exothermically with water producing sodium hydroxide and oxygen.
Composition 	Na2O2
CAS 	1313-60-6
Melting Point 	460 C
Density 	2.805 g/ml
Molecular Weight	mol. wt. = 77.98
Boiling Point 	657 C
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 566
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* The Dictionary of Paper, American Paper Institute, New York, Fourth Edition, 1980
* Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8800
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
Category:Materials database
Sodium phosphate, dibasic

== Description ==
White, crystalline, hygroscopic powder. Dibasic sodium phosphate, or DSP, occurs in several hydrated forms from anhydrous to dodecahydrate. It is used in the manufacture of dyes, fertilizers, detergents, ceramics, and enamels. DSP is used as a sequestrant, emulsifier, and fire retardant. It acts as a mordant in dyeing and is used for weighting silk. DSP is also used as a replacement for borax in soldering and brazing. In addition, DSP is used in bleach baths for color photographs.
== Synonyms and Related Terms ==
DSP; disodium phosphate; secondary sodium orthophosphate; disodium hydrogen phosphate; phosphate of soda; Sorensen's phosphate (dihydrate)
[[[SliderGallery rightalign|sodium phosphate, dibasic.jpg~Chemical structure]]]
== Risks ==
* Nonflammable. 
* Thermo Fisher; {https://www.fishersci.com/store/msds?partNumber=AC124992500&productDescription=SODIUM+PHOSPHATE+DIBASIC+250GR&vendorId=VN00032119&countryCode=US&language=en SDS]
== Physical and Chemical Properties ==
Soluble in water, ethanol.
Composition 	Na2HPO4 - xH2O
CAS 	7558-79-4
Melting Point 	240 C
Density 	2.07 g/ml
Molecular Weight	mol. wt. = 141.96
Refractive Index	1.4412, 1.4424, 1.4526
==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
* Thomas C. Jester (ed.), Twentieth-Century Building Materials, McGraw-Hill Companies, Washington DC, 1995
* Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8805
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index = 1.4412, 1.4424, 1.4526
Category:Materials database
Sodium phosphate, monobasic

== Description ==
White, crystalline powder. Monobasic sodium phosphate, or MSP, is primarily used in baking powder. It also has applications in textile dyeing, electroplating and as a cleaner and emulsifier. In conservation, MSP has been used as a pH buffer in some enzyme-based cleaning gel mixtures (Chapman 1986).
== Synonyms and Related Terms ==
MSP; sodium acid phosphate; sodium biphosphate; sodium orthophosphate; sodium dihydrogen phosphate; monosodium dihydrogen phosphate
== Risks ==
* May be harmful by ingestion. 
* Contact may cause irritation. 
== Physical and Chemical Properties ==
Soluble in water forming sodium metaphosphate at 350-400 C. pH =4.4 - 4.5 for a 1% solution. Insoluble in ethanol.
Composition 	NaH2PO4 - H2O
CAS 	7558-80-7
Density 	2.040 g/ml
Molecular Weight	mol. wt. = 119.98
Refractive Index	1.4401, 1.4629, 1.4815
==Resources and Citations==
* V. Chapman, "Amylase in a viscous medium: textile applications", The Conservator, no. 10 1986, pp. 7-11.
* 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
* 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 8806
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index = 1.4401, 1.4629, 1.4815
Category:Materials database
Sodium phosphate, tribasic

== Description ==
White, crystalline, hygroscopic powder. Tribasic sodium phosphate, or TSP, is used as a water softener, sequestrant, buffer, emulsifier, and flame retardant. It removes dissolves hard water deposits including boiler scale. TSP is used in detergents, metal cleaners, paint removers, paper manufacturing, and leather tanning. It is also used in developing baths for color photographs.
== Synonyms and Related Terms ==
TSP; trisodium phosphate; trisodium orthophosphate; tertiary sodium phosphate; sodium hypophosphate; Oakite; phosphate cleaner
== Risks ==
* Nonflammable. 
* Toxic by ingestion. 
* Skin contact causes irritation. 
* ThermoFisher: SDS
== Other Properties ==
Soluble in water, ethanol. pH = 11.8 - 12.0 for a 1% solution.
Composition 	Na3PO4 - 12H2O
CAS 	7601-54-9
Melting Point 	75 C (dec)
Density 	1.62 g/ml
Molecular Weight	mol. wt. = 380.12
Refractive Index	1.4653, 1.4738, 1.4804
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 824
* 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
* Thomas C. Jester (ed.), Twentieth-Century Building Materials, McGraw-Hill Companies, Washington DC, 1995
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8008
* Photographic chemicals: www.jetcity.com~mrjones/chemdesc.htm
* 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
* CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index = 1.4653, 1.4738, 1.4804
Category:Materials database
Sodium pyrophosphate

== Description ==
White, crystalline powder that is used as a buffer, emulsifier, sequestrant, and water softener. Sodium pyrophosphate, or TSPP, is used in de-inking newsprint, removing rust stains, scouring wool, and dyeing textiles. TSPP is also included as an ingredient in many soaps, detergents, and cleansers.
== Synonyms and Related Terms ==
TSPP; tetrasodium pyrophosphate
[[[SliderGallery rightalign|aaiTSPP.jpg~FTIR]]]
== Risks ==
* Toxic by inhalation. 
* Contact may cause irritation. 
* ThermoFisher: SDS
== Physical and Chemical Properties ==
Soluble in water. Decomposes in ethanol.
Composition 	Na4P2O7
CAS 	7722-88-5
Melting Point 	880 C
Density 	2.45 g/ml
Molecular Weight	mol. wt. = 266
==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 9377
Category:Materials database
Sodium selenite

== Description ==
White, water-soluble, hexagonal crystals. Sodium selenite is used in the manufacture of glass to remove the green color caused by trace iron components.
== Synonyms and Related Terms ==
sodium selenite pentahydrate; selenious acid disodium salt
== Risks ==
* Highly toxic by ingestion, inhalation and skin absorption. 
* Skin contact causes burns. 
* Decomposes with acid to form the toxic gas hydrogen selenide. 
* ThermoFisher: SDS
== Physical and Chemical Properties ==
Soluble in water.
Composition 	Na2SeO3 - 5H2O
CAS 	26970-82-1
Molecular Weight	332.01
==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: entyr 8822
Category:Materials database
Sodium sesquicarbonate

== Description ==
White, needle-shaped crystals. Sodium sesquicarbonate occurs in nature as trona. It is generally used as a water softener and mildly alkaline cleaner. Sodium sesquicarbonate was recommended in the 1970s as a stabilization treatment of corroded bronze and iron objects. However, more recent examinations indicate that bronze pieces treated with sesquicarbonate are later susceptible to the formation of chalconatronite corrosion products.
== Synonyms and Related Terms ==
urao; trona
== Risks ==
* Skin contact causes irritation.
* Hill Brothers: SDS
== Physical and Chemical Properties ==
Soluble in water (pH = 10.1 for a 0.1 molar solution).
Composition 	Na2CO3-NaHCO3-2H2O
CAS 	553-96-0
Density 	2.112 g/ml
Molecular Weight	mol. wt. = 190.0
==Resources and Citations==
* W.A.Oddy, M.J.Hughes "The Stabilization of Active Bronze and Iron Antiquities by the use of Sodium Sesquicarbonate" Studies in Conservation, 15:183-189, 1970. 
* C. Horie, J.Vint, "Chalconatronite: A By-Product of Conservation?" Studies in Conservation, 27:185-186, 1982.
* 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 8823
Category:Materials database
Sodium silicate

== Description ==
A white to greenish vitreous solid or clear, syrupy liquid. Sodium silicate is made by fusing silicon dioxide (from sand) and sodium oxide (from soda ash). An aqueous solution of sodium silicate is called water glass. It forms a hard, glasslike mass when it dries. Sodium silicate has been used to preserve eggs, fireproof fabrics, and waterproof walls. Most commonly, it is used as a cement for abrasive wheels, bonding paper, corrugated boxes and cartons, wood, glass, porcelain, leather, and textiles. A water glass solution is viscous and has little tack. For use as an adhesive, pressure must be applied to hold materials together while bonding. The dried product is brittle and water sensitive. Aluminum salts can be added to the formulation to improve water resistance. Water glass has been used to make artificial stone. It was tried unsuccessfully as a binder in the 19th century for fresco paintings (see mineral painting). Water glass was also used in the Ransome process of stone preservation. This procedure used alternating solutions of an alkaline silicate and calcium chloride to form insoluble calcium silicate in the pores of the stone.
== Synonyms and Related Terms ==
water glass; waterglass; soluble glass; liquid glass; silicate of soda; sodium metasilicate; egg preserver; silicate de sodium (Fr.)
==Applications==
* Silica gel packets or beads for moisture control
* Passive fire control
* Stone consolidation
== Risks ==
* Noncombustible. 
* Corrosive. 
* Skin contact causes irritation and burns. 
* Ingestion causes vomiting. 
* PQ Corporation: SDS
== Physical and Chemical Properties ==
* Soluble in water forming strongly alkaline solutions (pH = 11-12.5) 
* Partially miscible with primary alcohols and ketones.
Composition 	2Na2O - SiO2
CAS 	1344-09-8
Refractive Index	1.513, 1.520, 1.528
Density 	1.3-1.5 liquid; 2.40-2.61 (solid)
Boiling Point 	102 C (liquid)
Melting Point 	1088 C (solid)
==Resources and Citations==
* J.H.Wills, "Inorganic Adhesives and Cements" in Handbook of Adhesives, I.Skeist (ed.), Van Nostrand Reinhold, New York, 1977. p.117-138.
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 738
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* The Dictionary of Paper, American Paper Institute, New York, Fourth Edition, 1980
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8824
* Encyclopedia Britannica, http://www.britannica.com Comment: "water glass." Accessed: 7 Apr. 2005.
* Wikipedia: http://en.wikipedia.org/wiki/Sodium_silicate (Accessed Mar. 1, 2006)
* CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index = 1.513, 1.520, 1.528
* Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
Category:Materials database
Sodium stannate

== Description ==
White or beige crystals. Sodium stannate is used to make ceramics, glass, and blueprint paper. It provides the source of tin for electroplating. Sodium stannate is also used as a mordant for dyes.
== Synonyms and Related Terms ==
disodium stannate
== Risks ==
* Toxic by ingestion and inhalation. 
* Contact causes irritation. 
* Gelest: SDS
== Physical and Chemical Properties ==
Soluble in water forming a slightly alkaline solution. Insoluble in ethanol.
Composition 	Na2Sn(OH)6
CAS 	12058-66-1
Molecular Weight	mol. wt. = 212.69
==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 8826
Category:Materials database
Sodium sulfate, anhydrous

== Description ==
White, hygroscopic crystals or powder. Anhydrous sodium sulfate occurs in nature as the mineral thenardite. Thenardite occurs most often as an evaporation product near salt lakes and playas, and is mined in arid regions of northern Africa, Siberia, Canada, and the western United States. Anhydrous sodium sulfate is used in the manufacture of kraft paper, paperboard, glass, synthetic ultramarine blue, and ceramic glaze. It is also used as a leveling agent in dyeing textiles to ensure even color acceptance.
== Synonyms and Related Terms ==
anhydrous sodium sulfate; anhydrous sodium sulphate (Br.); thenardite; salt cake
[[[SliderGallery rightalign|sodium sulfate, anhydrous.jpg~Chemical structure]]]
== Risks ==
* Noncombustible.
* ThermoFisher: SDS
== Physical and Chemical Properties ==
* Soluble in water, glycerol. Insoluble in ethanol. 
* Orthorhombic crystals with perfect cleavage in one direction. 
* Mineral thenardite is vitreous, translucent and produces a white streak.
Composition 	Na2SO4
CAS 	7757-82-6
Mohs Hardness 	2.5-3.0
Melting Point 	888 C
Density 	2.671 g/ml
Molecular Weight	mol. wt. = 142.1
==Resources and Citations==
* Grossi, "Acoustic emission monitoring to study sodium sulfate crystallization in monumental porous carbonate stone" Studies in Conservation 42 (1997), p. 115-125.
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p.785
* 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
* Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* Encyclopedia Britannica, http://www.britannica.com Comment: "thenardite." Accessed 7 Apr. 2005 .
* C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979
* John and Margaret Cannon, Dye Plants and Dyeing, Herbert Press, London, 1994
* 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
* Photographic chemicals at www.jetcity.com/~mrjones/chemdesc.htm
Category:Materials database
Sodium sulfate, decahydrate

== Description ==
Colorless, crystalline solid. Hydrated sodium sulfate occurs in nature as the mineral mirabilite. In the 17th century it was called Glauber's salt after a German chemist, Johann Glauber who extracted it from Hungarian spring water. Sodium sulfate is used in the manufacture of kraft paper, paperboard, glass, synthetic ultramarine blue, and ceramic glaze. It is also used as a leveling agent in dyeing textiles to ensure even color acceptance.
== Synonyms and Related Terms ==
sodium sulfate, hydrated; sodium sulfate crystals; mirabilite; Glauber's salt; sal mirabile; crazy water crystals
[[[SliderGallery rightalign|aaiNASO4.jpg~FTIR]]]
== Hazards and Safety ==
* Nonflammable.
* ThermoFisher Scientific: SDS
== Physical and Chemical Properties ==
Soluble in water, glycerol. Insoluble in ethanol.
Composition 	Na2SO4 - 10H2O
CAS 	7727-73-3
Melting Point 	33 C
Density 	1.464 g/ml
Molecular Weight	mol. wt. = 322.17
==Resources and Citations==
* Grossi, "Acoustic emission monitoring to study sodium sulfate crystallization in monumental porous carbonate stone" Studies in Conservation 42 (1997), p. 115-125.
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 785
* 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
* Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8829
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* John and Margaret Cannon, Dye Plants and Dyeing, Herbert Press, London, 1994
* 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
Category:Materials database
Sodium sulfide

== Description ==
Yellow, hygroscopic lumps. Sodium sulfide is used as a depilatory in dehairing hides and pulling wool. It is also used in the manufacture of rubber, dyes, and paper pulp. Sodium sulfide is used to blacken metals and as a toner for black and white photographs. It is also used in engraving and lithographic printing.
== Synonyms and Related Terms ==
sodium monosulfide; sodium sulfuret
== Risks ==
* Flammable. Fire and explosion risk with percussion or heat. 
* Toxic by ingestion. 
* Corrosive. S
* Skin contact causes irritation and burns. 
* Reacts with acids to evolve toxic hydrogen sulfide fumes.
* ThermoFisher: SDS
== Physical and Chemical Properties ==
Soluble in water slowly forming sodium thiosulfate and sodium hydroxide. Slightly soluble in ethanol. Insoluble in ether.
Composition 	Na2S
CAS 	16721-80-5
Melting Point 	1180 C
Density 	1.856 g/ml
Molecular Weight	mol. wt. = 240.18
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 786
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* E.J.LaBarre, Dictionary and Encyclopedia of Paper and Paper-making, Swets & Zeitlinger, Amsterdam, 1969
* Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8830
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* Website address 1 Comment: photographic chemicals at www.jetcity.com/~mrjones/chemdesc.htm
Category:Materials database
Sodium sulfite

== Description ==
White, crystalline powder. Sodium sulfite is primarily used as a reducing agent in photographic fixers and as a replacement for 'hypo' (sodium thiosulfate). It is also used for bleaching wool, straw, and silk. Sodium sulfite acts as an antichlor for the removal of chlorine in bleached textiles and paper, but it can leave a residual sulfur odor. It is also used for silvering glass and preserving food.
== Synonyms and Related Terms ==
sodium sulphite; disodium salt of sulfurous acid; disodium sulfite
[[[SliderGallery rightalign|sodium sulfite.jpg~Chemical structure]]]
== Risks ==
* Emits toxic fumes when heated. 
* Inhalation of powder may cause asthmatic reactions.
* ThermoFisher: SDS
== Physical and Chemical Properties ==
* Soluble in water, glycerol. 
* Solutions smell sulfurous. 
* Insoluble in ethanol.
Composition 	NaSO3
CAS 	7757-83-7
Melting Point 	600 C (dec)
Density 	2.633 g/ml
Molecular Weight	mol. wt. = 126.06
Refractive Index	1.565, 1.515
==Resources and Citations==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8831
* Photographic chemical at www.jetcity.com/~mrjones/chemdesc.htm
* CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index= 1.565, 1.515
* 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
Category:Materials database