Difference between revisions of "Sodium sulfide"
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sodium monosulfide; sodium sulfuret | sodium monosulfide; sodium sulfuret | ||
| − | == | + | == Risks == |
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| + | * 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: [https://www.fishersci.com/store/msds?partNumber=AC310180100&productDescription=SODIUM+SULFIDE+10G&vendorId=VN00032119&countryCode=US&language=en SDS] | ||
| + | |||
| + | == Physical and Chemical Properties == | ||
Soluble in water slowly forming sodium thiosulfate and sodium hydroxide. Slightly soluble in ethanol. Insoluble in ether. | Soluble in water slowly forming sodium thiosulfate and sodium hydroxide. Slightly soluble in ethanol. Insoluble in ether. | ||
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! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 1180 | + | | 1180 C |
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! scope="row"| Density | ! scope="row"| Density | ||
| − | | 1.856 | + | | 1.856 g/ml |
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! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
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| − | == | + | ==Resources and Citations== |
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* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 786 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 786 | ||
Latest revision as of 11:27, 2 June 2022
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