Difference between revisions of "Sodium nitrite"
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== Description == | == Description == | ||
| − | White to pale yellow [ | + | White to pale yellow [[hygroscopic|hygroscopic]] crystals. Sodium nitrite is used in dyeing [[textile|textiles]] with [[developed%20dye|developed dyes]]. It is also used as a [[fixative|fixative]] for color photographs. In a closed environment, a saturated solution of sodium nitrite will form an equilibrium at a relative humidity of about 65% (20C). |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
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nitrous acid sodium salt; erinitrit; nitrite | nitrous acid sodium salt; erinitrit; nitrite | ||
| − | + | == Risks == | |
| − | + | * Carcinogenic in test animals. | |
| + | * Strong oxidizing agent. | ||
| + | * Fire risk in contact with oxidizing materials. | ||
| + | * Used as an antidote for cyanide poisoning. | ||
| + | * Fisher Scientific: [https://fscimage.fishersci.com/msds/21410.htm MSDS] | ||
| − | + | == Physical and Chemical Properties == | |
| − | Deliquescent point at 20C is 65.3 % RH (see [ | + | * Soluble in water. Slightly soluble in ethanol. |
| + | * Deliquescent point at 20C is 65.3 % RH (see [[saturated%20salt%20solutions|saturated salt solutions]]) | ||
{| class="wikitable" | {| class="wikitable" | ||
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|- | |- | ||
! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 271 | + | | 271 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 2.157 | + | | 2.157 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
| Line 33: | Line 38: | ||
|} | |} | ||
| − | == | + | == Resources and Citations == |
| − | + | * 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 | |
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| − | * | ||
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* ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976 | * ''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 8793 | * ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8793 | ||
Latest revision as of 08:53, 2 June 2022
Description
White to pale yellow Hygroscopic crystals. Sodium nitrite is used in dyeing textiles with developed dyes. It is also used as a Fixative for color photographs. In a closed environment, a saturated solution of sodium nitrite will form an equilibrium at a relative humidity of about 65% (20C).
Synonyms and Related Terms
nitrous acid sodium salt; erinitrit; nitrite
Risks
- Carcinogenic in test animals.
- Strong oxidizing agent.
- Fire risk in contact with oxidizing materials.
- Used as an antidote for cyanide poisoning.
- Fisher Scientific: MSDS
Physical and Chemical Properties
- Soluble in water. Slightly soluble in ethanol.
- Deliquescent point at 20C is 65.3 % RH (see Saturated salt solutions)
| Composition | NaNO2 |
|---|---|
| CAS | 7632-00-0 |
| Melting Point | 271 C |
| Density | 2.157 g/ml |
| Molecular Weight | mol. wt. = 69.0 |
Resources and Citations
- 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
- 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 8793