Difference between revisions of "Pyridine"
Jump to navigation
Jump to search
(username removed) |
(→Risks) |
||
| (3 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
== Description == | == Description == | ||
| − | A yellow liquid with a noxious odor. Pyridine was first prepared from coal-tar in 1846 by Anderson. Pyridine is used as a [ | + | A yellow liquid with a noxious odor. Pyridine was first prepared from coal-tar in 1846 by Anderson. Pyridine is used as a [[solvent|solvent]] and it is one of the few solvents that can dissolve dried [[linseed%20oil|linseed oil]] in paints and varnishes. It is used as a denaturant for [[ethyl%20alcohol|ethanol]] to make it unfit for drinking. Pyridine has also been used as a chemical raw material for manufacturing many compounds and as a water repellent, bactericide, and herbicide. |
| − | + | [[[SliderGallery rightalign|pyridine.jpg~Chemical structure]]] | |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
azabenzene; azine | azabenzene; azine | ||
| − | [ | + | == Risks == |
| + | |||
| + | * Flammable. Flash point = 68F. | ||
| + | * Dangerous fire risk. Combustion produces highly toxic cyanide gases. | ||
| + | * Toxic by ingestion and inhalation. | ||
| + | * May be absorbed through the skin causing irritation. | ||
| + | * ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=AC290860025&productDescription=PYRIDINE%2C+FOR+ANALYSIS+2LT&vendorId=VN00032119&countryCode=US&language=en SDS] | ||
| + | * EPA lists pyridine as hazardous waste due to its toxicity and ignitability; concentrations over 10% must be disposed of appropriately | ||
| − | == | + | == Physical and Chemical Properties == |
Soluble in water, ethanol, ether, benzene, ligroin and fatty oils. | Soluble in water, ethanol, ether, benzene, ligroin and fatty oils. | ||
| Line 22: | Line 29: | ||
|- | |- | ||
! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | -42.0 | + | | -42.0 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 0.987 | + | | 0.987 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
| Line 34: | Line 41: | ||
|- | |- | ||
! scope="row"| Boiling Point | ! scope="row"| Boiling Point | ||
| − | | 115.5 | + | | 115.5 C |
|} | |} | ||
| − | == | + | ==Resources and Citations== |
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p.817 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p.817 | ||
Latest revision as of 13:58, 17 April 2024
Description
A yellow liquid with a noxious odor. Pyridine was first prepared from coal-tar in 1846 by Anderson. Pyridine is used as a Solvent and it is one of the few solvents that can dissolve dried Linseed oil in paints and varnishes. It is used as a denaturant for ethanol to make it unfit for drinking. Pyridine has also been used as a chemical raw material for manufacturing many compounds and as a water repellent, bactericide, and herbicide.
Synonyms and Related Terms
azabenzene; azine
Risks
- Flammable. Flash point = 68F.
- Dangerous fire risk. Combustion produces highly toxic cyanide gases.
- Toxic by ingestion and inhalation.
- May be absorbed through the skin causing irritation.
- ThermoFisher: SDS
- EPA lists pyridine as hazardous waste due to its toxicity and ignitability; concentrations over 10% must be disposed of appropriately
Physical and Chemical Properties
Soluble in water, ethanol, ether, benzene, ligroin and fatty oils.
| Composition | N(CH)4CH |
|---|---|
| CAS | 110-86-1 |
| Melting Point | -42.0 C |
| Density | 0.987 g/ml |
| Molecular Weight | mol. wt.=79.11 |
| Refractive Index | 1.5092 |
| Boiling Point | 115.5 C |
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p.817
- Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
- George Savage, Art and Antique Restorer's Handbook, Rockliff Publishing Corp, London, 1954
- The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 7869; ref. index=1.5092
- CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index=1.507