Difference between revisions of "Hydroquinone"
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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. | 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 == | == 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; | 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: [https://www.echemi.com/sds/hydroquinone-pd20150901004.html SDS] | ||
| − | == | + | ==Physical and Chemical Properties== |
Soluble in water, ethanol and ether. Slightly soluble in benzene. | Soluble in water, ethanol and ether. Slightly soluble in benzene. | ||
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|- | |- | ||
! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 170-171 | + | | 170-171 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 1.332 | + | | 1.332 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
| Line 31: | Line 36: | ||
|- | |- | ||
! scope="row"| Boiling Point | ! scope="row"| Boiling Point | ||
| − | | 285-287 | + | | 285-287 C |
|} | |} | ||
| − | == | + | ==Resources and Citations== |
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* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | ||
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* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 4796 | * ''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 | + | * Wikipedia: http://en.wikipedia.org/wiki/Hydroquinone (Accessed Mar. 20, 2006) |
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998 | * ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998 | ||
Latest revision as of 13:34, 14 September 2022
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.
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