Pinaverdol (1,1 ′, 6-trimethylisocyanine iodide) is an organic compound derived from ethyl red , a methine dye with the chemical formula C 22 H 21 IN 2 . It was used in photography as an optical sensitizer , but quickly lost its practical significance.
| Pinoverdol | |
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| Chem. formula | C 22 H 21 IN 2 |
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Trade names: sensitol green ( Great Britain, Ilford ), chlorochrom [3] .
Content
- 1 Physical and chemical properties
- 2 Getting
- 3 Application
- 4 Biological role
- 5 notes
- 6 Literature
Physical and chemical properties
Green crystals of the monoclinic system have the form of pleochroic prisms, with a metallic sheen from copper-yellow to bronze-violet. The crude reagent has the form of blue-black crystals [3] [4] .
The spectrum has absorption maxima at 522 and 562 nm. It exceeded ethyl red in sensitizing ability, sensitizing photographic emulsions in the range up to 650 nm, with maxima at 535 and 583 nm and minima at 500 and 558 nm [5] [3] .
Getting
Obtained by the reaction of methyl iodides of 2,6-dimethylquinoline and quinoline with an alkali with an alcohol solution with a total reaction yield of 13.14% [3] [4] .
Application
It was used as a sensitizer for the green region of the spectrum. For this purpose, water – alcohol solutions with a dye concentration of 1: 50,000 were used [6] .
Biological role
It was found that pinaverdol is a very good antiseptic against E. coli [7] .
Notes
- ↑ 1 2 PubChem
- ↑ 1 2 http://pubchem.ncbi.nlm.nih.gov/compound/5748542
- ↑ 1 2 3 4 Glafkides, 1958 , p. 790-791.
- ↑ 1 2 Wise, 1919 .
- ↑ Venkataraman, 1957 , p. 1312.
- ↑ Joffe, 1929 , p. 334.
- ↑ Doja, 1932 , p. 285.
Literature
- Venkataraman K. Chemistry of synthetic dyes. - L .: State Scientific and Technical Publishing House of Chemical Literature, 1957. - T. 2.
- Technique of a physical experiment / ed. Ioffe A. F. - M., L .: State Publishing House, 1929.
- Doja MQ The cyanine dyes (Eng.) // Chemical Reviews: Journal. - 1932. - Issue. 11 . - No. 3 . - S. 273—321 . - DOI : 10.1021 / cr60040a001 .
- Glafkides P. Photographic chemistry. - London: Fountain Press, 1958.- T. 2.
- Wise LE, Adams EQ, Steward JK, Lund CH Synthesis of photosensitizing dyes: pinaverdol and pinacyanol (Eng.) // The journal of industrial and engineering chemistry: journal. - 1919. - Issue. 11 . - No. 5 . - S. 460-463 . - DOI : 10.1021 / ie50113a026 .