Brilliant green (dye)
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| Other names
Malachite green G, Emerald green, Solid green JJO, Diamond green G, Aniline green, Benzaldehyde green, Fast green J | |
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| ChemSpider | |
| ECHA InfoCard | 100.010.174 |
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| Properties | |
| C27H33N2.HO4S | |
| Molar mass | 482.64 g/mol |
| Melting point | 210 °C (410 °F; 483 K) (decomposes) |
| 100 g/L a 20 °C | |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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| Infobox references | |
Brilliant green is one of the triarylmethane dyes. It is closely related to malachite green.[1]
Uses
Brilliant green has been used to color silk and wool.
In Eastern Europe and Russia (and formerly the USSR) the dilute alcoholic solution of brilliant green is sold as a topical antiseptic, also known under a Latin name Viridis nitentis spirituosa and a Russian colloquial name зелёнка [zelyonka, lit. an informal colloquialism for "the green"].[2]
Brilliant green is effective against Gram-positive bacteria. The main advantage of brilliant green over the more common antiseptics such as iodine is that it does not irritate mucous membranes as harshly on accidental contact (Soviet medical doctrine deemed it "not for use on mucosa" and cautions that it can cause eye damage and ophthalmic chemical burns, at least in the typical formulations produced for medical use).
Safety and toxicity
Brilliant green induces vomiting when swallowed and is toxic when ingested.[3] The compound may lead to serious injuries if it comes to contact with the eye, even result in bilateral blindness due to corneal opacification.[4]
Politics
In Eastern European countries, especially in Russia, it is used to physically attack political opponents, see Zelyonka attack. Since 2016, many opponents of the Russian government of Vladimir Putin have been splashed with zelyonka, including Alexei Navalny, Igor Kalyapin, liberal journalists, Nadya Tolokonnikova, Maria Alekhina, Lyudmila Ulitskaya, Ilya Varlamov and Mikhail Kasyanov.[5]
References
- ↑ Gessner, T.; Mayer, U. (2002), "Triarylmethane and Diarylmethane Dyes", Ullmann's Encyclopedia of Industrial Chemistry 6th Edition, Weinheim: Wiley-VCH, ISBN 3527306730, doi:10.1002/14356007.a27_179
- ↑ Balabanova, Maria; Popova, Liudmila; Tchipeva, Rositsa (2004). "Dyes in dermatology". Disease-a-Month. 50 (6): 270. doi:10.1016/j.disamonth.2004.05.002.
- ↑ Narat, J. K. (1931). "Brilliant Green: A Clinical Study of Its Value As a Local Antiseptic". Annals of Surgery. 94 (6): 1007–1012. PMC 1391517
. - ↑ CID 12449 from PubChem
- ↑ "Why are Russian opposition leaders’ faces turning green?". The Economist. May 10, 2017. Retrieved May 11, 2017.