Fuchsine

Fuchsine

Solid basic fuchsine Basic fuchsine in aqueous solution
Names
IUPAC name 4-[(4-Aminophenyl)-(4-imino-1-cyclohexa-2,5-dienylidene)methyl]aniline hydrochloride
Identifiers
CAS Number	632-99-5 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:87665 Y
ChEMBL	ChEMBL1979636 Y
ChemSpider	10468578 Y
ECHA InfoCard	100.010.173
EC Number	209-321-2
KEGG	C19252
PubChem CID	12447
RTECS number	8053-09-6
UNII	8UUC89LHB2 Y
CompTox Dashboard (EPA)	DTXSID6021246
InChI InChI=1S/C20H19N3.ClH/c1-13-12-16(6-11-19(13)23)20(14-2-7-17(21)8-3-14)15-4-9-18(22)10-5-15;/h2-12,21H,22-23H2,1H3;1H/b20-14-,21-17?; N Key: NIKFYOSELWJIOF-SVFFXJIWSA-N N InChI=1/C20H19N3.ClH/c1-13-12-16(6-11-19(13)23)20(14-2-7-17(21)8-3-14)15-4-9-18(22)10-5-15;/h2-12,21H,22-23H2,1H3;1H/b20-14-,21-17?; Key: NIKFYOSELWJIOF-SVFFXJIWBQ
SMILES [Cl-].[NH2+]=C\1/C=C\C(C=C/1)=C(\c2ccc(N)c(C)c2)c3ccc(N)cc3
Properties
Chemical formula	C20H19N3·HCl
Molar mass	337.86 g/mol (hydrochloride)
Appearance	Dark green powder
Melting point	200 °C (392 °F; 473 K)
Solubility in water	2650 mg/L (25 °C (77 °F))
log P	2.920
Vapor pressure	7.49×10−10 mmHg (25 °C)
Henry's law constant (kH)	2.28×10−15 atm⋅m3/mole (25 °C)
Atmospheric OH rate constant	4.75×10−10 cm3/molecule⋅sec (25 °C)
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Ingestion, inhalation, skin and eye contact, combustible at high temperature, slightly explosive around open flames and sparks.
NFPA 704 (fire diamond)	2 1 0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Fuchsine (sometimes spelled fuchsin) or rosaniline hydrochloride is a magenta dye with chemical formula C₂₀H₁₉N₃·HCl.^[1][2] There are other similar chemical formulations of products sold as fuchsine, and several dozen other synonyms of this molecule.^[1]

It becomes magenta when dissolved in water; as a solid, it forms dark green crystals. As well as dying textiles, fuchsine is used to stain bacteria and sometimes as a disinfectant. In the literature of biological stains the name of this dye is frequently misspelled, with omission of the terminal -e, which indicates an amine.^[3] American and English dictionaries (Webster's, Oxford, Chambers, etc.) give the correct spelling, which is also used in the literature of industrial dyeing.^[4] It is well established that production of fuchsine results in development of bladder cancers by production workers. Production of magenta is listed as a circumstance known to result in cancer.^[5]