PARAROSANILINE HYDROCHLORIDE

Calcozine Magenta N Fuchsine DR 001 Fuchsine SP Fuchsine SPC Orient Para Magenta Base Parafuchsin Parafuchsine Pararosaniline Pararosaniline chloride Pararosaniline hydrochloride / -Fuchsin / -Fuchsine p-Rosaniline hydrochloride 

Solubility Soluble in water, ethanol insoluble in ether 

Staining Applications Cytokines antigen-specific antibody leukocytes nuclei nucleic acids parasites precancerous cells prions hairs kera-tine fibers  

Biological Applications Detecting breast cancer treating pathogens  

Industrial Applications Optical waveguides semiconductor materials nanoparticles inks highlighters toner textiles wood  

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In the preparation of commercial fuchsine aniline is heated with a mixture of ortho and para toluidine. p-Toluidine is oxidized to the aminoaldehyde which condenses with one molecule of both aniline and o-toluidine to form homorosaniline hydrochloride- At the same time there is also formed pararosaniline hydrochloride owing to the reaction of two molecules of aniline with the aldehyde. The differences in the structure of leuco base, color base, and dye are shown by comparison of their respective formulas (1), (2), and (3). 

CAS 569-61-9. Amixtureof three parts pararosani-line acetate and one part pararosaniline hydrochloride. 

In strongly acidic media, pararosaniline (hydrochloride) exists as a colourless species. The reaction of colourless pararosaniline with hydroxymethanesulphonic acid gives a purple compound which is the basis of this sensitive spectrophotometric method for determining SO2, sulphite, or any other form of sulphur converted into SO2 [21-24]. The coloured reaction product has the formula ... 

Fuchsin fyuk-son, - Sen [F fuchsine, prob. fr. NL Fuchsia fr. its color] (1865) n. Synthetic rosaniline dyestuff, a mixture of rosaniline and pararosaniline hydrochlorides. Dark green powder of greenish crystals with a bronze luster faint odor. Soluble in water and alcohol. Used in textile and leather industries as a red dye and as a pharmaceutical. Vigo TL (1994) Textile processing, dyeing, finishing, and performance. Elsevier Science, New York. 

The adduct formed is then reacted with uncolored organic pararosaniline hydrochloride to produce a red-violet dye that is measured spectrophotometrically. 

Pararosaniline hydrochloride Basic fuchsin C19H18CIN3 569-61-9 323.819 pale viol pow 269 dec ... 

Rosaniline or magenta was originally obtained by oxidising with arsenic acid a mixture of aniline with 0- and />-toluidine. The product was then lixiviated and treated with common salt, which converted the ai senate into the hydrochloride of rosaniline. Pararosaniline was prepared in a similar way fiom a niixtuie of aniline and /-toluidine. The series... 

Free formaldehyde is reacted with acetylacetone in the presence of an excess of an ammonium salt to form the yellow fluorescent compound, 3,5-diacetyl-1,4-dihydrolutidine and subsequently determined spectrophotometrically in methods A-E (14). In these methods, the test sample must be colorless and free from other carbonyl compounds. Some other derivatives have been used to analyze formaldehyde. For example, formaldehyde was reacted with sodium 4,5-dihydroxy-2,7-naphthalene disulfonate in sulfuric acid solution to yield a purple color (580 nm) and then subjected to colorimetric analysis. A purple-colored pararosaniline derivative was used to analyze formaldehyde in air (15). Air sample was passed through an aqueous solution which contained 0.4% of 3-methyl-2-benzothiazolone hydrazone hydrochloride and then a dye produced was determined at 635 or 670 nm (16). Molecular sieve (1.6 mm pettet) was used to trap formaldehyde in air samples. The formaldehyde... 

PARAROSANILINE CHLORIDE PAR3ROSANTL-INE HYDROCHLORIDE p-ROSANIUNE HCL SCHULTZ-TAB No. 779 (GERMAN) 4,4 4"-TRlAMINO-TRIPHENYLMETHAN-HYDROCHLORID (GERMAN)... 

The synthesis of pararosaniline (from paranitrobenzaldehyde, c.) [14, 15, 17, 18] has until now not been carried out on a large scale, but it may be expected that in course of time the technical diflSculties which stand in the way of these processes will be overcome. Recently pararosaniline has been manufactured by a synthetic process based on the following lines. Anhydroform-iildehydeaniline, obtained by action of formaldehyde on aniline, is heated with aniline and aniline hydrochloride, whereby diamido-(liphenylmethane is formed. This latter compound, on heating with aniline, aniline hydrochloride, and an oxidising agent yields pararosaniline. 

Air Drawing of air through impinger containing water addition of pararosaniline (PRA) hydrochloride, sodium sulfite, and equilibration for 60 minutes at room temperature. Absorbance at 570 nm No data 9L9 6.9 Petreas et al. 1986... 

Rosaniline is the color-base of magenta. The hydrochloride of the base is generally called magenta or fuchsine, although the acetate is also used under these names. Rosaniline is manufactured by ojddizing a mixture of aniline, o-toluidine, and p-toluidine, with arsenic acid, mercuric nitrate, or nitrobenzene. The reaction is analogous to that which takes place in the preparation of pararosaniline, of which rosaniline is a methyl derivative with the structure indicated by the following formula —... 

Hexamethyl p-rosaniline chloride Hexamethyl p-rosaniline hydrochloride Hexamethyl violet Methyirosaniline chloride Methyl violet Pararosaniline, N,N,N, N, N",N -hexamethyl-, chloride... 

Pararosaniline Rosaniline Rosaniline hydrochloride Rosanilinium chloride... 

Pararosaniline. See Basic violet 14 Pararosaniline chloride. See p-Rosaniline hydrochloride... 

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