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Gentian Violet USP Crystal Violet Gentian Violet Manufacturers
For MSDS Sheet Click Gentian Violet Methylrosanilinium Chloride USP BP IP Manufacturers MSDS
Gentian Violet Methylrosanilinium Chloride
Molecular formula: C25H30ClN3
Molecular Weight: 407.98
CAS No.: 548-62-9
EINECS EC Number: 208-953-6
Synonyms: Basic violet 3 (C.I. 42555); N-{4-{Bis-[4-(diethylamino)-phenyl]-methylene}-2,5-cyclohexadien-1-ylidene}-N-methylmethanaminium
chloride; Crystal violet; Hexamethylpararosaniline chloride; Hexamethyl
violet; Methyl violet.
Methanaminium,
N-[4-[bis[4-(dimethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]-Nmethyl-,chloride.
[4-[Bis[p-(dimethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]dimethylammonium
chloride.
Gentian Violet contains not less than 96.0 percent and not more than 100.5 percent of gentian violet (C25H30ClN3), calculated on the anhydrous basis.
Chromatographic Purity: 96-101%
Water: Not more than 7.5%.
Residue on ignition: Not more than 1.5%.
Alcohol-insoluble substances— Not more than 1.0% of insoluble
residue remains.
Arsenic— The limit is 0.001%.
Lead—The limit is 0.003%.
Zinc— Not more than 0.05%.
Gentian Violet USP; Crystal Violet
Gentian Violet USP
C25H30ClN3 407.98
Methanaminium,
N-[4-[bis[4-(dimethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]-Nmethyl-,chloride.
C. I. Basic violet 3.
[4-[Bis[p-(dimethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]dimethylammonium
chloride [548-62-9].
Gentian Violet contains not less than 96.0 percent and not more than 100.5 percent of gentian violet (C25H30ClN3), calculated on the anhydrous basis.
Identification—
A:
Sprinkle about 1 mg on 1 mL of sulfuric
acid: it dissolves in the acid with an orange or brown red color. When this solution is diluted cautiously with water,
the color changes to brown, then to green, and finally to blue.
B: Dissolve about 20 mg in 10
mL of
water, and add 5 drops of hydrochloric acid. To 5 mL
of this solution add tannic acid TS drop wise: a
deep blue precipitate is formed.
C: To the remainder of the solution prepared for
Identification
test B add about 500 mg of zinc dust, and warm the mixture: rapid
de-colorization occurs. Place a drop of the
decolorized solution adjacent to a drop of 6 N
ammonium hydroxide on a filter paper: a blue color is produced at the zone
of contact.
Water: not more than 7.5%.
Residue on ignition: not more than 1.5%.
Alcohol-insoluble substances— Boil 1.0 g, accurately weighed, with 50
mL of alcohol under a reflux condenser for 15
minutes, filter through a tarred filtering
crucible, wash the residue on the filter with hot alcohol until the last
washing is not colored violet, and dry the crucible at 105 for 1 hour: not
more than 1.0% of insoluble residue remains.
Arsenic— The limit is 0.001%.
Lead—The limit is 0.003%.
Zinc—
Zinc standard stock solution—
Transfer about 1 g of zinc, accurately
weighed, to a 1000-mL volumetric flask, add 50 mL
of nitric acid, and mix to dissolve. Dilute with water to volume,
and mix.
Standard preparation— Dilute the
Zinc standard stock solution with water to obtain a Standard preparation
containing 0.50 Ag of
zinc per mL.
Test preparation— Weigh accurately 0.50 g of Gentian Violet in a
suitable tarred crucible. Place in a
low-temperature plasma ashing apparatus, and ash until a constant weight is
attained. Pipette 10 mL of 6 N nitric acid into the crucible, and heat to
dissolve the ash. Transfer the solution to a 500-mL volumetric flask,
dilute with water to volume, and mix. Prepare a reagent blank.
Procedure—
Concomitantly determine the absorbance
of the Standard preparation, the Test preparation, and the
reagent blank at the zinc emission line at 213.9 nm, with a suitable atomic
absorption spectrophotometer (see Spectrophotometry
and Light-Scattering 851 ) equipped with a
zinc lamp and an air–acetylene flame, using water as the blank. The
absorbance of the Test preparation, corrected for that of the reagent
blank, is not greater than the absorbance of the Standard preparation,
similarly corrected (0.05%).
Chromatographic purity— Dissolve 10 mg in 10
mL
of methanol to obtain the Test solution. Transfer 1.0
mL of Test solution to a 100-mL
volumetric flask, dilute with methanol to volume, and mix (Diluted test
solution). Apply 5 AL each of the Test solution and the Diluted test solution
to a suitable thin-layer chromatographic plate
(see Chromatography 621 ) coated with a
0.25-mm layer of octadecylsilanized
chromatographic silica gel. Allow the spots to dry, and develop the
chromatogram in a suitable chromatographic chamber with a solvent system
consisting of the upper layer separated from a well-shaken mixture of water,
butyl alcohol, and glacial acetic acid (100:80:20), until the solvent front
has moved about three-fourths of the length of the plate. Remove the plate
from the chamber, allow the solvent to evaporate, and visually locate the
spots on the plate: the Test solution exhibits a principal spot and
not more than one secondary spot which, if present in the chromatogram from
the Test solution, is not more intense
than the principal spot obtained from the Diluted test solution (1.0%).
Assay—
Transfer about 400 mg of Gentian Violet, accurately weighed, to a
300-mL conical flask, add 25 mL of water and 10
mL of hydrochloric acid,
displace the air in the flask with carbon dioxide, and pass a stream of
carbon dioxide through the flask during the assay. Add 50.0
mL of 0.1 N titanium trichloride VS, heat to boiling, and boil gently for 10 minutes,
swirling the liquid occasionally. Cool the solution, add 5
mL of ammonium thiocyanate
solution (1 in 10), and titrate with 0.1 N ferric ammonium sulfate VS until
a faint red color is produced. Perform a blank determination (see Residual Titrations
541 ). Each
mL of 0.1 N titanium
trichloride is equivalent to 20.40 mg of
C25H30ClN3.
Gentian Violet is also called Crystal Violet or Basic Violet #3, Methylrosanilinium Chloride that’s the name in BP, Ph. Eur. and Hexamethyl-p-Rosaniline Chloride.
IUPAC Name is 4-[(4-dimethylaminophenyl)-phenyl-methyl]-N,N-dimethyl-aniline
Gentian Violet USP Methylrosanilininium Chloride Manufacturers:
MUBY CHEMICALS GROUP
DONGRI-CHINCHBUNDER, MUMBAI 400009, INDIA
TEL: (OFFICE)
91-22-23770100, 91-22-23726950, 91-22-23774610, 23723564.
e-mail: info@mubychem.com
Gentian Violet USP, Gentian Violet Manufacturers, Crystal Violet Manufacturers, Basic Violet Manufacturers
Gentian Violet ( CAS No, 548-62-9;
603-47-4)
Basic
violet 3 (C.I. 42555)
Methylrosanilinium chloride
N-{4-{Bis-[4-(diethylamino)-phenyl]-methylene}-2,5-cyclohexadien-1-ylidene}-N-methylmethanaminium
chloride
C.I. 42555
Crystal violet
Gentian violet (C.I. 42555)
Hexamethylpararosaniline chloride
Hexamethyl violet
Methyl violet
Global or International Gentian Violet or Crystal Violet or Methylrosanilinium Chloride USP BP Ph Eur Suppliers, Exporters, Importers, Manufacturers