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P3750

Sigma-Aldrich

Pararosaniline hydrochloride

>85.0% (HPLC)

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Synonym(s):
Basic Fuchsin, Basic Parafuchsin, Basic Red 9, Magenta O, Parafuchsin hydrochloride, Paramagenta hydrochloride, Pararosaniline chloride
Linear Formula:
C19H18N3Cl
CAS Number:
Molecular Weight:
323.82
Colour Index Number:
42500
Beilstein:
4164603
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47

Quality Level

Assay

>85.0% (HPLC)

form

powder

color

metallic green

mp

268-270 °C

solubility

ethanol: 1 mg/mL

εmax

≥17000 at 286-292 nm in 50% ethanol at 0.003 g/L
≥80000 at 543-549 nm in 50% ethanol at 0.003 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Cl.Nc1ccc(cc1)C(\c2ccc(N)cc2)=C3/C=CC(=N)C=C3

InChI

1S/C19H17N3.ClH/c20-16-7-1-13(2-8-16)19(14-3-9-17(21)10-4-14)15-5-11-18(22)12-6-15;/h1-12,20H,21-22H2;1H

InChI key

JUQPZRLQQYSMEQ-UHFFFAOYSA-N

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This Item
857343P7632215945
Basic Fuchsin certified by the Biological Stain Commission, Dye content ≥88 %

Sigma-Aldrich

857343

Basic Fuchsin

Pararosaniline Base crystalline

Sigma-Aldrich

P7632

Pararosaniline Base

form

powder

form

powder

form

crystalline

form

solid

color

metallic green

color

-

color

purple

color

-

mp

268-270 °C

mp

268-270 °C (dec.) (lit.)

mp

205 °C (dec.) (lit.)

mp

203 °C (dec.) (lit.)

solubility

ethanol: 1 mg/mL

solubility

-

solubility

ethanol: 1 mg/mL, clear to hazy

solubility

95% ethanol: 0.1%

εmax

≥17000 at 286-292 nm in 50% ethanol at 0.003 g/L, ≥80000 at 543-549 nm in 50% ethanol at 0.003 g/L

εmax

-

εmax

-

εmax

-

General description

Pararosaniline is a cationic triarylmethane dye and one of the components of basic fuchsin. It gives a brilliant red color after dyeing polyacrylonitrile fibers.

Application

Pararosaniline hydrochloride has been used:
  • to prepare Schiff reagent
  • to stain cow endometrial cytology samples
  • to counterstain Prussian blue sections of mice brains

Other Notes

This is the pure, principal component of mixtures commonly referred to as Basic Fuchsin.

Legal Information

Magenta is a trademark of Merck KGaA, Darmstadt, Germany

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

Hazard Classifications

Carc. 1B

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Christopher Layton, John D. Bancroft
Bancroft's Theory and Practice of Histological Techniques,Expert Consult: Online and Print,7: Bancroft's Theory and Practice of Histological Techniques (2013)
Human Neural Stem Cell Biodistribution and Predicted Tumor Coverage by a Diffusible Therapeutic in a Mouse Glioma Model
Michael E. Barish
Stem Cells Translational Medicine (2017)
Maize Kernels ? Fixation in FAA, Embedding, Sectioning and Feulgen Staining
Ales Kladnik
Bio-protocol, 3(15) (2013)
Triarylmethane and Diarylmethane Dyes
Thomas Gessner and Udo Mayer
Ullmann's Encyclopedia of Industrial Chemistry (2000)
A novel cytologic sampling technique to diagnose subclinical endometritis and comparison of staining methods for endometrial cytology samples in dairy cows
O. B> Pascotini
Theriogenology (2015)

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