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69710

Sigma-Aldrich

Methyl violet

for microscopy (Bact., Bot., Hist.), indicator (pH 0.1-2.0), mixture of polymethylated pararosaniline hydrochlorides

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Synonym(s):
Methyl violet 2B, Basic Violet 1
CAS Number:
Colour Index Number:
42535
Beilstein:
8464808
MDL number:
PubChem Substance ID:
NACRES:
MA.02

grade

for microscopy (Bact., Bot., Hist.)
indicator (pH 0.1-2.0)

Quality Level

form

powder or crystals

pH

1-2

mp

137 °C (dec.) (lit.)

solubility

ethanol and water: 0.01 g/10 mL

εmax

≥1500 at 579-589 nm in 50% ethanol

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Cl.C\N=C1/C=C\C(C=C1)=C(/c2ccc(cc2)N(C)C)c3ccc(cc3)N(C)C

InChI

1S/C24H27N3.ClH/c1-25-21-12-6-18(7-13-21)24(19-8-14-22(15-9-19)26(2)3)20-10-16-23(17-11-20)27(4)5;/h6-17H,1-5H3;1H

InChI key

JFTBTTPUYRGXDG-UHFFFAOYSA-N

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This Item
228842P788495290
Methyl violet for microscopy (Bact., Bot., Hist.), indicator (pH 0.1-2.0), mixture of polymethylated pararosaniline hydrochlorides

Sigma-Aldrich

69710

Methyl violet

Ethyl Violet cationic triarylmethane dye

Sigma-Aldrich

228842

Ethyl Violet

Pyrocatechol Violet suitable for indicator

Sigma-Aldrich

P7884

Pyrocatechol Violet

Methyl Blue for microscopy (Bot., Hist.), indicator (pH 9.4-14.0)

Sigma-Aldrich

95290

Methyl Blue

form

powder or crystals

form

powder

form

powder

form

powder or crystals

pH

1-2

pH

-

pH

-

pH

9.4-14

mp

137 °C (dec.) (lit.)

mp

-

mp

185 °C (dec.) (lit.)

mp

-

solubility

ethanol and water: 0.01 g/10 mL

solubility

water: 1 mg/mL

solubility

water: 1 mg/mL

solubility

water: 0.01 g/10 mL, blue to very deep blue

εmax

≥1500 at 579-589 nm in 50% ethanol

εmax

-

εmax

-

εmax

≥200 at 310-320 nm, ≥400 at 595-605 nm

General description

Methyl violet is a triphenylmethane dye. It is a mixture of tetra-, penta-, and hexa- methyl pararosaniline.
Methyl Violet 2B is a mixture of polymethylated (4,5 and 6) pararosaniline chlorides

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 2 - Eye Dam. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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