Basic Violet 2 Property

Boiling point:

300℃[at 101 325 Pa]

Density 

0.692[at 20℃]

vapor pressure 

0Pa at 25℃

storage temp. 

Store at +5°C to +30°C.

solubility 

10g/l

form 

Crystals or Crystalline Powder

Colour Index 

42520

color 

Dark green

PH

3-4 (10g/l, H2O, 20℃)

Water Solubility 

20g/L

BRN 

8740867

Stability:

Stable. Incompatible with strong oxidizing agents.

LogP

1.537

CAS DataBase Reference

3248-91-7(CAS DataBase Reference)

EPA Substance Registry System

Benzenamine, 4,4'-[(4-imino-3-methyl-2,5-cyclohexadien-1-ylidene)methylene]bis[2-methyl-, hydrochloride (1:1) (3248-91-7)

Safety

Hazard Codes 

Xn,Xi,N,T

Risk Statements 

36/37/38-40-36-50/53

Safety Statements 

26-36/37-24/25-61-60

RIDADR 

UN 3077 9 / PGIII

WGK Germany 

3

RTECS 

CX9825000

HS Code 

32041300

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

H350May cause cancer

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P201Obtain special instructions before use.

P202Do not handle until all safety precautions have been read and understood.

P273Avoid release to the environment.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P308+P313IF exposed or concerned: Get medical advice/attention.

Basic Violet 2 Chemical Properties,Usage,Production

Chemical Properties

solid

Uses

Textiles and leather industries, red dye, pharmaceutical.

Definition

ChEBI: A hydrochloride that is the monohydrochloride of 4-[(4-aminophenyl)(4-iminocyclohexa-2,5-dien-1-ylidene)methyl]-2-methylaniline. One of the minor constituents of Basic fuchsin, together with pararosanilin, rosanilin and magenta II.

Preparation

Commonly known as the New Magenta. 4 – (4-Amino-3-methylbenzyl)-2-methylbenzenamine with O-Methylaniline its hydrochloride salt is heated in the presence of an oxidizing agent.

General Description

The dry dye New fuchsin (C.I. 42520) for microscopy Certistain^?, is used for the preparation of a staining solution that can be used for staining of histological tissue sections or other samples of human origin according to Ziehl-Neelsen, Gram staining as well as in combination with Schiff′s reagent. As a Certistain^? dye it is chemically quality-certified according to highest standards and strict specifications. New fuchsin belongs to the group of triaminotriphenylmethane dyes.
The dye is used in Ziehl-Neelsen and Gram staining as well as for methods with Schiff′s reagent.
The cell wall of acid-fast bacteria (AFB) has a high proportion of wax and lipids and hence absorbs dyes only very slowly. As a measure to enhance the absorption of the fuchsin dye and thus the formation of the mycolate-fuchsin complex in the cell wall, the carbolfuchsin solution applied to the specimen is normally heated to evaporation point. If the Kinyoun carbolfuchsin solution is used, the heating of the solution is dispensable. Consequently, the release of hazardous phenolic vapors will be avoided.
Once the AFB have absorbed the fuchsin dye, it is virtually impossible to decolorize them again, even when they are intensively treated with a decolorizing solution such as e. g. hydrochloric acid in ethanol. Accordingly, AFB are termed as acid- and alcohol-fast for staining, and are stained red in the microscopic visualization. Correspondingly, all non-acid-fast microorganisms are counterstained with an appropriate dye.
Pretreatment of the specimens with Sputofluol? dissolves the bacteria from the surrounding viscid sputum and cell material. Sputofluol^? also has a disinfectant effect, with the result that any microorganisms that are present are killed off. It is registered as IVD and certified as CE product. For more details, please see instructions for use (IFU). The IFU can be downloaded from this webpage.

Hazard

Possible carcinogen.

Flammability and Explosibility

Not classified

Properties and Applications

dark red light purple. Soluble in water and ethanol is red. The strong sulfuric acid for yellow until golden brown, diluted into light yellow. Dyes to join sodium hydroxide solution appears orange brown precipitation.