METHYL GREEN

Synonyms. Methyl Green; C.I. 42590; Ethyl Green; 4-((4-(Dimethylamino)phenyl)(4-(dimethyliminio) cyclohexa-2,5-dien-1- ylidene) methyl)-N-ethyl-N,N-dimethylanilinium bromide chloride zinc chloride; Methyl Green, zinc chloride salt;

METHYL GREEN (Base)

Click for original image

 

PRODUCT IDENTIFICATION

CAS RN

7114-03-6

EINECS RN

230-415-4

FORMULA

C27H35BrClN3·ZnCl2

MOLE WEIGHT

653.24

H.S CODE

 3204.19.4000

SMILES

 [ClH-].[ClH-].CC[N+](C)(C)c1ccc(cc1)\C(c1ccc(cc1) N(C)C)=C1\C=C\C (C=C1)=[N+](/C)C.Cl[Zn]Cl

CLASSIFICATION

Coloring agent

EXTRA NOTES

This product may be a mixture of monobromo, monochloro and dichloro ZnCl2 salts.
Visible transition interval: pH 1 (yellow), pH 2 (green), ≥pH 3 (blue)

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE.

dark green powder

MELTING POINT

〉300 C

BOILING POINT

 

DENSITY

 

SOLUBILITY IN WATER

Soluble

SOLVENT SOLUBILITY

 

VAPOR DENSITY

 

log P(octanol-water)

  

VAPOR PRESSURE

  

AUTOIGNITION TEMP

  
pK

 

REFRACTIVE INDEX

 

FLASH POINT

 

 

STABILITY AND REACTIVITY
STABILITY Stable under normal conditions.

INCOMPATIBLE MATERIALS

Strong oxidizing agents

POLYMERIZATION

Has not been reported

NFPA RATINGS

Health: 1, Flammability: 0, Reactivity: 0

 

EXTERNAL LINKS & GENERAL DESCRIPTION

USA.gov - Methyl Green

Wikipedia Linking - Ethylgrün

Google Scholar Search - Methyl Green

Drug Information Portal (U.S. National Library of Medicine) - Methyl Green

PubChem Compound Summary - Methyl Green

KEGG (Kyoto Encyclopedia of Genes and Genomes) -  Methyl Green

http://www.ncbi.nlm.nih.gov/ -  Methyl Green

Material Safety Data Sheet - Methyl Green

http://www.sigmaaldrich.com/
A typical working concentration for using methyl green as a counter stain is 0.1-0.5%. A procedure for staining animal tissue for nucleoli and cytoplasmic granules of liver cells, differentiating cytoplasmic and nucleolar basophilia from chromatin has been published. The use of bismarck brown with methyl green for staining mucin, cartilage and goblet cells in embryonic, trachea or intestinal tissue has been published. A procedure for the use of acidulated methyl green (in 1% acetic acid) for staining chromatin in temporary preparations of protozoans has been published. The use of methyl green in glycerin-jelly to show exine of pollen-grain has been published. A discussion of Albert's Stain for diptheria organisms (only fair staining for cytoplasmic barring) has been published.

 

SALES SPECIFICATION

APPEARANCE

dark green powder

DYE CONTENT

70% min

LOSS ON DRYING

 10 max

 

TRANSPORT & REGULATORY INFORMATION

UN NO.

 

HAZARD CLASS

 

PACKING GROUP  

 

SAFETY INFORMATION

HAZARD OVERVIEW

OSHA Hazards: Irritant. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

SIGNAL WORD Warning

PICTOGRAMS

HAZARD STATEMENTS

H315-H319-H335

P STATEMENTS

P261-P305 + P351 + P338

EC DIRECTIVES

 

HAZARD CODES

RISK PHRASES

36/37/38

SAFETY PHRASES

26-36

 

PACKING

Preserve in light-resistant and well-closed containers