Pigment Green 18 Property

Melting point:

158-160°C

Boiling point:

520.91°C (rough estimate)

Density 

1.0448 (rough estimate)

refractive index 

1.5940 (estimate)

storage temp. 

Refrigerator

solubility 

Very soluble in water; soluble in ethanol, methanol, amyl alcohol

Colour Index 

42000

pka

6.90(at 25℃)

form 

Solid

color 

Brown

PH Range

0(green)-2(green-blue)

λmax

615nm, 425nm

BRN 

3580148

Stability:

Stable. Substances to be avoided include strong oxidizing agents.

Biological Applications

Antiseptic formulation; detecting nucleic acids; early diagnosis of tuberculosis; identifying mammal genes; treating cancers,fungal diseases,pulmonary tuberculosis; medical device

Major Application

Photoresists, color filter, printed circuit board, sol-gel matrix, liquid crystal displays, decoder system, inks, highlighters, herbicides, disinfectants, cosmetics, identifying mammal genes, detecting nucleic acids, mycobacterial growth, radiochemotherapy, wound dressing materials, antitumor agents, treatment of patients with pulmonary tuberculosis Malachite Green

InChIKey

FDZZZRQASAIRJF-UHFFFAOYSA-M

LogP

0.620

CAS DataBase Reference

569-64-2

EPA Substance Registry System

Malachite green (569-64-2)

Safety

Hazard Codes 

Xn,N

Risk Statements 

22-41-50/53-63

Safety Statements 

26-36/37/39-46-60-61-39-36/37

RIDADR 

UN 2811 6.1/PG 3

WGK Germany 

3

RTECS 

BQ1190000

HazardClass 

9

PackingGroup 

III

HS Code 

29215900

Hazardous Substances Data

569-64-2(Hazardous Substances Data)

Toxicity

LD50 oral in mouse: 80mg/kg

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H302Harmful if swallowed

H318Causes serious eye damage

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P201Obtain special instructions before use.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

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.

Pigment Green 18 Chemical Properties,Usage,Production

Chemical Properties

Green crystals. Soluble in water; ethyl, methyl, and amyl alcohol.

Uses

A triphenylmethane dye with fungicidal and limited antiseptic activity. The term Malachine green applies to the oxalate as well as the chloride. Harmful if swallowed. Avoid release to the environment.

Definition

ChEBI: An organic chloride salt that is the monochloride salt of malachite green cation. Used as a green-coloured dye, as a counter-stain in histology, and for its anti-fungal properties in aquaculture.

Preparation

commonly known as Malachite Green. (a) in the presence of hydrochloric acid or sulfuric acid, Benzaldehyde ?(1 Moore) and N,N-dimethylaniline(2 Moore) condensation, and then used lamps and acid oxidation its products; (b) N,N-dimethylaniline and 1-(Trichloromethyl)benzene?heating.

General Description

Green crystals with metallic luster. Water solutions are blue-green. Used in dyeing silk, wool, biological staining, etc.

Air & Water Reactions

Very soluble in water.

Reactivity Profile

Pigment Green 18 neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.

Hazard

Toxic by ingestion.

Properties and Applications

bright blue light green. Green belt flash crystallization. Soluble in cold water and hot water are blue-green, easily soluble in ethanol are blue-green. The strong sulfuric acid for yellow, diluted into dark orange; In nitric acid to orange, diluted into orange brown. The dye solution to join sodium hydroxide formation microstrip green white precipitation; Add hydrochloric acid to red light yellow. Used in acrylic, silk, wool, vinegar fiber dyeing, also used in leather, hemp, bamboo, wood, paper, shading, also used in the manufacture color amylum, solvent dye