Pigment Green 18

Synonym(s):Fast Green;Light Green

CAS NO.：569-64-2
Empirical Formula: C23H25N2.Cl
Molecular Weight: 364.91
MDL number: MFCD00011751
EINECS: 209-322-8
SAFETY DATA SHEET (SDS)
Update Date: 2024-12-18 13:37:16

What is Pigment Green 18?

Chemical properties

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

The Uses of Pigment Green 18

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

Standard	Light Fastness	Persperation Fastness		Ironing Fastness		Soaping
Standard	Light Fastness	Fading	Stain	Fading	Stain	Fading	Stain
ISO	3	4-5	4-5	4	5	4-5	4-5
AATCC	2-3

Properties of Pigment Green 18

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	Solubility Very soluble in water; soluble in ethanol, methanol, amyl alcohol
form	Solid
pka	6.90(at 25℃)
Colour Index	42000
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
CAS DataBase Reference	569-64-2
EPA Substance Registry System	Malachite green (569-64-2)

Safety information for Pigment Green 18

Signal word	Danger
Pictogram(s)	Corrosion Corrosives GHS05 Exclamation Mark Irritant GHS07 Health Hazard GHS08 Environment GHS09
GHS Hazard Statements	H302:Acute toxicity,oral H318:Serious eye damage/eye irritation H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P201:Obtain special instructions before use. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P308+P313:IF exposed or concerned: Get medical advice/attention.