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Acid Green 50

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Acid Green 50 Basic information

Product Name:
Acid Green 50
Synonyms:
  • LISSAMINE GREEN B
  • ACID GREEN 50
  • [4-[4-(dimethylamino)-alpha-(2-hydroxy-3,6-disulphonato-1-naphthyl)benzylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium inner salt sodium salt
  • WOOL GREEN S
  • 12078green
  • acidalwoolgreenbs
  • acidbrilliantgreenbs
  • AcidgreenBS
CAS:
3087-16-9
MF:
C27H27N2NaO7S2
MW:
578.63
EINECS:
221-409-2
Product Categories:
  • Dyes and Pigments
Mol File:
3087-16-9.mol
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Acid Green 50 Chemical Properties

Melting point:
>300°C
Density 
0.541[at 20℃]
storage temp. 
Refrigerator
solubility 
DMSO (Slightly), Methanol (Slightly)
form 
Powder
Colour Index 
44090
color 
Dark brown or black
Water Solubility 
492.554g/L at 28℃
Stability:
Incompatible with strong oxidizing agents.
LogP
0.595 at 25℃
CAS DataBase Reference
3087-16-9(CAS DataBase Reference)
EPA Substance Registry System
Methanaminium, N-[4-[[4-(dimethylamino)phenyl](2-hydroxy-3,6-disulfo-1-naphthalenyl)methylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, inner salt, monosodium salt (3087-16-9)
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Safety Information

Hazard Codes 
Xn
Risk Statements 
22-36/37/38
Safety Statements 
36/37/39
WGK Germany 
3
RTECS 
BQ1150000
HS Code 
32041200
Toxicity
rat,LD50,oral,2gm/kg (2000mg/kg),Scientia Pharmaceutica. Vol. 47, Pg. 39, 1979.
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Acid Green 50 Usage And Synthesis

Chemical Properties

solid

Uses

Acid Green 50 is a food coloring in drinks and candles. Also used on living cells as protein stains for chemical and molecular analyses.

Preparation

(a)4-(Dichloro(4-(dimethylamino)phenyl)methyl)-N,N-dimethylbenzenamine and Naphthalen-2-ol condensation, with hair smoke sulphonated sulfuric acid, and translated into sodium salt; (b) Bis (4 – (dimethylamino) phenyl) methanoland ?3-Hydroxynaphthalene-2,7-disulfonic acid (or 7-Hydroxynaphthalene-1,3-disulfonic acid) condensation, product oxidation, and translated into sodium salt.

Properties and Applications

blue light green. Blue-green powder. Soluble in cold water, easily soluble in hot water (green blue), soluble in ethanol (turquoise blue). Meet strong sulfuric acid as orange, a green light amber after diluted. Mainly used for wool, polyamide, silk dyeing. Also used in leather, food, medicine and cosmetics of shading.

Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 3 2 3 4 1 5 3 1
AATCC 2-3 3 3 2 1 1 3 3

Purification Methods

Crystallise it from EtOH/water (1:1, v/v). Irritant. [Beilstein 14 II 574.]

Acid Green 50Supplier

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