Acid Green 50

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

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)

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.

MSDS Information

Provider	Language
[4-[4-(Dimethylamino)-alpha-(2-hydroxy-3,6-disulphonato-1-naphthyl)benzylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium inner salt sodium salt	English
SigmaAldrich	English
ACROS	English

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
Standard	Light Fastness	Fading	Stain	Persperation Fastness	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 50 Preparation Products And Raw materials

Raw materials

Disodium 2-naphthol-3,6-disulfonate-->4,4'-Bis(dimethylamino)benzhydrol-->2-Naphthol-6,8-disulfonic acid-->4-(dichloro(4-(dimethylamino)phenyl)methyl)-N,N-dimethylbenzenamine-->2-Naphthol

2-PROPENYLPHENOL 1-METHYL-2-NAPHTHOL Ethyl 2-(Chlorosulfonyl)acetate COTTON WOOL GREEN TEA 3-Hydroxynaphthalene-2,7-disulphonic acid LIGHT GREEN SF YELLOWISH Acid Green 50 3-Dimethylaminopropylamine Folic acid 1-ETHYLNAPHTHALENE 1-VINYLNAPHTHALENE 3-ETHYLBENZENESULFONIC ACID PHENOLSULFONIC ACID 6-Hydroxynaphthalene-2-sulphonic acid Sodium 6-hydroxynaphthalene-2-sulfonate Diethylstilbestrol Citric acid

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Acid Green 50

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