Quick Search
CAS: 3087-16-9
MF: C27H27N2NaO7S2
MW: 578.63
EINECS: 221-409-2
E 142 is a green synthetic coal tar triarylmethane dye with the molecular formula C27H25N2O7S2Na.
As a food dye, it has E number E142.
E 142 can be used in mint sauce, desserts, gravy granules, sweets, ice creams, and tinned peas.
E 142 is prohibited as a food additive in Canada, United States, Japan, and Norway.
E 142 is approved for use as a food additive in the EU and Australia and New Zealand.
E 142 is a vital dye, meaning it can be used to stain living cells.
E 142 is used in ophthalmology, along with fluorescein and rose bengal, to diagnose various disorders of the eye's surface, dry eyes for example.
E 142 tend to be brightly coloured.
Many produce reactions in response to acids or bases.
As a result, they are ofter used as pH indicators.
E 142 is artificial organic compounds.
They are all based on the compound E 142 which has the chemical formula (C6H5)3CH.
E 142 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)
E 142 is 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.
Uses
E 142 is a food coloring in drinks and candles.
Also used on living cells as protein stains for chemical and molecular analyses.
E 142 typical applications include beverages, confectionery, bakery, dairy fats and oil, meat, seafood, snacks, dry mixes and seasonings, fruit preparation, and convenient foods.
E 142is an anionic dye often used in textiles.
Research studies investigating the removal of E 142 by anodic oxidation and electrocoagulation have reported that these two methods may be useful for the removal of E 142 in wastewater treatment studies.
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.
Synonyms
Acid green 50
3087-16-9
Green S
Wool Green S
Lissamine Green B
Food Green S
Acid Leather Green S
Acid Brilliant Green BS
Lissamine Green BN
C.I. Acid Green 50
Calocid Green S
Hexacol Green S
Acilan Green BS
Calcocid Green S
Kiton Green S
Vondacid Green S
Brilliant Acid Green BS
Erio Green S
Water Green SX
Wool Green B
Calocid Green SB
Wool Green BS
Wool Green MS
Wool Green SG
Pharmacid Green S
Wool Green BSNA
Calcocid Green SB
Bucacid Wool Green
Hidacid Wool Green
Naphthazine Green S
Amacid Wool Green S
Edicol Supra Green B
Unitertracid Green BS
Acidal Wool Green BS
C.I. 44090
Edicol Supra Green BS
Sumitomo Wool Green S
Vert acide brilliant bs
CI 44090
12078 Green
Pontacyl Green Son and S
C.I. Food Green 4
Wool Green S (Biological Stain)
C.I. Acid Green 50, monosodium salt
9B7E8Y9D0X
Green BS
Wool Green 5
Sodium 4-((4-(dimethylamino)phenyl)(4-(dimethyliminio)cyclohexa-2,5-dien-1-ylidene)methyl)-3-hydroxynaphthalene-2,7-disulfonate
Zelen kysela BS [Czech]
Zelen kysela BS
Zelen kysela 50 [Czech]
Zelen kysela 50
Methanaminium, N-(4-((4-(dimethylamino)phenyl)(2-hydroxy-3,6-disulfo-1-naphthalenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-methyl-, inner salt, sodium salt (1:1)
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
sodium;4-[[4-(dimethylamino)phenyl]-(4-dimethylazaniumylidenecyclohexa-2,5-dien-1-ylidene)methyl]-3-hydroxynaphthalene-2,7-disulfonate
Schultz Nr. 836 [German]
CCRIS 1908
Zelen potravinarska 4 [Czech]
NSC-11237
NSC-71959
Zelen potravinarska 4
Schultz Nr. 836
Brilliantsaeure gruen BS [German]
Brilliantsaeure gruen BS
NCGC00166248-01
EINECS 221-409-2
NSC 11237
NSC 71959
UNII-9B7E8Y9D0X
E 142
Methanaminium, N-(4-((4-(dimethylamino)phenyl)(2-hydroxy-3,6-disulfo-1-napthalenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-methyl-, inner salt, monosodium salt
MFCD00012117
ACID GREEN BS
ACID GREEN RS
GREEN S [MI]
DSSTox_CID_26577
DSSTox_RID_81736
DSSTox_GSID_46577
Green S, analytical standard
SCHEMBL24354
Methanaminium, N-(4-((4-(dimethylamino)phenyl)(2-hydroxy-3,6-disulfo-1-naphthalenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-methyl-, hydroxide, inner salt, monosodium salt
SCHEMBL341870
ACID GREEN 50 [INCI]
CHEMBL2028349
DTXSID4046577
GREEN S (E 142)
CI 44090 [INCI]
Tox21_112374
AKOS015903470
AKOS024319596
Ammonium, (4-(p-(dimethylamino)-alpha-(2-hydroxy-3,6-disulfo-1-naphthyl)benzylidene)
2,5-cyclohexadien-1-ylidene)dimethyl-, hydroxide, inner salt, sodium salt
AS-81513
Hydrogen (4-(4-(dimethylamino)-alpha-(2-hydroxy-3,6-disulphonato-1-naphthyl)benzylidene)cyclohexa-2,5-dien-1-ylidene)dimethylammonium, monosodium salt
N-(4-((4-(Dimethylamino)phenyl)(2-hydroxy-3,6-disulfo-1-naphthale- nyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-methylmethanaminium hydroxide, inner salt, monosodium salt
N-(4-((4-(Dimethylamino)phenyl)(2-hydroxy-3,6-disulfo-1-naphthalenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-methylmethanaminium, hydroxide, inner salt, monosodium salt
CAS-3087-16-9
Lissamine(TM) Green B, Dye content 60 %
FT-0627882
G0250
Acid Green 50 100 microg/mL in Acetonitrile
D90736
Q420143
J-018175
1264298-48-7
sodium 4-((4-(dimethylamino)phenyl)(4-(dimethyliminio)cyclohexa-2,5-dienylidene)methyl)-3-hydroxynaphthalene-2,7-disulfonate
