“Light Green SF”的意思、由来-开放百科全书

词条

Light Green SF

释义

Uses
Biomedical Food coloring
References

{{Chembox
| Verifiedfields = changed
| verifiedrevid = 400142566
| ImageFile=Light Green SF yellowish.png
| ImageSize=250
| IUPACName=ethyl-[4-[[4-[ethyl-[(3-sulfophenyl)methyl]amino]phenyl]-(4-sulfophenyl)methylene]-1-cyclohexa-2,5-dienylidene]-[(3-sulfophenyl)methyl]ammonium
| OtherNames=Light Green, Acid Green, Lissamine green SF, Acid Green 5, Food Green 2, FD&C Green no. 2, Green No. 205, Acid Brilliant Green 5, Pencil Green SF
|Section1={{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 19952
| InChI = 1/C37H36N2O9S3.2Na/c1-3-38(25-27-7-5-9-35(23-27)50(43,44)45)32-17-11-29(12-18-32)37(31-15-21-34(22-16-31)49(40,41)42)30-13-19-33(20-14-30)39(4-2)26-28-8-6-10-36(24-28)51(46,47)48;;/h5-24H,3-4,25-26H2,1-2H3,(H2-,40,41,42,43,44,45,46,47,48);;/q;2*+1/p-2
| InChIKey = DGOBMKYRQHEFGQ-NUQVWONBAW
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/C37H36N2O9S3.2Na/c1-3-38(25-27-7-5-9-35(23-27)50(43,44)45)32-17-11-29(12-18-32)37(31-15-21-34(22-16-31)49(40,41)42)30-13-19-33(20-14-30)39(4-2)26-28-8-6-10-36(24-28)51(46,47)48;;/h5-24H,3-4,25-26H2,1-2H3,(H2-,40,41,42,43,44,45,46,47,48);;/q;2*+1/p-2
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = DGOBMKYRQHEFGQ-UHFFFAOYSA-L
| CASNo_Ref = {{cascite|correct|??}}
| CASNo=5141-20-8
| PubChem = 21223
| KEGG_Ref = {{keggcite|changed|kegg}}
| KEGG = C19439
| SMILES = [Na+].[Na+].[O-]S(=O)(=O)c1cccc(c1)CN(c2ccc(cc2)C(=C4C=CC(=[N+](CC)Cc3cccc(c3)S([O-])(=O)=O)C=C4)c5ccc(cc5)S([O-])(=O)=O)CC
}}
|Section2={{Chembox Properties
| Formula=C₃₇H₃₇N₂O₉S₃+
| MolarMass=749.893 g/mol
| Appearance=
| Density=
| MeltingPt=
| BoilingPt=
| Solubility=
|Section3={{Chembox Hazards
| MainHazards=
| FlashPt=
| AutoignitionPt =
}}

Light Green SF (C.I. 42095) is a green triarylmethane dye.

Uses

Biomedical

It is used in histology for staining collagen;^[1] for that purpose it is a standard dye in North America. In Masson's trichrome it is used as a counterstain to acid fuchsin. It is a critical component of Papanicolaou stains together with eosin Y and bismarck brown Y. It usually comes as a disodium salt. Its maximum absorption is at 630 (422) nm.

The dye is not very durable — it has a tendency to fade. When fading is to be avoided, it is replaced with Fast Green FCF, which also has more brilliant color. Fast Green FCF can also substitute Light Green SF in other procedures.

Lissamine green dye can be used to check the health of the anterior surfaces of the eye. It is available on a steret. The steret is wet with saline and then the dye is dropped into the lower fornix. The dye shows up conjunctival staining similar to rose Bengal dye but it does not sting like rose Bengal does.

Food coloring

Light Green SF was once used as a green food colorant. Its use in the U.S. was discontinued due to its low popularity.^[2]

References

1. ^{{cite web|url=https://www.fishersci.com/shop/products/light-green-sf-yellowish-certified-biological-stain-fisher-chemical-glass-bottle-25g/o338225 |title=Light Green SF, Yellowish (Certified Biological Stain), Fisher Chemical |publisher=Fisher Scientific |accessdate=7 December 2016 |archiveurl=https://web.archive.org/web/20161207181122/https://www.fishersci.com/shop/products/light-green-sf-yellowish-certified-biological-stain-fisher-chemical-glass-bottle-25g/o338225 |archivedate= 7 December 2016 |deadurl=no |df= }}
2. ^{{cite journal|title=A Global Perspective on the History, Use, and Identification of Synthetic Food Dyes|author1=Sharma, Vinita|author2=McKone, Harold T.|author3=Markow, Peter G.|journal=Journal of Chemical Education|year=2011|volume=88|pages=24-28|doi=10.1021/ed100545v}}

4 : Triarylmethane dyes|Staining dyes|Benzenesulfonates|Anilines

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