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词条 Green S
释义

  1. References

  2. External links

{{chembox
| Verifiedfields = changed
| Watchedfields = changed
| verifiedrevid = 419956243
| ImageFile =Green S sodium.png
| ImageSize =
| ImageAlt = Skeletal formula of Green S
| ImageFile1 = Green-S-3D-balls.png
| ImageSize1 =
| ImageAlt1 = Ball-and-stick model of Green S as a sodium salt
| IUPACName =Sodium 4-[(4-dimethylaminophenyl)-(4-dimethylazaniumylidene-1-cyclohexa-2,5-dienylidene)methyl]-3-hydroxynaphthalene-2,7-disulfonate
| OtherNames = Food Green S; FD&C Green 4; Acid green 50; Lissamine Green B; Wool Green S; C.I. 44090; E142
|Section1={{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 82646
| InChI = 1/C27H26N2O7S2.Na/c1-28(2)20-9-5-17(6-10-20)25(18-7-11-21(12-8-18)29(3)4)26-23-14-13-22(37(31,32)33)15-19(23)16-24(27(26)30)38(34,35)36;/h5-16H,1-4H3,(H2,31,32,33,34,35,36);/q;+1/p-1
| InChIKey = WDPIZEKLJKBSOZ-REWHXWOFAE
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/C27H26N2O7S2.Na/c1-28(2)20-9-5-17(6-10-20)25(18-7-11-21(12-8-18)29(3)4)26-23-14-13-22(37(31,32)33)15-19(23)16-24(27(26)30)38(34,35)36;/h5-16H,1-4H3,(H2,31,32,33,34,35,36);/q;+1/p-1
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = WDPIZEKLJKBSOZ-UHFFFAOYSA-M
| CASNo_Ref = {{cascite|correct|??}}
| CASNo =3087-16-9
| UNII_Ref = {{fdacite|changed|FDA}}
| UNII = 9B7E8Y9D0X
| PubChem =91525
| SMILES = [Na+].[O-]S(=O)(=O)c1ccc4c(c1)cc(c(O)c4/C(=C2\\C=C/C(=[N+](/C)C)/C=C2)c3ccc(N(C)C)cc3)S([O-])(=O)=O
}}
|Section2={{Chembox Properties
| Formula =C27H25N2NaO7S2
| MolarMass =576.62 g/mol
| Appearance =
| Density =
| MeltingPtC = 210
| MeltingPt_notes = (decomposes)[1]
| BoilingPt =
| Solubility =
|Section3={{Chembox Hazards
| MainHazards =
| FlashPt =
| AutoignitionPt =
| RPhrases = {{R22}}
}}

Green S is a green synthetic coal tar triarylmethane dye with the molecular formula C27H25N2O7S2Na.

As a food dye, it has E number E142. It can be used in mint sauce, desserts, gravy granules, sweets, ice creams, and tinned peas. Green S is prohibited as a food additive in Canada, United States, Japan, and Norway.{{Fact|date=November 2008}} It is approved for use as a food additive in the EU[2] and Australia and New Zealand.[3]

Green S is a vital dye, meaning it can be used to stain living cells. It is used in ophthalmology, along with fluorescein and rose bengal, to diagnose various disorders of the eye's surface, dry eyes for example.

References

1. ^{{cite web | url = https://www.sigmaaldrich.com/MSDS/MSDS/DisplayMSDSPage.do?country=US&language=en&productNumber=06737&brand=SIAL&PageToGoToURL=https%3A%2F%2Fwww.sigmaaldrich.com%2Fcatalog%2Fproduct%2Fsial%2F06737%3Flang%3Den | title = Safety Data Sheet for Green S | publisher = Sigma-Aldrich}}
2. ^UK Food Standards Agency: {{cite web |url=http://www.food.gov.uk/safereating/chemsafe/additivesbranch/enumberlist |title=Current EU approved additives and their E Numbers |accessdate=2011-10-27}}
3. ^Australia New Zealand Food Standards Code{{cite web |url=http://www.comlaw.gov.au/Details/F2011C00827 |title=Standard 1.2.4 - Labelling of ingredients |accessdate=2011-10-27}}

External links

  • Eighteenth Report of the Joint FAO/WHO Expert Committee on Food Additives (JECFA), Wld Hlth Org. techn. Rep. Ser., 1974, No. 557. FAO Nutrition Meetings Report Series, 1974, No. 54. Presented in  
  • http://www.efsa.europa.eu/en/efsajournal/pub/1851
  • http://apps.who.int/food-additives-contaminants-jecfa-database/chemical.aspx?chemID=2119
  • http://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-additives/detail/en/c/107/

8 : Triarylmethane dyes|Food colorings|Vital stains|2-Naphthols|Naphthalenesulfonates|Anilines|Organic sodium salts|E-number additives

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