Chemistry:Alizarine Yellow R
From HandWiki
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| Names | |
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| IUPAC name
Sodium 2-hydroxy-5-[(E)-(4-nitrophenyl)diazenyl]benzoate
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| Other names
5-[(p-Nitrophenyl)azo]salicylic acid sodium salt
Chrome orange Mordant orange 1 C.I. 14030 | |
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3D model (JSmol)
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| Properties | |
| C13H8N3NaO5 (Na salt) C13H9N3O5 (acid) | |
| Molar mass | 309.21 g mol−1 (Na salt) 287.23 g mol−1 (acid) |
| HazardsSigma-Aldrich Co., ALIZARINE YELLOW R. Retrieved on 09 April 2023. | |
| GHS pictograms | 
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| GHS Signal word | Warning |
| HH302Script error: No such module "Preview warning".Category:GHS errors, HH319Script error: No such module "Preview warning".Category:GHS errors | |
| PP264Script error: No such module "Preview warning".Category:GHS errors, PP270Script error: No such module "Preview warning".Category:GHS errors, PP280Script error: No such module "Preview warning".Category:GHS errors, PP301+P312Script error: No such module "Preview warning".Category:GHS errors, PP305+P351+P338Script error: No such module "Preview warning".Category:GHS errors, PP330Script error: No such module "Preview warning".Category:GHS errors, PP337+P313Script error: No such module "Preview warning".Category:GHS errors, PP501Script error: No such module "Preview warning".Category:GHS errors | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
 verify (what is   ?)
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Tracking categories (test):
| Alizarine Yellow R (pH indicator) | ||
| below pH 10.1 | above pH 12.0 | |
| 10.1 | ⇌ | 12.0 |
Alizarine Yellow R is a yellow colored azo dye made by the diazo coupling reaction. It is usually commercially available as a sodium salt. In its pure form, it is a rust-colored solid.[2] It is mainly used as a pH indicator.
Preparation
Alizarine Yellow R is produced by azo coupling of salicylic acid and diazonium derivative of 4-Nitroaniline
References
- ↑ Lide, David R. (25 June 2007). CRC Handbook of Chemistry and Physics, 88th Edition. CRC Press. pp. 3–10. ISBN 9780849304880. OCLC 1024315229. https://books.google.com/books?id=SdW_QgAACAAJ.
- ↑ "Safety Datasheet (MSDS) for alizarin yellow R". Department of Chemistry, University of Oxford. 2005. http://msds.chem.ox.ac.uk/AL/alizarin_yellow_R.html.
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