Alizarine Yellow R

Alizarine Yellow R
	Alizarin Yellow R (sodium salt)Alizarin Yellow R (sodium salt)
	Space-filling model of Alizarine Yellow R as a sodium salt
	Alizarin Yellow R (acid)Alizarin Yellow R (acid)
Names
	IUPAC name Sodium 2-hydroxy-5-[(E)-(4-nitrophenyl)diazenyl]benzoate
	Other names 5-[(p-Nitrophenyl)azo]salicylic acid sodium salt; Chrome orange; Mordant orange 1; C.I. 14030
Identifiers
CAS Number	1718-34-9 (Na salt) ; 2243-76-7 (acid) ;
3D model (JSmol)	Interactive image;
ChemSpider	17215762 ;
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EC Number	209-536-1;
E number	Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value).
PubChem CID	6504724 (Na salt);
UNII	R1T3O0G585 (Na salt) ; OBF2VZO457 (acid) ;
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	InChI InChI=1S/C13H9N3O5.Na/c17-12-6-3-9(7-11(12)13(18)19)15-14-8-1-4-10(5-2-8)16(20)21;/h1-7,17H,(H,18,19);/q;+1/p-1/b15-14+; Key: HXKKTXMJSVFQSL-WPDLWGESSA-M ; InChI=1/C13H9N3O5.Na/c17-12-6-3-9(7-11(12)13(18)19)15-14-8-1-4-10(5-2-8)16(20)21;/h1-7,17H,(H,18,19);/q;+1/p-1/b15-14+; Key: HXKKTXMJSVFQSL-QUIZLSBABP;
	SMILES [Na+].O=C([O-])c1cc(ccc1O)/N=N/c2ccc(cc2)[N+]([O-])=O;
Properties
Chemical formula	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 labelling:
Pictograms	GHS07: Exclamation mark
Signal word	Warning
Hazard statements	H302, H319
Precautionary statements	P264, P270, P280, P301+P312, P305+P351+P338, P330, P337+P313, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ☒ verify (what is ☒ ?) Infobox references

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

Synthesis of Alizarine Yellow R

References

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External links

Alizarin Yellow R at Sigma Aldrich

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[1]

[2]

Names
Alizarin Yellow R (sodium salt) Alizarin Yellow R (sodium salt)
Space-filling model of Alizarine Yellow R as a sodium salt
Alizarin Yellow R (acid) Alizarin Yellow R (acid)
IUPAC name Sodium 2-hydroxy-5-[(E)-(4-nitrophenyl)diazenyl]benzoate
Other names 5-[(p-Nitrophenyl)azo]salicylic acid sodium salt Chrome orange Mordant orange 1 C.I. 14030
Identifiers
CAS Number	1718-34-9 (Na salt)^Y 2243-76-7 (acid)^[1]^Y
3D model (JSmol)	Interactive image
ChemSpider	17215762^Y
ECHA InfoCard	Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value). Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value).Lua error in Module:EditAtWikidata at line 29: attempt to index field 'wikibase' (a nil value).
EC Number	209-536-1
E number	Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value).
PubChem CID	6504724 (Na salt)
UNII	R1T3O0G585 (Na salt)^Y OBF2VZO457 (acid)^Y
CompTox Dashboard (EPA)	{{#property:P3117}}Lua error in Module:EditAtWikidata at line 29: attempt to index field 'wikibase' (a nil value).
InChI InChI=1S/C13H9N3O5.Na/c17-12-6-3-9(7-11(12)13(18)19)15-14-8-1-4-10(5-2-8)16(20)21;/h1-7,17H,(H,18,19);/q;+1/p-1/b15-14+;^Y Key: HXKKTXMJSVFQSL-WPDLWGESSA-M^Y InChI=1/C13H9N3O5.Na/c17-12-6-3-9(7-11(12)13(18)19)15-14-8-1-4-10(5-2-8)16(20)21;/h1-7,17H,(H,18,19);/q;+1/p-1/b15-14+; Key: HXKKTXMJSVFQSL-QUIZLSBABP
SMILES [Na+].O=C([O-])c1cc(ccc1O)/N=N/c2ccc(cc2)[N+]([O-])=O
Properties
Chemical formula	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 labelling:
Pictograms	GHS07: Exclamation mark
Signal word	Warning
Hazard statements	H302, H319
Precautionary statements	P264, P270, P280, P301+P312, P305+P351+P338, P330, P337+P313, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ☒N verify (what is ^Y☒N ?) Infobox references

Alizarine Yellow R

Preparation

References

External links

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