Hydroxynaphthol blue: Difference between revisions

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	{{chembox		{{chembox
			\| Verifiedfields = changed
⚫	\| verifiedrevid = ~~401250520~~
			\| Watchedfields = changed
		⚫	\| verifiedrevid = 432242693
	\| ImageFile = Hydroxynaphthol blue.png		\| ImageFile = Hydroxynaphthol blue.png
	\| OtherNames = Hydroxynaphthol blue		\| OtherNames = Hydroxynaphthol blue
	\| Section1 = {{Chembox Identifiers		\| Section1 = {{Chembox Identifiers
			\| CASNo_Ref = {{cascite\|correct\|??}}
	\| CASNo = 63451-35-4		\| CASNo = 63451-35-4
			\| UNII_Ref = {{fdacite\|correct\|FDA}}
			\| UNII = VG5SKF7S6C
	\| PubChem = 9576626		\| PubChem = 9576626
	\| SMILES = O=S(C(C=C4)=CC1=C4C(/N=N/C2=C3C(C=CC=C3)=C(S(=O)(O)=O)C=C2O)=C(O)C(S(=O)(O)=O)=C1)(O)=O}}		\| SMILES = O=S(C(C=C4)=CC1=C4C(/N=N/C2=C3C(C=CC=C3)=C(S(=O)(O)=O)C=C2O)=C(O)C(S(=O)(O)=O)=C1)(O)=O
			\| ChemSpiderID_Ref = {{chemspidercite\|changed\|chemspider}}
			\| ChemSpiderID = 20157443
			\| InChI = 1/C20H14N2O11S3.3Na/c23-15-9-16(35(28,29)30)13-3-1-2-4-14(13)18(15)21-22-19-12-6-5-11(34(25,26)27)7-10(12)8-17(20(19)24)36(31,32)33;;;/h1-9,23-24H,(H,25,26,27)(H,28,29,30)(H,31,32,33);;;/q;3*+1/p-3/b22-21+;;;
			\| InChIKey = AUIINJJXRXMPGT-QWKJSYRZBJ
			\| StdInChI_Ref = {{stdinchicite\|changed\|chemspider}}
			\| StdInChI = 1S/C20H14N2O11S3.3Na/c23-15-9-16(35(28,29)30)13-3-1-2-4-14(13)18(15)21-22-19-12-6-5-11(34(25,26)27)7-10(12)8-17(20(19)24)36(31,32)33;;;/h1-9,23-24H,(H,25,26,27)(H,28,29,30)(H,31,32,33);;;/q;3*+1/p-3/b22-21+;;;
			\| StdInChIKey_Ref = {{stdinchicite\|changed\|chemspider}}
			\| StdInChIKey = AUIINJJXRXMPGT-ZRUFZDNISA-K
			}}
	\| Section2 = {{Chembox Properties		\| Section2 = {{Chembox Properties
	\| Formula = C<sub>20</sub>H<sub>11</sub>N<sub>2</sub>Na<sub>3</sub>O<sub>11</sub>S<sub>3</sub>		\| Formula = C<sub>20</sub>H<sub>11</sub>N<sub>2</sub>Na<sub>3</sub>O<sub>11</sub>S<sub>3</sub>
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	\| MeltingPt =		\| MeltingPt =
	\| BoilingPt =		\| BoilingPt =
	\| Solubility =		\| Solubility = Soluble
			\| pKa = 6.44, 12.93<ref>{{cite journal \|author1=Atuko Itoh\|author2=Keihei Ueno\| title = Evaluation of 2-hydroxy-1-(20hydroxy-4-sulpho-1-naphthylazo)-3-naphthoic acid and hydroxynaphtol blue as metallochromic indicators in the EDTA titration of calcium \| journal = Analyst \| issn = 1364-5528 \| year = 1970\| volume = 95 \|issue=1131 \| pages = 583–589 \|doi=10.1039/an9709500583 \|bibcode=1970Ana....95..583I \| url = https://pubs.rsc.org/en/content/articlelanding/1970/AN/an9709500583}}</ref>
	\| Water Solubility = Souble
	}}		}}
	}}		}}

	'''Hydroxynaphthol blue''' is an ]. It is used for determining the endpoint in ] ]s.		'''Hydroxynaphthol blue''' is an ]. It is used for determining the endpoint in ]s/Metal Titration.

			==References==
			{{Reflist}}

	]		]
	]		]
	]		]
	]		]


	{{organic-compound-stub}}		{{organic-compound-stub}}

	]

Latest revision as of 22:01, 26 August 2023

Hydroxynaphthol blue
Names

Other names Hydroxynaphthol blue
Identifiers
CAS Number	63451-35-4
3D model (JSmol)	Interactive image
ChemSpider	20157443
ECHA InfoCard	100.058.343
PubChem CID	9576626
UNII	VG5SKF7S6C
CompTox Dashboard (EPA)	DTXSID8069852
InChI InChI=1S/C20H14N2O11S3.3Na/c23-15-9-16(35(28,29)30)13-3-1-2-4-14(13)18(15)21-22-19-12-6-5-11(34(25,26)27)7-10(12)8-17(20(19)24)36(31,32)33;;;/h1-9,23-24H,(H,25,26,27)(H,28,29,30)(H,31,32,33);;;/q;3+1/p-3/b22-21+;;;Key: AUIINJJXRXMPGT-ZRUFZDNISA-K InChI=1/C20H14N2O11S3.3Na/c23-15-9-16(35(28,29)30)13-3-1-2-4-14(13)18(15)21-22-19-12-6-5-11(34(25,26)27)7-10(12)8-17(20(19)24)36(31,32)33;;;/h1-9,23-24H,(H,25,26,27)(H,28,29,30)(H,31,32,33);;;/q;3+1/p-3/b22-21+;;;Key: AUIINJJXRXMPGT-QWKJSYRZBJ
SMILES O=S(C(C=C4)=CC1=C4C(/N=N/C2=C3C(C=CC=C3)=C(S(=O)(O)=O)C=C2O)=C(O)C(S(=O)(O)=O)=C1)(O)=O
Properties
Chemical formula	C₂₀H₁₁N₂Na₃O₁₁S₃
Molar mass	620.46301 g/mol
Appearance	Black-violet Powder
Solubility in water	Soluble
Acidity (pK_a)	6.44, 12.93
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). N verify (what is ?) Infobox references

Chemical compound

Hydroxynaphthol blue is an azo dye. It is used for determining the endpoint in complexometric titrations/Metal Titration.

References

Atuko Itoh; Keihei Ueno (1970). "Evaluation of 2-hydroxy-1-(20hydroxy-4-sulpho-1-naphthylazo)-3-naphthoic acid and hydroxynaphtol blue as metallochromic indicators in the EDTA titration of calcium". Analyst. 95 (1131): 583–589. Bibcode:1970Ana....95..583I. doi:10.1039/an9709500583. ISSN 1364-5528.

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