Metanil yellow - Revision history

MDerrick at 14:11, 9 May 2026

2026-05-09T14:11:03Z

← Older revision		Revision as of 10:11, 9 May 2026
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	==Risks==		==Risks==
	* ~~Potentially causes~~ nerve damage		* Toxic causing nerve and enzyme damage
	* Illegal for food use although often found as an adulterant for turmeric		* Illegal for food use although often found as an adulterant for turmeric

	==Physical and Chemical Properties==		==Physical and Chemical Properties==
	* Soluble in water		* Soluble in water
	* Indicator = ~~color change from red to yellow between pH~~ 1.2 and 3.2.		* Indicator = Red (below 1.2) and yellow (above 3.2)
	* Composition = C18H14N3NaO3S		* Composition = C18H14N3NaO3S
	* Molecular weight = 375.4 g/mol		* Molecular weight = 375.4 g/mol

MDerrick: /* Risks */

2026-05-09T14:07:07Z

Risks

← Older revision		Revision as of 10:07, 9 May 2026
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	==Risks==		==Risks==
	* Potentially causes nerve damage		* Potentially causes nerve damage
	* Illegal for food use~~; but sometimes used~~ as an adulterant for turmeric		* Illegal for food use although often found as an adulterant for turmeric

	==Physical and Chemical Properties==		==Physical and Chemical Properties==

MDerrick at 14:06, 9 May 2026

2026-05-09T14:06:26Z

← Older revision		Revision as of 10:06, 9 May 2026
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	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==

	~~CI 13065;~~ Acid Yellow 36; CAS 587-98-4		Acid Yellow 36; CI 13065; CAS 587-98-4

			==Risks==
			* Potentially causes nerve damage
			* Illegal for food use; but sometimes used as an adulterant for turmeric

			==Physical and Chemical Properties==
			* Soluble in water
			* Indicator = color change from red to yellow between pH 1.2 and 3.2.
			* Composition = C18H14N3NaO3S
			* Molecular weight = 375.4 g/mol
			* Melting Pt = >250 C

	==Resources and Citations==		==Resources and Citations==
			* Wikipedia: [https://en.wikipedia.org/wiki/Metanil_Yellow Metanil Yellow] Accessed May 2026
			* PubChem: [https://pubchem.ncbi.nlm.nih.gov/compound/Metanil_yellow Metanil Yellow]
	* Colour Index International online at www.colour-index.org		* Colour Index International online at www.colour-index.org

MDerrick at 16:19, 23 August 2022

2022-08-23T16:19:50Z

← Older revision		Revision as of 12:19, 23 August 2022
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	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==

	CI 13065; Acid Yellow 36		CI 13065; Acid Yellow 36; CAS 587-98-4

	~~{\| class~~=~~"wikitable"~~		==Resources and Citations==
	\|-
	~~! scope~~=~~"row"\| CAS~~
	~~\| 587-98-4~~
	\|}

	~~== Sources Checked for Data in Record~~ ==

	* Colour Index International online at www.colour-index.org		* Colour Index International online at www.colour-index.org

Jruggiero: Text replace - "\[http:\/\/cameo\.mfa\.org\/materials\/fullrecord\.asp\?name=([^\s]+)\s(.*)\]" to "$2"

2016-05-09T19:03:28Z

Text replace - "\[http:\/\/cameo\.mfa\.org\/materials\/fullrecord\.asp\?name=([^\s]+)\s(.*)\]" to "$2"

← Older revision		Revision as of 15:03, 9 May 2016
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	== Description ==		== Description ==

	A orangish-yellow synthetic monoazo dye discovered independently by C.Rumpff in 1879 and Hepp in 1882. Metanil yellow is used to dye [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~leather leather], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~wool wool], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~silk silk], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~nylon nylon], and [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~paper paper].		A orangish-yellow synthetic monoazo dye discovered independently by C.Rumpff in 1879 and Hepp in 1882. Metanil yellow is used to dye [[leather\|leather]], [[wool\|wool]], [[silk\|silk]], [[nylon\|nylon]], and [[paper\|paper]].

	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==

Jruggiero: Text replace - "== Authority ==" to "== Sources Checked for Data in Record =="

2016-05-01T18:43:40Z

Text replace - "== Authority ==" to "== Sources Checked for Data in Record =="

← Older revision		Revision as of 14:43, 1 May 2016
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	\|}		\|}

	== ~~Authority~~ ==		== Sources Checked for Data in Record ==

	* Colour Index International online at www.colour-index.org		* Colour Index International online at www.colour-index.org

Unknown user at 12:28, 24 July 2013

2013-07-24T12:28:55Z

← Older revision	Revision as of 08:28, 24 July 2013
(No difference)

Unknown user at 18:07, 27 April 2013

2013-04-27T18:07:13Z

New page

== Description ==

A orangish-yellow synthetic monoazo dye discovered independently by C.Rumpff in 1879 and Hepp in 1882. Metanil yellow is used to dye [http://cameo.mfa.org/materials/fullrecord.asp?name=leather leather], [http://cameo.mfa.org/materials/fullrecord.asp?name=wool wool], [http://cameo.mfa.org/materials/fullrecord.asp?name=silk silk], [http://cameo.mfa.org/materials/fullrecord.asp?name=nylon nylon], and [http://cameo.mfa.org/materials/fullrecord.asp?name=paper paper].

== Synonyms and Related Terms ==

CI 13065; Acid Yellow 36

{| class="wikitable"
|-
! scope="row"| CAS
| 587-98-4
|}

== Authority ==

* Colour Index International online at www.colour-index.org

[[Category:Materials database]]