Difference between revisions of "Vulpinic acid"

Latest revision as of 10:45, 26 June 2022

Chilkat Dancing Blanket
MFA# 2008.650

Description

A natural yellow dye extracted from wolf lichen (Letharia vulpina). Vulpinic acid (C19H14O5) is a methyl ester derivative of pulvinic acid that was first isolated in 1925. The bright yellow dye has been used by Northwest Coast First Peoples for dyeing porcupine quills and wool. It was identified by MALDI-TOF mass spectrometry in yellow wool in the MFA's Chilkat Dancing Blanket (#2008.650)

Wolf lichen (Letharia vulpina)

Synonyms and Related Terms

Letharia vulpinia; vulpic acid; benzeneacetic acid, alpha-(3-hydroxy-5-oxo-4-phenyl-2(5H)-furanylidene)-, methyl ester, (E)- (9CI); methyl (2E)-2-(3-hydroxy-5-oxo-4-phenylfuran-2-ylidene)-2-phenylacetate; Methylpulvinsaure;

Risks

Vulpinic acid is acutely toxic by ingestion and may be absorbed through the skin.
Cayman Chemical: SDS

Physical and Chemical Properties

Composition	C19H14O5
CAS	521-52-8
Molecular Weight	mol. wt. = 322.32 g·mol−1
Solubility	water, hexane, acetone

Sources Checked for Data in Record

George Thornton Emmons, The Tlingit Indians, Anthropological Papers of the American Museum of Natural History, 1991.
Leonard Soltzberg, internal report
Pub Chem Open Chemistry Database, https://pubchem.ncbi.nlm.nih.gov/compound/vulpinic_acid#section=Top

@@ Line 1: / Line 1: @@
+[[File:Chilkat blanket.jpg|thumb|Chilkat Dancing Blanket<br>MFA# 2008.650]]
 == Description ==
-(Headers are set off with the double equal signs on each side.  The description is a paragraph that should contain the following: material classification, latin name or chemical description, native source or production information, first use or time frame for use in art, preparation method for use in art, stability, related materials, any additional information)
+A natural yellow dye extracted from wolf lichen (''Letharia vulpina'').  Vulpinic acid (C19H14O5) is a methyl ester derivative of pulvinic acid that was first isolated in 1925. The bright yellow dye has been used by Northwest Coast First Peoples for dyeing porcupine quills and wool.  It was identified by MALDI-TOF mass spectrometry in yellow wool in the MFA's ''Chilkat Dancing Blanket'' (#2008.650)
-(Second image with format for image title)
+[[File:1280px-Letharia vulpina JHollinger.jpg|thumb|Wolf lichen (''Letharia vulpina'')]]
-[[File:indigo tinctoria t.jpg|thumb|Indigo plant
+== Synonyms and Related Terms ==
+''Letharia vulpinia''; vulpic acid; benzeneacetic acid, alpha-(3-hydroxy-5-oxo-4-phenyl-2(5H)-furanylidene)-, methyl ester, (E)- (9CI); methyl (2E)-2-(3-hydroxy-5-oxo-4-phenylfuran-2-ylidene)-2-phenylacetate; Methylpulvinsaure;
+==Risks==
+* Vulpinic acid is acutely toxic by ingestion and may be absorbed through the skin.
+* Cayman Chemical: [https://cdn.caymanchem.com/cdn/msds/21685m.pdf SDS]
+==Physical and Chemical Properties==
+{| class="wikitable"
+|-
+! scope="row"| Composition
+| C19H14O5
+|-
+! scope="row"| CAS
+| 521-52-8
+|-
+! scope="row"| Molecular Weight
+| mol. wt. = 322.32 g·mol−1
+|-
+! scope="row"| Solubility
+| water, hexane, acetone
+|}
- (''Indigofera tinctoria'')]]
 == Sources Checked for Data in Record ==
-(Provide a list of all sources used to generate this record.  Make notations if any source provides different values than included in this record.  Separate each entry with bullets)
+* George Thornton Emmons, ''The Tlingit Indians'', Anthropological Papers of the American Museum of Natural History, 1991.
-*
+* Leonard Soltzberg, internal report
-*
+* Pub Chem Open Chemistry Database, https://pubchem.ncbi.nlm.nih.gov/compound/vulpinic_acid#section=Top
-*
-(This bottom line will be created by the program)
 [[Category:Materials database]]