Difference between revisions of "Morin"

Latest revision as of 08:37, 19 October 2022

Description

A colorant found in old fustic, Cuba wood, yellow brazilwood, jakwood, and Osage orange tree. Morin crystallizes from ethanol to form colorless needles. It turns an intense yellow in alkaline solutions, but will slowly turn brown with exposure to air. Morin is used as a dye for wools: with Chromium it gives an olive green, with Aluminum and Tin, it is yellow, and with Iron, morin is a deep olive brown. It is also used as a spot test reagent for salts of Aluminum, Beryllium, Zinc, Gallium, Indium, and Selenium.

Chemical structure

Synonyms and Related Terms

2',3,4,5,7-pentahydroxyflavone; Natural Yellow 8; Natural Yellow 11; CI 75660; morina (Esp., Port.); morin hydrate; moric acid

Risks

Combustible.
Contact may cause irritation.
Fisher Scientific: MSDS

Physical and Chemical Properties

Soluble in ethanol, alkalis, acetic acid. Slightly soluble in water.

Soluble in sulfuric acid forming a solution with green fluorescence.

Composition	C15H10O7-2H2O
CAS	480-16-0
Melting Point	285 C
Molecular Weight	mol. wt. = 302.23

Resources and Citations

F. Crace-Calvert, Dyeing and Calico Printing, Palmer & Howe, London, 1876

Judith Hofenk-de Graaff, Natural Dyestuffs: Origin, Chemical Constitution, Identification, Central Research Laboratory for Objects of Art and Science, Amsterdam, 1969

Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993

The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 6352

@@ Line 1: / Line 1: @@
 == Description ==
-A colorant found in [http://cameo.mfa.org/materials/fullrecord.asp?name=fustic old fustic], Cuba wood, yellow brazilwood, jakwood, and [http://cameo.mfa.org/materials/fullrecord.asp?name=Osage orange Osage orange tree]. Morin crystallizes from [http://cameo.mfa.org/materials/fullrecord.asp?name=ethyl alcohol ethanol] to form colorless needles. It turns an intense yellow in alkaline solutions, but will slowly turn brown with exposure to air. Morin is used as a dye for [http://cameo.mfa.org/materials/fullrecord.asp?name=wool wools]: with [http://cameo.mfa.org/materials/fullrecord.asp?name=chromium chromium] it gives an olive green, with [http://cameo.mfa.org/materials/fullrecord.asp?name=aluminum aluminum] and [http://cameo.mfa.org/materials/fullrecord.asp?name=tin tin], it is yellow, and with [http://cameo.mfa.org/materials/fullrecord.asp?name=iron iron], morin is a deep olive brown. It is also used as a spot test reagent for salts of [http://cameo.mfa.org/materials/fullrecord.asp?name=aluminum aluminum], [http://cameo.mfa.org/materials/fullrecord.asp?name=beryllium beryllium], [http://cameo.mfa.org/materials/fullrecord.asp?name=zinc zinc], [http://cameo.mfa.org/materials/fullrecord.asp?name=gallium gallium], [http://cameo.mfa.org/materials/fullrecord.asp?name=indium indium], and [http://cameo.mfa.org/materials/fullrecord.asp?name=selenium selenium].
+A colorant found in [[fustic|old fustic]], Cuba wood, yellow brazilwood, jakwood, and [[Osage%20orange|Osage orange tree]]. Morin crystallizes from [[ethyl%20alcohol|ethanol]] to form colorless needles. It turns an intense yellow in alkaline solutions, but will slowly turn brown with exposure to air. Morin is used as a dye for [[wool|wools]]: with [[chromium|chromium]] it gives an olive green, with [[aluminum|aluminum]] and [[tin|tin]], it is yellow, and with [[iron|iron]], morin is a deep olive brown. It is also used as a spot test reagent for salts of [[aluminum|aluminum]], [[beryllium|beryllium]], [[zinc|zinc]], [[gallium|gallium]], [[indium|indium]], and [[selenium|selenium]].
+[[[SliderGallery rightalign|morin.jpg~Chemical structure]]]
 == Synonyms and Related Terms ==
 ',3,4,5,7-pentahydroxyflavone; Natural Yellow 8; Natural Yellow 11; CI 75660; morina (Esp., Port.); morin hydrate; moric acid
-[[[SliderGallery rightalign|morin.jpg~Chemical structure]]]
+== Risks ==
+* Combustible.
+* Contact may cause irritation.
+* Fisher Scientific: [https://fscimage.fishersci.com/msds/03247.htm MSDS]
-== Other Properties ==
+== Physical and Chemical Properties ==
 Soluble in ethanol, alkalis, acetic acid.  Slightly soluble in water.
@@ Line 24: / Line 28: @@
 |-
 ! scope="row"| Melting Point
-| 285
+| 285 C
 |-
 ! scope="row"| Molecular Weight
@@ Line 30: / Line 34: @@
 |}
-== Hazards and Safety ==
+==Resources and Citations==
-Combustible.  Contact may cause irritation.
-Fisher Scientific: [https://fscimage.fishersci.com/msds/03247.htm MSDS]
-== Authority ==
-* F. Crace-Calvert, F. Crace-Calvert, ''Dyeing and Calico Printing'', Palmer & Howe, London, 1876
+* F. Crace-Calvert, ''Dyeing and Calico Printing'', Palmer & Howe, London, 1876
-* Judith Hofenk-de Graaff, Judith Hofenk-de Graaff, ''Natural Dyestuffs: Origin, Chemical Constitution, Identification'', Central Research Laboratory for Objects of Art and Science, Amsterdam, 1969
+* Judith Hofenk-de Graaff, ''Natural Dyestuffs: Origin, Chemical Constitution, Identification'', Central Research Laboratory for Objects of Art and Science, Amsterdam, 1969
-* Richard S. Lewis, Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993
+* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993
 * ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983  Comment: entry 6352