Difference between revisions of "Phloroglucinol"

Latest revision as of 08:06, 22 October 2022

Description

White to yellowish crystals that are used to detect the presence of mechanical wood pulp in paper. Phloroglucinol test solution contains Hydrochloric acid and ethanol. A drop placed on the paper will turn red when Lignin is present (detection limit is about 5%). Iron will react with phloroglucinol giving a purple product. Once the two-part solution is mixed, it has a shelf life of 2-3 months (TAPPI T401).

Synonyms and Related Terms

phloroglucinol dihydrate; 1,3,5-benzenetriol; 1,3,5-trihydroxybenzene; phloroglucine; phloroglucin stain

Chemical structure

Risks

Decomposes in light; store in dark container.
Inhalation and skin contact may cause irritation.
ThermoFisher: SDS

Physical and Chemical Properties

Soluble in ethanol, pyridine, ether. Slightly soluble in water.
Detection limit is about 5% when used as a stain to detect mechanical wood pulp.

Composition	C6H3(OH)3
CAS	108-73-6
Melting Point	212-218 C
Molecular Weight	mol. wt.=126.11

Resources and Citations

AIC Book and Paper Catalog, 10. Spot Tests, page 12.

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

Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982

Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989

The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7482

@@ Line 1: / Line 1: @@
 == Description ==
-White to yellowish crystals that are used to detect the presence of mechanical wood pulp in paper. Phloroglucinol test solution contains [http://cameo.mfa.org/materials/fullrecord.asp?name=hydrochloric%20acid hydrochloric acid] and [http://cameo.mfa.org/materials/fullrecord.asp?name=ethyl%20alcohol ethanol]. A drop placed on the paper will turn red when [http://cameo.mfa.org/materials/fullrecord.asp?name=lignin lignin] is present (detection limit is about 5%). [http://cameo.mfa.org/materials/fullrecord.asp?name=Iron Iron] will react with phloroglucinol giving a purple product. Once the two-part solution is mixed, it has a shelf life of 2-3 months (TAPPI T401).
+White to yellowish crystals that are used to detect the presence of mechanical wood pulp in paper. Phloroglucinol test solution contains [[hydrochloric%20acid|hydrochloric acid]] and [[ethyl%20alcohol|ethanol]]. A drop placed on the paper will turn red when [[lignin|lignin]] is present (detection limit is about 5%). [[Iron|Iron]] will react with phloroglucinol giving a purple product. Once the two-part solution is mixed, it has a shelf life of 2-3 months (TAPPI T401).
 == Synonyms and Related Terms ==
 phloroglucinol dihydrate; 1,3,5-benzenetriol; 1,3,5-trihydroxybenzene; phloroglucine; phloroglucin stain
 [[[SliderGallery rightalign|phloroglucinol.jpg~Chemical structure]]]
-== Other Properties ==
+== Risks ==
-Soluble in ethanol, pyridine, ether. Slightly soluble in water.
+* Decomposes in light; store in dark container.
+* Inhalation and skin contact may cause irritation.
+* ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=AC241760250&productDescription=PHLOROGLUCINOL%2C+99%2B%25%2C+AN+25GR&vendorId=VN00032119&countryCode=US&language=en SDS]
+== Physical and Chemical Properties ==
-Detection limit is about 5% when used as a stain to detect mechanical wood pulp.
+* Soluble in ethanol, pyridine, ether. Slightly soluble in water.
+* Detection limit is about 5% when used as a stain to detect mechanical wood pulp.
 {| class="wikitable"
@@ Line 24: / Line 27: @@
 |-
 ! scope="row"| Melting Point
-| 212-218
+| 212-218 C
 |-
 ! scope="row"| Molecular Weight
@@ Line 30: / Line 33: @@
 |}
-== Hazards and Safety ==
+==Resources and Citations==
-Decomposes in light; store in dark container.
-Inhalation and skin contact may cause irritation.
-Mallinckrodt Baker: [http://www.jtbaker.com/msds/englishhtml/p3863.htm MSDS]
-== Additional Information ==
-AIC Book and Paper Catalog, 10. Spot Tests, page 12.
-== Sources Checked for Data in Record ==
+* AIC Book and Paper Catalog, 10. Spot Tests, page 12.
 * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993