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
| C6H3(OH)3 |
| 108-73-6 |
| 212-218 |
| mol. wt.=126.11 |
Other 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.
Hazards and Safety
Decomposes in light; store in dark container.
Inhalation and skin contact may cause irritation.
Mallinckrodt Baker: MSDS
Additional Information
AIC Book and Paper Catalog, 10. Spot Tests, page 12.
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Last updated on: 11/12/2008 11:58:22 AM
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