W253200 Aldrich


natural, ≥99%, FG

Synonym: 2-Methoxyphenol, Catechol monomethyl ether, Pyrocatechol monomethyl ether

  • CAS Number 90-05-1

  • Linear Formula (CH3O)C6H4OH

  • Molecular Weight 124.14

  •  FEMA Number 2532

  •  Beilstein Registry Number 508112

  •  EC Number 201-964-7

  •  Council of Europe no. 173

  •  MDL number MFCD00002185

  •  PubChem Substance ID 24901124

  •  Flavis number 4.005



Related Categories Alphabetical Listings, Certified Food Grade Products, Certified Natural Products, E - H, E-G,
Quality Level   FOOD SAFE ELITE
grade   FG
  follows IFRA guidelines
reg. compliance   EU Regulation 1223/2009
  FDA 21 CFR (172.515)
  EU Regulation 1334/2008 & 178/2002
vapor density   4.27 (vs air)
vapor pressure   0.11 mmHg ( 25 °C)
assay   ≥99%
form   liquid
refractive index   n20/D 1.543(lit.)
bp   205 °C(lit.)
mp   26-29 °C(lit.)
density   1.129 g/mL at 25 °C(lit.)
Documentation   see Safety & Documentation for available documents
Organoleptic   medicinal; woody; smoky; spicy; vanilla
food allergen   no known allergens
fragrance allergen   no known allergens



1 kg in glass bottle

5, 10 kg in poly drum

Biochem/physiol Actions

Guaiacol, along with 2,4,6-trichloroanisole, is responsible for cork taint in wine. A method has been developed for extraction and quantitation of the two compounds.

General description

Guaiacol is a flavor compound occurs naturally in tomatoes and wine that is matured in oak barrels.

Other Notes

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Safety & Documentation

Same Products - New Packaging

New F&F Product Supplement
Protocols & Articles


Securing a Traceable Supply Chain for Food Grade Flavor Ingredients

Introduction Defining "Food Grade" Understanding "Food Grade" Versus "Industrial Grade" Top Questions to Ask a Flavor & Fragrances Supplier The Sigma-Aldrich Approach
Dr. Luke Grocholl
Quality Assurance Supervisor, Sigma-Aldrich Flavors & Fragrances
Keywords: Food & Beverage, Food Safety, Solvents

The Complex Regulatory Landscape for Natural Flavor Ingredients

Introduction The Regulatory Landscape US and EU Definitions of Natural Regional Regulatory Variations The Example of Vanillin The Case for Standardization
Mr. Michael Sabisch1, Mr. David Smith2

1Senior Quality Assurance Specialist
2International Sales Coordinator, Sigma-Aldrich Flavors & Fragrances
Keywords: Fermentation, Food Safety, Oxidations

Understanding the Complexities of Kosher Ingredients

Introduction What is Kosher Product Considerations for Kosher Certification Kosher's Added Benefit to the Food Industry Sigma-Aldrich's Kosher Experience and Offering
Dr. Luke Grocholl1, Rabbi Gershon Segal

1Dr. Luke Grocholl, Quality Assurance Supervisor, Sigma-Aldrich Flavors & Fragrances
Keywords: Fermentation, Food & Beverage, Safety industry

Related Content

Flavors and Fragrances Quality and Regulatory

From a comprehensive vendor approval process, to the testing of raw material at receipt as well as when product is ready to be shipped; we prove our dedication to supply chain transparency, every day.
Keywords: Allergens, Food Safety, Solvents

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