para-guaiacol
hydroquinone methyl ether
 
Notes:
depigmenting agent. Mequinol is a drug used in combination with the drug tretinoin in the treatment of liver spots. Mequinol used alone and in higher doses is used as a topical drug for medical depigmentation. (Wikipedia)
  • OQEMA
    • OQEMA
      With a focus on providing the highest level of service
      OQEMA has established itself at the forefront of the global chemical industry.
      The guiding principles of OQEMA have always been to establish long term relationships with customers and suppliers alike to build sustainable and profitable business for all parties. Through OQEMA’s business divisions the company tailors products and services to better support and service our customers requirements. This structure also allows the company to focus its marketing campaigns more effectively to certain industries. Over the last decade OQEMA has achieved strong growth as a result of the expansion of our business model. Going forward, the company will be expanding this business model into existing and new strategic territories.
      Email: Contact Us:
      US Email: Dean Matienzo
      Email: Sales
      US Email: Dean Matienzo - Sales Manager
      Voice: +44 1993 843081
      Fax: +44 1993 841261
      US Voice: +1 973 886 3778
      US Fax: +1 973 346 1106
      Linkedin
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      Global Distribution
      Product(s):
      4-Methoxyphenol
       
  • Penta International
    • Penta International Corporation
      Chemistry innovation
      At Penta, our products and services help businesses do business better.
      For over 30 years, Penta Manufacturing Company has played a growing role in worldwide chemistry innovations and applications. As an industry leader, Penta continues to pioneer chemistry-based solutions for practically every area of commerce. Our products and expertise have helped fuel technical advances in dozens of commercial applications including flavoring, coloring, fragrances and chemical processes.
      US Email: Technical Services
      US Email: Sales
      US Voice: (973) 740-2300
      US Fax: (973) 740-1839
      Product(s):
      08-54000 HYDROQUINONE MONOMETHYL ETHER
       
  • TCI AMERICA
    • TCI AMERICA
      Moving Your Chemistry Forward
      We continuously strive to advance our technology.
      Tokyo Chemical Industry Co., Ltd. (TCI) is a leading worldwide manufacturer of specialty organic chemicals founded in 1946. TCI provides organic laboratory chemicals as well as pharmaceutical, cosmetic and functional materials. More than 60 years of synthesis experience and multi-purpose plants enable TCI to offer more than 27,000 products as well as custom synthesis. TCI established overseas facilities in North America, Europe, China and India to serve customers worldwide.
      Email: Sales
      US Email: Sales
      Email: Global Business
      Voice: +81-3-5640-8878
      Fax: +81-3-5640-8902
      US Voice: 800-423-8616
      US Fax: 888-520-1075
      Tokyo Tel:03-5640-8851
      Tokyo Fax:03-5640-8865
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      Product(s):
      M0123 4-Methoxyphenol >99.0%(GC)
       
Synonyms   Articles   Notes   Search
4-methoxyphenol (Click)
CAS Number: 150-76-5Picture of molecule
ECHA EINECS - REACH Pre-Reg: 205-769-8
FDA UNII: 6HT8U7K3AM
Nikkaji Web: J2.031A
Beilstein Number: 0507924
MDL: MFCD00002332
CoE Number: 11241
XlogP3: 1.30 (est)
Molecular Weight: 124.13916000
Formula: C7 H8 O2
BioActivity Summary: listing
NMR Predictor: Predict (works with chrome or firefox)
Category: flavoring agents
 
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar: Search
Google Books: Search
Google Scholar: with word "volatile"Search
Google Scholar: with word "flavor"Search
Google Scholar: with word "odor"Search
Perfumer and Flavorist: Search
Google Patents: Search
US Patents: Search
EU Patents: Search
Pubchem Patents: Search
PubMed: Search
NCBI: Search
Flavis Number: 04.077 (Old)
DG SANTE Food Flavourings: 04.077  4-methoxyphenol
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Physical Properties:
Appearance: white crystalline powder (est)
Assay: 95.00 to 100.00 % 
Food Chemicals Codex Listed: No
Melting Point: 53.00 to  57.00 °C. @ 760.00 mm Hg
Boiling Point: 243.00 to  245.00 °C. @ 760.00 mm Hg
Vapor Pressure: 0.021000 mm/Hg @ 25.00 °C. (est)
Vapor Density: 4.3 ( Air = 1 )
Flash Point: 249.00 °F. TCC ( 120.56 °C. )
logP (o/w): 1.580
Soluble in:
 alcohol
 water, 1.648e+004 mg/L @ 25 °C (est)
 water, 4.00E+04 mg/L @ 25 °C (exp)
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Organoleptic Properties:
Odor Strength: high ,
recommend smelling in a 1.00 % solution or less
 
Odor Description:
at 1.00 % in dipropylene glycol. 
phenolic
 
Odor and/or flavor descriptions from others (if found).
 
 
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Cosmetic Information:
CosIng: cosmetic data
Cosmetic Uses: antioxidants
reducing agents
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Suppliers:
BOC Sciences
For experimental / research use only.
Mequinol >98%
OQEMA
4-Methoxyphenol
Penta International
HYDROQUINONE MONOMETHYL ETHER
Santa Cruz Biotechnology
For experimental / research use only.
4-Methoxyphenol ≥99%
Sigma-Aldrich
For experimental / research use only.
4-Methoxyphenol purum, =98.0% (HPLC)
TCI AMERICA
For experimental / research use only.
4-Methoxyphenol >99.0%(GC)
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Safety Information:
Preferred SDS: View
European information :
Most important hazard(s):
Xn - Harmful.
R 22 - Harmful if swallowed.
R 36 - Irritating to eyes.
R 43 - May cause sensitisation by skin contact.
S 02 - Keep out of the reach of children.
S 20 - When using do not eat or drink.
S 24/25 - Avoid contact with skin and eyes.
S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S 37/39 - Wear suitable gloves and eye/face protection.
S 46 - If swallowed, seek medical advice immediately and show this container or label.
 
Hazards identification
 
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
 
Pictogram
 
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
gavage-rat LD50  [sex: M,F] > 5000 mg/kg
(Blaszcak & Auletta, 1987)

intraperitoneal-mouse LD50  250 mg/kg
National Technical Information Service. Vol. AD691-490

oral-rat LD50  1600 mg/kg
Kodak Company Reports. Vol. 21MAY1971

Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
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Safety in Use Information:
Category: flavoring agents
IFRA Critical Effect: Depigmentation
IFRA: View Standard
Recommendation for para-guaiacol usage levels up to:
 PROHIBITED: Should not be used as a fragrance ingredient.
 
Maximised Survey-derived Daily Intakes (MSDI-EU): 0.12 (μg/capita/day)
Modified Theoretical Added Maximum Daily Intake (mTAMDI): 420 (μg/person/day)
Threshold of Concern:1800 (μg/person/day)
Structure Class: I
 
Food categories according to Commission Regulation EC No. 1565/2000 (EC, 2000) in FGE.06 (EFSA, 2002a). According to the Industry the "normal" use is defined as the average of reported usages and "maximum use" is defined as the 95th percentile of reported usages (EFSA, 2002i).
Note: mg/kg = 0.001/1000 = 0.000001 = 1/1000000 = ppm.
 average usage mg/kgmaximum usage mg/kg
Dairy products, excluding products of category 02.0 (01.0): 0.500002.50000
Fats and oils, and fat emulsions (type water-in-oil) (02.0): 0.200001.00000
Edible ices, including sherbet and sorbet (03.0): 0.500002.50000
Processed fruit (04.1): 0.400002.00000
Processed vegetables (incl. mushrooms & fungi, roots & tubers, pulses and legumes), and nuts & seeds (04.2): --
Confectionery (05.0): 1.000005.00000
Cereals and cereal products, incl. flours & starches from roots & tubers, pulses & legumes, excluding bakery (06.0): 0.200001.00000
Bakery wares (07.0): 2.0000010.00000
Meat and meat products, including poultry and game (08.0): 0.200001.00000
Fish and fish products, including molluscs, crustaceans and echinoderms (MCE) (09.0): 0.200001.00000
Eggs and egg products (10.0): --
Sweeteners, including honey (11.0): --
Salts, spices, soups, sauces, salads, protein products, etc. (12.0): 0.300001.50000
Foodstuffs intended for particular nutritional uses (13.0): 0.500002.50000
Non-alcoholic ("soft") beverages, excl. dairy products (14.1): 0.200001.00000
Alcoholic beverages, incl. alcohol-free and low-alcoholic counterparts (14.2): 1.000005.00000
Ready-to-eat savouries (15.0): 2.0000010.00000
Composite foods (e.g. casseroles, meat pies, mincemeat) - foods that could not be placed in categories 01.0 - 15.0 (16.0): 0.400002.00000
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Safety References:
European Food Safety Athority(efsa): Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies...
European Food Safety Authority (EFSA) reference(s):
Opinion of the Scientific Panel on food additives, flavourings, processing aids and materials in contact with food (AFC) related to Flavouring Group Evaluation 22 (FGE.22): Ring-substituted phenolic substances from chemical groups 21 and 25 (Commission Regulation (EC) No 1565/2000 of 18 July 2000)
View page or View pdf
Flavouring Group Evaluation 58 (FGE.58) Consideration of phenol derivatives evaluated by JECFA (55th meeting) structurally related to ring substituted phenolic substances evaluated by EFSA in FGE.22 (2006) (Commission Regulation (EC) No 1565/2000 of 18 July 2000) - Opinion of the Scientific Panel on Food Additives, Flavourings, Processing Aids and Materials in contact with Food (AFC)
View page or View pdf
Flavouring Group Evaluation 60 (FGE.60): Consideration of eugenol and related hydroxyallylbenzene derivatives evaluated by JECFA (65th meeting) structurally related to ring- substituted phenolic substances evaluated by EFSA in FGE.22 (2006)
View page or View pdf
Scientific Opinion on Flavouring Group Evaluation 22, Revision 1 (FGE.22Rev1): Ring-substituted phenolic substances from chemical groups 21 and 25
View page or View pdf
EPI System: View
NIOSH International Chemical Safety Cards: search
NIOSH Pocket Guide: search
NLM Hazardous Substances Data Bank: Search
Chemical Carcinogenesis Research Information System: Search
Cancer Citations: Search
Toxicology Citations: Search
Carcinogenic Potency Database: Search
EPA GENetic TOXicology: Search
Env. Mutagen Info. Center: Search
NLM Developmental and Reproductive Toxicity: Search
EPA Substance Registry Services (TSCA): 150-76-5
EPA ACToR: Toxicology Data
EPA Substance Registry Services (SRS): Registry
Laboratory Chemical Safety Summary : 9015
National Institute of Allergy and Infectious Diseases: Data
SCCNFP: opinion
WGK Germany: 1
 4-methoxyphenol
Chemidplus: 0000150765
EPA/NOAA CAMEO: hazardous materials
RTECS: 150-76-5
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References:
 4-methoxyphenol
NIST Chemistry WebBook: Search Inchi
Canada Domestic Sub. List: 150-76-5
Pubchem (cid): 9015
Pubchem (sid): 134973235
Pherobase: View
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Other Information:
(IUPAC): Atomic Weights of the Elements 2009
(IUPAC): Atomic Weights of the Elements 2009 (pdf)
Videos: The Periodic Table of Videos
tgsc: Atomic Weights use for this web site
(IUPAC): Periodic Table of the Elements
CHEBI: View
CHEMBL: View
KEGG (GenomeNet): D04926
HMDB (The Human Metabolome Database): HMDB29696
FooDB: FDB000886
Export Tariff Code: 2909.50.5000
Haz-Map: View
Typical G.C.
VCF-Online: VCF Volatile Compounds in Food
ChemSpider: View
Wikipedia: View
RSC Learn Chemistry: View
Formulations/Preparations:
topical solution; 2% mequinol with tretinoin 0.01% (solage) (with alcohol 77.8% vv); (galderma)
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Potential Blenders and core components note
 
None Found
 
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Potential Uses:
 artificial nail systems 
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Occurrence (nature, food, other): note
 anise seed
Search Trop  Picture
 anise star anise oil
Search Trop  Picture
 champaca concrete @ trace%
Data  GC  Search Trop  Picture
 galangal lesser galangal - less than 500 mg/kg
Search Trop  Picture
 marjoram shoot
Search Trop  Picture
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Synonyms:
p-guaiacol
para-guaiacol
 HQMME
 hydroquinone methyl ether
 hydroquinone monomethyl ether
1-hydroxy-4-methoxybenzene
4-hydroxyanisole
p-hydroxyanisole
para-hydroxyanisole
p-hydroxymethoxybenzene
para-hydroxymethoxybenzene
 leucobasal
 leucodine B
 mechinolum
 mequinol
4-methoxy-phenol
4-methoxyphenol
p-methoxyphenol
para-methoxyphenol
monomethyl ether hydroquinone
 phenol, 4-methoxy-
 phenol, p-methoxy-
 solage
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