Molekula
Guaiacol (2-Methoxyphenol)(C7H8O2)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Guaiacol (2-Methoxyphenol) is an organic compound with a distinctive phenolic aroma, widely used in perfumery, flavorings, and as a precursor in pharmaceutical synthesis. It also serves as a solvent and antioxidant in industrial applications. This chemical has a CAS number of 90-05-1, with the molecular formula (CH3O)C6H4OH and a molecular weight of 124.14 g/mol. It is typically stored at ambient conditions, with a signal word of "Warning" for safety handling. Molekula supplies Guaiacol from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 kg — £77.60 per pack ex VAT · £93.12 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Colourless to light yellow and pink liquid or solid |
| Melting Point | 26-29°C |
| Loss on Drying | ~0.1% |
| Odour | Characteristic |
| Assay | ≥99.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 82 °C |
| Acidity | Neutral |
For research use only. Not for human use.
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Hexagonal prisms |
| Odour | Aromatic odor |
| Melting Point | 32 °C |
| Boiling Point | 205 °C |
| Density | 1.1287 g/cm³ at 21 °C |
| Water Solubility | Slightly soluble in water |
| Solubility (other solvents) | Soluble in carbon tetrachloride |
| Vapour Pressure | 0.103 mmHg 25 °C |
| Refractive Index | 1.5429 |
| pKa | pKa = 9.98 |
| log P (octanol/water) | 1.32 |
Source: PubChem CID 460 (HSDB, Joint FAO/WHO Expert Committee on Food Additives (JECFA))
Identification
| Property | Value |
|---|---|
| SKU | 22444940 |
| CAS Number | 90-05-1 |
| IUPAC Name | 2-methoxyphenol |
| EC Number | 201-964-7 |
| Molecular Formula | (CH3O)C6H4OH |
| Molecular Weight | 124.14 |
| Exact Mass | 124.0524 |
| SMILES | COC1=CC=CC=C1O |
| InChIKey | LHGVFZTZFXWLCP-UHFFFAOYSA-N |
| InChI | InChI=1S/C7H8O2/c1-9-7-5-3-2-4-6(7)8/h2-5,8H,1H3 |
| PubChem CID | 460 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29095050 |
| Tariff Code | 2909500090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H315 Causes skin irritation
- H319 Causes serious eye irritation
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is guaiacol (2-methoxyphenol) commonly used for?
Guaiacol is primarily used as a precursor in the synthesis of antioxidants, pharmaceuticals (e.g., guaifenesin), and flavor/fragrance compounds such as vanillin and eugenol. It's also employed in lignin-based chemical production and as a solvent in some industrial applications.
What is the chemical formula and molecular weight of guaiacol?
The chemical formula is (CH₃O)C₆H₄OH (or C₇H₈O₂), and the molecular weight is 124.14 g/mol.
How should guaiacol be stored?
Store guaiacol in a tightly sealed container at ambient temperature, away from direct sunlight, heat, and ignition sources. Keep it in a well-ventilated area.
What grades or purities of guaiacol does Molekula supply?
Molekula supplies technical grade and high-purity (98%+) guaiacol, depending on the application requirements. Let us know your specifications for exact details.
Can Molekula supply guaiacol in bulk quantities?
Yes, we offer bulk packaging options (drums, IBCs, or custom solutions) for guaiacol. Minimum order quantities and pricing depend on the grade and volume—contact us for bulk inquiries.
What documentation is provided with a guaiacol order?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability. Additional certifications (e.g., REACH, FDA compliance) are available upon request.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.