If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
G5502
Guaiacol
oxidation indicator
Synonym(s):
2-Methoxyphenol, Catechol monomethyl ether, Pyrocatechol monomethyl ether
Select a Size
| Pack Size | SKU | Availability | Price |
|---|---|---|---|
| 100 g | Estimated to ship onJune 11, 2026fromMILWAUKEE | $70.10 | |
| 250 g | Estimated to ship onJune 11, 2026fromMILWAUKEE | $99.00 | |
| 500 g | Available to ship TODAYfromMILWAUKEE | $194.00 | |
| 1 kg | Estimated to ship onJune 11, 2026fromMILWAUKEE | $314.00 |
About This Item
vapor density
4.27 (vs air)
Quality Level
vapor pressure
0.11 mmHg ( 25 °C)
assay
≥98.0%
form
liquid, solid
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.)
SMILES string
COc1ccccc1O
InChI
1S/C7H8O2/c1-9-7-5-3-2-4-6(7)8/h2-5,8H,1H3
InChI key
LHGVFZTZFXWLCP-UHFFFAOYSA-N
General description
Application
- as a substrate for peroxidase enzyme to determine its activity
- as a substrate to determine laccase activity
- as a reagent in peroxidase (POD) activity test
Biochem/physiol Actions
Disclaimer
1 of 1
This Item | |||
|---|---|---|---|
| assay ≥98.0% | assay ≥99% | assay - | assay ≥98.0% |
| bp 205 °C (lit.) | bp 205 °C (lit.) | bp 205 °C (lit.) | bp 205 °C (lit.) |
| density 1.129 g/mL at 25 °C (lit.) | density 1.129 g/mL at 25 °C (lit.) | density 1.129 g/mL at 25 °C (lit.) | density 1.129 g/mL at 25 °C (lit.) |
| mp 26-29 °C (lit.) | mp 26-29 °C (lit.) | mp 26-29 °C (lit.) | mp 26-29 °C (lit.) |
| refractive index n20/D 1.543 (lit.) | refractive index n20/D 1.543 (lit.) | refractive index n20/D 1.543 (lit.) | refractive index n20/D 1.543 (lit.) |
| vapor density 4.27 (vs air) | vapor density 4.27 (vs air) | vapor density 4.27 (vs air) | vapor density 4.27 (vs air) |
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signalword
Warning
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2
Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
194.0 °F - closed cup
flash_point_c
90 °C - closed cup
ppe
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
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Related Content
Product Information Sheet
Global Trade Item Number
| SKU | GTIN |
|---|---|
| G5502-500G | 04061833635292 |
| G5502-1KG | 04061833635278 |
| G5502-250G | 04061835326860 |
| G5502-100G | 04061835326853 |
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
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Does this material can be used for analytical testing as standard ?
1 answer-
This product is not tested for use as an analytical standard. Please see the link below to review product PHR1136. a pharmaceutical secondary reference standard:
https://www.sigmaaldrich.com/product/sial/phr1136Helpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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