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
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About This Item
grade
pharmaceutical primary standard
vapor density
3.73 (vs air)
vapor pressure
0.1 mmHg ( 25 °C)
autoignition temp.
815 °F
manufacturer/tradename
USP
mp
113-115 °C (lit.)
application(s)
pharmaceutical (small molecule)
format
neat
SMILES string
O=C1C=CC(=O)C=C1
InChI
1S/C6H4O2/c7-5-1-2-6(8)4-3-5/h1-4H
InChI key
AZQWKYJCGOJGHM-UHFFFAOYSA-N
General description
This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets, have been developed and issued under the Authority of the issuing Pharmacopoeia.
1,4-Benzoquinone is a dark yellow powder having a green cast. It is slightly soluble in water and soluble in alcohol, in ether, and in fixed alkali solutions. It may darken on standing.
Find answers to frequently asked questions on USP products in USP FAQs.
Application
Also ideal for use as a primary reference standard in the following tests or assays according to USP General Chapter <11>:
- pure steam
- water for injection
- sterile water for inhalation
- sterile water for injection
- sterile water for irrigation
- purified water
- sterile purified water
- water for hemodialysis
- <643>total organic carbon
Analysis Note
Other Notes
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signalword
Danger
Hazard Classifications
Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Flam. Sol. 1 - Muta. 2 - Skin Corr. 1B - Skin Sens. 1 - STOT SE 3
target_organs
Respiratory system
Storage Class
4.1B - Flammable solid hazardous materials
flash_point_f
170.6 °F - closed cup
flash_point_c
77 °C - closed cup
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Global Trade Item Number
| SKU | GTIN |
|---|---|
| 1056504-200MG | 04061833742099 |
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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