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/449/386/product-dating-information-mk.pdf
155721
Methacrylic acid
contains 250 ppm MEHQ as inhibitor, 99%
Synonym(s):
2-Methacrylic acid, 2-Methylpropenoic acid
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About This Item
Recommended Products
vapor density
>3 (vs air)
Quality Level
vapor pressure
1 mmHg ( 20 °C)
Assay
99%
form
liquid
autoignition temp.
752 °F
contains
250 ppm MEHQ as inhibitor
refractive index
n20/D 1.431 (lit.)
pH
2.0-2.2 (20 °C, 100 g/L)
bp
163 °C (lit.)
mp
12-16 °C (lit.)
density
1.015 g/mL at 25 °C (lit.)
SMILES string
C=C(C)C(O)=O
InChI
1S/C4H6O2/c1-3(2)4(5)6/h1H2,2H3,(H,5,6)
InChI key
CERQOIWHTDAKMF-UHFFFAOYSA-N
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General description
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 3 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1A - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGK
WGK 1
Flash Point(F)
152.6 °F - closed cup
Flash Point(C)
67 °C - closed cup
Personal Protective Equipment
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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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