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
175366
Stearic acid
reagent grade, 95%
Sinónimos:
STA, 1-Heptadecanecarboxylic acid, C18:0, Cetylacetic acid, NSC 25956, NSC 261168, Octadecanoic acid, Stearophanic acid
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About This Item
grado
reagent grade
Nivel de calidad
presión de vapor
1 mmHg ( 173.7 °C)
Ensayo
95%
Formulario
powder or flakes
bp
361 °C (lit.)
mp
67-72 °C (lit.)
grupo funcional
carboxylic acid
cadena SMILES
CCCCCCCCCCCCCCCCCC(O)=O
InChI
1S/C18H36O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h2-17H2,1H3,(H,19,20)
Clave InChI
QIQXTHQIDYTFRH-UHFFFAOYSA-N
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Descripción general
Conversion of SA with >98% selectivity to deoxygenated C17 products by employing carbon supported palladium catalyst has been reported.[2] It is a promising phase change material (PCM) due to its non-toxicity and convenient melting temperature. Also, it exhibits almost negligible supercooling while undergoing phase change.[3]
Aplicación
Código de clase de almacenamiento
11 - Combustible Solids
Clase de riesgo para el agua (WGK)
nwg
Punto de inflamabilidad (°F)
392.0 °F - Cleveland open cup
Punto de inflamabilidad (°C)
200 °C - Cleveland open cup
Equipo de protección personal
dust mask type N95 (US), Eyeshields, Gloves
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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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What is the Solublity of this product?
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This product is not tested for solubility. However, other Stearic acid products available are tested for solubility in chloroform at 100 mg/mL. Other sources report that this compound is also soluble in several other solvents:
acetone: soluble
benzene: freely soluble
ethanol: soluble
ether: freely soluble
propylene glycol: solubleHelpful?
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I am curious about the storage temperature for this product. Can you tell me?
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This product is stored at ambient temperature. If no storage temperature is listed in the PROPERTIES section of the product page or the product label it may be assumed that ambient temperature is suitable.
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