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
175366
硬脂酸
reagent grade, 95%, powder or flakes
同義詞:
STA, 1-十八碳烷酸, C18:0, NSC 25956, NSC 261168, 十八烷酸, 硬脂酸
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產品名稱
硬脂酸, reagent grade, 95%
grade
reagent grade
Quality Segment
vapor pressure
1 mmHg ( 173.7 °C)
assay
95%
form
powder or flakes
bp
361 °C (lit.)
mp
67-72 °C (lit.)
functional group
carboxylic acid
SMILES string
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)
InChI key
QIQXTHQIDYTFRH-UHFFFAOYSA-N
General description
报道了以负载型钯催化剂，将选择性 >98% 的水杨酸转化为脱氧的 C17 产物。相更改储能材料具有无毒、熔化温度方便等优点，是一种很有前途的相变储能材料。而且，它在经历相更改时表现出几乎可以忽略不计的过冷。
Application
1 of 1
本產品 | |||
|---|---|---|---|
| description reagent grade, 95% | description Pharmaceutical Secondary Standard; Certified Reference Material | description United States Pharmacopeia (USP) Reference Standard | description certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland |
| grade reagent grade | grade pharmaceutical secondary standard, certified reference material | grade pharmaceutical primary standard | grade certified reference material, TraceCERT® |
| assay 95% | assay - | assay - | assay - |
| Quality Level 200 | Quality Level 300 | Quality Level - | Quality Level 300 |
| form powder or flakes | form - | form solid | form - |
| vapor pressure 1 mmHg ( 173.7 °C) | vapor pressure 1 mmHg ( 173.7 °C) | vapor pressure 1 mmHg ( 173.7 °C) | vapor pressure 1 mmHg ( 173.7 °C) |
| bp 361 °C (lit.) | bp 361 °C (lit.) | bp 361 °C (lit.) | bp 361 °C (lit.) |
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存儲類別/等級
11 - Combustible Solids
閃點 (F)
392.0 °F - Cleveland open cup
閃點（°C）
200 °C - Cleveland open cup
PPE（個人防護裝備）
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?
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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What is the Solublity of this product?
1 answer-
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?
1 answer-
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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