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Merck
CN

77402

Supelco

熔点标准品 69-71°C

analytical standard

别名:

硬脂酸, 1-十八碳烷酸, C18:0, NSC 25956, NSC 261168, 十八烷酸

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About This Item

线性分子式:
CH3(CH2)16COOH
CAS号:
分子量:
284.48
Beilstein:
608585
EC 号:
MDL编号:
UNSPSC代码:
20121904
PubChem化学物质编号:
NACRES:
NA.24

等级

analytical standard

质量水平

蒸汽压

1 mmHg ( 173.7 °C)

保质期

limited shelf life, expiry date on the label

沸点

361 °C (lit.)

mp

67-72 °C (lit.)
69-71 °C (±0.3°C)

应用

food and beverages
pharmaceutical

包装形式

neat

SMILES字符串

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

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一般描述

Melting point standard 69-71 °C, stearic acid is an mp standard, ideal for the routine calibration of melting point apparatus to assure its accuracy, as per local, national and international standards laboratories. The mp value is documented as an average of 6 to 12 iterations using a Büchi B-545 equipment that is calibrated against primary standards. Melting point is ascertained by Capillary method, according to Ph. Eur. 2.2.14.
This substance is listed on the positive list of the EU regulation 10/2011 for plastics intended to come into contact with food.

应用

Stearic Acid melting point standard 69-71 °C is a melting point calibration standard, used for determining the identity and purity of chemical substances.
This product also has additional use as a reference standard in thermal property studies.

特点和优势

  • Traceable to primary standards from LGC, London
  • Grade: Analytical Standard
  • Melting point as confirmed in the thermodynamic mode of analysis
  • Measured uncertainty up to ± 0.3 °C
  • Available with certificates of analysis and safety data sheet

储存分类代码

11 - Combustible Solids

WGK

nwg

闪点(°F)

392.0 °F - Cleveland open cup

闪点(°C)

200 °C - Cleveland open cup

个人防护装备

dust mask type N95 (US), Eyeshields, Gloves


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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Palle J Pedersen et al.
Journal of medicinal chemistry, 53(9), 3782-3792 (2010-04-22)
The design of retinoid phospholipid prodrugs is described based on molecular dynamics simulations and cytotoxicity studies of synthetic retinoid esters. The prodrugs are degradable by secretory phospholipase A(2) IIA and have potential in liposomal drug delivery targeting tumors. We have
Ulla Hoppu et al.
Journal of pediatric gastroenterology and nutrition, 41(3), 335-338 (2005-09-01)
Breast milk fatty acids may have immunomodulatory properties related to the development of atopic disease. The aim of this study was to assess the impact of the breast milk fatty acid composition on the development of atopic dermatitis (AD) in
T A Doran et al.
American journal of obstetrics and gynecology, 133(3), 302-307 (1979-02-01)
Lecithin/sphingomyelin (L/S) ratio, creatinine, percentage of lipid-positive cells, palmitic acid, palmitic acid/stearic acid (P/S) ratio, and total cortisol were analyzed as tests for fetal maturity and fetal pulmonary maturity in 164 samples of amniotic fluid from 121 patients. Fifty samples
Qian Wan et al.
Nanoscale, 5(2), 744-752 (2012-12-12)
As a versatile gene vector, minicircle DNA (mcDNA) has a great potential for gene therapy. However, some serious challenges remain, such as to effectively deliver mcDNA into targeted cells/tissues and to non-invasively monitor the delivery of the mcDNA. Superparamagnetic iron

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