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77402

Supelco

Melting Point Standard 69-71°C

analytical standard

Synonym(s):

Stearic acid, 1-Heptadecanecarboxylic acid, C18:0, Cetylacetic acid, NSC 25956, NSC 261168, Octadecanoic acid, Stearophanic acid

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About This Item

Linear Formula:
CH3(CH2)16COOH
CAS Number:
57-11-4
Molecular Weight:
284.48
Beilstein:
608585
EC Number:
200-313-4
MDL number:
MFCD00002752
UNSPSC Code:
20121904
PubChem Substance ID:
329767653
NACRES:
NA.24

grade

analytical standard

Quality Level

100

vapor pressure

1 mmHg ( 173.7 °C)

shelf life

limited shelf life, expiry date on the label

bp

361 °C (lit.)

mp

67-72 °C (lit.)
69-71 °C (±0.3°C)

application(s)

food and beverages
pharmaceutical

format

neat

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

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General description

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.

Application

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.

Features and Benefits

  • 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

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

392.0 °F - Cleveland open cup

Flash Point(C)

200 °C - Cleveland open cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

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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
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Nanoscale, 5(2), 744-752 (2012-12-12)
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