Merck
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77402

Supelco

Melting Point Standard 69-71°C

analytical standard

Synonym(s):
Octadecanoic acid, Stearophanic acid, Stearic acid, NSC 25956, 1-Heptadecanecarboxylic acid, C18:0, NSC 261168, Cetylacetic acid
Linear Formula:
CH3(CH2)16COOH
CAS Number:
Molecular Weight:
284.48
Beilstein:
608585
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.24

grade

analytical standard

Quality Level

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.

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

13 - Non Combustible Solids

WGK

nwg

Flash Point(F)

235.4 °F - closed cup

Flash Point(C)

113 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Protocols

HPLC Analysis of Free Fatty Acids on SUPELCOSIL™ LC-8

Separation of Palmitic acid; Linoleic acid; Palmitelaidic acid; Linolelaidic acid; Stearic acid; Oleic acid; Elaidic acid; Methyl palmitoleate.

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