77402

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
• 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

Properties

• 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

Description

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

Safety Information

• 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