1621008

Stearic acid

United States Pharmacopeia (USP) Reference Standard

• Synonym(s): 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
• MDL number: MFCD00002752
• UNSPSC Code: 41116107
• PubChem Substance ID: 329751146
• NACRES: NA.24

Properties

• grade: pharmaceutical primary standard
• vapor pressure: 1 mmHg ( 173.7 °C)
• API family: stearic acid
• manufacturer/tradename: USP
• bp: 361 °C (lit.)
• mp: 67-72 °C (lit.)
• solubility: acetone: soluble; benzene: freely soluble; chloroform: freely soluble; ethanol: soluble; ether: freely soluble; propylene glycol: soluble; water: practically insoluble
• density: 0.845 g/cm³
• application(s): pharmaceutical (small molecule)
• 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

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia. For further information and support please go to the website of the issuing Pharmacopoeia.

Application

Stearic acid USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia. Also, for use with USP monographs such as:

• Palmitic Acid
• Calcium Stearate
• Sodium Stearate
• Aluminum Monostearate
• Glycerin Suppositories
• Magnesium Stearate

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

Sales restrictions may apply.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: nwg
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable