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Stearic acid

USP/1621008 - United States Pharmacopeia (USP) Reference Standard

Synonym: 1-Heptadecanecarboxylic acid; C18:0; Cetylacetic acid; NSC 25956; NSC 261168; Octadecanoic acid; Stearophanic acid

CAS Number: 57-11-4
Empirical Formula (Hill Notation): C18H36O2
Molecular Weight: 284.48
MDL Number: MFCD00002752
Linear Formula: CH3(CH2)16COOH
Product Type: Chemical

Catalog Number PKG Qty. Price Quantity
45-1621008-500MG 500 mg
$491.00
1/EA
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API family stearic acid
application(s) pharmaceutical (small molecule)
bp 361 °C (lit.)
density 0.845 g/cm3
format neat
grade pharmaceutical primary standard
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
manufacturer/tradename USP
mp 67-72 °C (lit.)
SMILES string CCCCCCCCCCCCCCCCCC(O)=O
solubility acetone: soluble
  benzene: freely soluble
  chloroform: freely soluble
  ethanol: soluble
  ether: freely soluble
  propylene glycol: soluble
  water: practically insoluble
vapor pressure 1 mmHg ( 173.7 °C)
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.  ​
Application: Stearic acid USP reference standard for use in specified quality tests and assays.

Also used to prepare standard solution for assay and impurity analysis according to the given below monographs of United States Pharmacopeia (USP):
•  Stearic acid
•  Palmitic Acid
•  Sodium Stearate
•  Aluminum Monostearate
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 .
Other Notes: Sales restrictions may apply.
RIDADR NONH for all modes of transport
WGK Germany nwg
Flash Point(F) 235.4 °F - closed cup
Flash Point(C) 113 °C - closed cup
bp 361 °C (lit.)
mp 67-72 °C (lit.)
Density 0.845 g/cm3
UNSPSC 41116107

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