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O652

Sigma-Aldrich

Octadecane

99%

Synonym(s):

C18-n-Alkane, n-Octadecane

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About This Item

Linear Formula:
CH3(CH2)16CH3
CAS Number:
593-45-3
Molecular Weight:
254.49
Beilstein:
1740138
EC Number:
209-790-3
MDL number:
MFCD00009007
UNSPSC Code:
12352100
PubChem Substance ID:
24898037
NACRES:
NA.22

vapor density

8.8 (vs air)

vapor pressure

1 mmHg ( 119 °C)

Assay

99%

form

solid or liquid (Conforms to requirements)

autoignition temp.

455 °F

bp

317 °C (lit.)

mp

26-29 °C (lit.)

density

0.777 g/mL at 25 °C (lit.)

SMILES string

CCCCCCCCCCCCCCCCCC

InChI

1S/C18H38/c1-3-5-7-9-11-13-15-17-18-16-14-12-10-8-6-4-2/h3-18H2,1-2H3

InChI key

RZJRJXONCZWCBN-UHFFFAOYSA-N

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Application

n-Octadecane is generally used in developing microencapsulated phase-change materials.
It can also be used as a reactant to synthesize:
  • N-octadecylsulfonyl)-alanine sodium salt
  • 1-octadecanesulfonyl chloride
  • 2-octadecanone

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H304

Precautionary Statements

P301 + P310 - P331 - P405 - P501

Hazard Classifications

Asp. Tox. 1

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

330.8 °F - closed cup

Flash Point(C)

166 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Synthesis and Physicochemical Properties of Alanine?Based Surfactants.
Bougueroua M, et al.
Journal of Surfactants and Detergents, 19(6), 1121-1131 (2016)
Ahmad Fariz Nicholas et al.
Nanomaterials (Basel, Switzerland), 8(9) (2018-09-08)
The preparation of activated carbon using palm kernel shells as the precursor (PKSAC) was successfully accomplished after the parametric optimization of the carbonization temperature, carbonization holding time, and the ratio of the activator (H₃PO₄) to the precursor. Optimization at 500
Fundamental time scales governing organic aerosol multiphase partitioning and oxidative aging.
Zhang H, et al.
Environmental Science & Technology, 49(16), 9768-9777 (2015)
Fabrication and performances of microencapsulated phase change materials based on n-octadecane core and resorcinol-modified melamine?formaldehyde shell.
Zhang H and Wang X
Colloids Surf., 332(2-3), 129-138 (2009)
Ho Young Woo et al.
Nanomaterials (Basel, Switzerland), 11(1) (2021-01-21)
In this study, we demonstrate the colloidal synthesis of nearly monodisperse, sub-100-nm phase change material (PCM) nanobeads with an organic n-paraffin core and poly(methylmethacrylate) (PMMA) shell. PCM nanobeads are synthesized via emulsion polymerization using ammonium persulfate as an initiator and
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