Methyl stearate - ≥99% , CAS No.112-61-8

CAS: 112-61-8 Cat. No.: M109604 Formula: C19H38O2 Molecular Weight: 298.50 Beilstein Registry Number: 1786213 EC Number: 203-990-4
AVAILABLE TO ORDER
GRADE & PURITY ≥99%
Synonyms
CHEBI:69188 | A894565 | EC 203-990-4 | Methyl Stearate; Octadecanoic acid methyl ester; Methyl octadecanoate | n-Octadecanoic acid, methyl ester | W-108643 | C18 FAME | DTXSID2047640 | EINECS 203-990-4 | 4-02-00-01216 (Beilstein Handbook Reference) | AC-3
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
★
Size
USA
Germany (EU)*
Price
Qty
1g
M109604-1g
5 In stock
—
$9.90
5g
M109604-5g
6 In stock
—
$10.90
25g
M109604-25g
3 In stock
—

$13.90

$20.90
Save $7.00 (33.49%)
100g
M109604-100g
2 In stock
—

$20.90

$31.90
Save $11.00 (34.48%)
Enter a quantity for the sizes you want to add.
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Why this grade

≥99% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at -20°C Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 56 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Methyl stearate is used as a nonionic surfactant, thereby enhancing the solubility of chemicals by dissociating aggregates and unfolding proteins. It is a fatty acid ester, which is used as an emulsifier and stabilizer.

Specifications

Synonyms
CHEBI:69188 | A894565 | EC 203-990-4 | Methyl Stearate; Octadecanoic acid methyl ester; Methyl octadecanoate | n-Octadecanoic acid, methyl ester | W-108643 | C18 FAME | DTXSID2047640 | EINECS 203-990-4 | 4-02-00-01216 (Beilstein Handbook Reference) | AC-3
Specifications & Purity
≥99%
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥99%
Names and Identifiers
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/488180728
Canonical Smiles
CCCCCCCCCCCCCCCCCC(=O)OC
IUPAC Name
methyl octadecanoate
InChIKey
HPEUJPJOZXNMSJ-UHFFFAOYSA-N
INCHI
1S/C19H38O2/c1-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19(20)21-2/h3-18H2,1-2H3
Isomeric SMILES
CCCCCCCCCCCCCCCCCC(=O)OC
WGK Germany
3
RTECS
WI4460000
Molecular Weight
298.50
Beilstein
1786213
Reaxy-Rn
1786213
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1786213&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassLipids and lipid-like molecules
ClassFatty Acyls
SubclassFatty acid esters
Intermediate Tree Nodes Not available
Direct ParentFatty acid methyl esters
Alternative Parents Methyl esters  Monocarboxylic acids and derivatives  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic acyclic compounds
Substituents Fatty acid methyl ester - Methyl ester - Carboxylic acid ester - Monocarboxylic acid or derivatives - Carboxylic acid derivative - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Carbonyl group - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as fatty acid methyl esters. These are compounds containing a fatty acid that is esterified with a methyl group. They have the general structure RC(=O)OR', where R=fatty aliphatic tail or organyl group and R'=methyl group.
External Descriptors Wax monoesters
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

53 results found

Lot NumberCertificate TypeDateItem
I26081091Certificate of AnalysisSep 10, 2026 M109604
I26081090Certificate of AnalysisSep 10, 2026 M109604
G2603001Certificate of AnalysisMay 19, 2026 M109604
E2613373Certificate of AnalysisMay 19, 2026 M109604
E2613372Certificate of AnalysisMay 19, 2026 M109604
E2613371Certificate of AnalysisMay 19, 2026 M109604
L2525385Certificate of AnalysisJan 06, 2026 M109604
L2525377Certificate of AnalysisJan 06, 2026 M109604
L2525376Certificate of AnalysisJan 06, 2026 M109604
B2627112Certificate of AnalysisJan 06, 2026 M109604
D2613087Certificate of AnalysisJan 06, 2026 M109604
G2518523Certificate of AnalysisJul 21, 2025 M109604
G2518504Certificate of AnalysisJul 21, 2025 M109604
G2518524Certificate of AnalysisJul 21, 2025 M109604
K2519063Certificate of AnalysisJul 21, 2025 M109604
G2512022Certificate of AnalysisMar 08, 2025 M109604
C2505726Certificate of AnalysisMar 08, 2025 M109604
C2505725Certificate of AnalysisMar 08, 2025 M109604
C2505717Certificate of AnalysisMar 08, 2025 M109604
F2524078Certificate of AnalysisMar 08, 2025 M109604
I2429227Certificate of AnalysisOct 11, 2024 M109604
I2429228Certificate of AnalysisOct 11, 2024 M109604
I2429229Certificate of AnalysisOct 11, 2024 M109604
I2429230Certificate of AnalysisOct 11, 2024 M109604
B2508069Certificate of AnalysisOct 11, 2024 M109604
E2416314Certificate of AnalysisMay 27, 2024 M109604
E2416313Certificate of AnalysisMay 27, 2024 M109604
E2416309Certificate of AnalysisMay 27, 2024 M109604
J2327514Certificate of AnalysisOct 30, 2023 M109604
J2327513Certificate of AnalysisOct 30, 2023 M109604
J2327519Certificate of AnalysisOct 30, 2023 M109604
F23251527Certificate of AnalysisJun 30, 2023 M109604
F23251427Certificate of AnalysisJun 30, 2023 M109604
F23251423Certificate of AnalysisJun 30, 2023 M109604
F23251055Certificate of AnalysisJun 30, 2023 M109604
F23251050Certificate of AnalysisJun 30, 2023 M109604
F23251046Certificate of AnalysisJun 30, 2023 M109604
F23251043Certificate of AnalysisJun 30, 2023 M109604
B2328731Certificate of AnalysisMar 03, 2023 M109604
B2328739Certificate of AnalysisMar 03, 2023 M109604
B2328738Certificate of AnalysisMar 03, 2023 M109604
B2328735Certificate of AnalysisMar 03, 2023 M109604
B2328732Certificate of AnalysisMar 03, 2023 M109604
B2328730Certificate of AnalysisMar 03, 2023 M109604
K2216278Certificate of AnalysisNov 18, 2022 M109604
K2216275Certificate of AnalysisNov 18, 2022 M109604
G2219640Certificate of AnalysisJul 22, 2022 M109604
G2219646Certificate of AnalysisJul 21, 2022 M109604
G2219645Certificate of AnalysisJul 21, 2022 M109604
G2206407Certificate of AnalysisJul 09, 2022 M109604
G2206406Certificate of AnalysisJul 09, 2022 M109604
G2206410Certificate of AnalysisJul 08, 2022 M109604
G2206408Certificate of AnalysisJul 08, 2022 M109604
Chemical and Physical Properties
SolubilityInsoluble in water, soluble in ether and alcohol.
Flash Point(°F)230.0 °F
Flash Point(°C)110.0 ℃
Boil Point(°C)181-182 °C/4 mmHg
Melt Point(°C)37-41°C
Molecular Weight298.500 g/mol
XLogP39.000
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count2
Rotatable Bond Count17
Exact Mass298.287 Da
Monoisotopic Mass298.287 Da
Topological Polar Surface Area26.300 Ų
Heavy Atom Count21
Formal Charge0
Complexity214.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

Frequently Asked Questions

What is the purity of this product?
This product is supplied at ≥99% purity (chemical assay). Lot-specific values are stated on the Certificate of Analysis.
How should this product be stored?
Store at ?20 °C. Freezer storage is required to maintain the specified shelf life.
How is this product shipped?
This product ships in an insulated container with ice pads. Unpack on arrival and transfer it to the storage condition stated above.
What are the CAS number, molecular formula and molecular weight?
The CAS Number is 112-61-8, the molecular formula is C19H38O2, and the molecular weight is 298.50 g/mol. InChIKey HPEUJPJOZXNMSJ-UHFFFAOYSA-N.
What documentation is provided?
Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.

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