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Lipids and fatty acids

2-Methyloctadecanoic acid

Also known as 2-methylstearic acid, alpha-methylstearic acid, alpha-methyloctadecanoic acid

CAS 7217-83-6Formula C19H38O2Molar mass 298.51 g/molEC 230-607-8
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2-Methyloctadecanoic acid chemical structure, C19H38O2, CAS 7217-83-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
7217-83-6
Formula
C19H38O2
Molar mass
298.51 g/mol
EC number
230-607-8
HS code
291590
Category
Lipids and fatty acids

What is 2-Methyloctadecanoic acid?

Plain description, key identifiers and synonyms

2-methyloctadecanoic acid is a methyl-branched fatty acid that is octadecanoic (stearic) acid bearing a methyl substituent at position 2. It is a long-chain fatty acid, a branched-chain saturated fatty acid and a methyl-branched fatty acid. It is functionally related to an octadecanoic acid. It is a conjugate acid of a 2-methyloctadecanoate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-methyloctadecanoic acid
CAS number
7217-83-6 CAS number cross-checked
EC number
230-607-8
Molecular formula
C19H38O2
UNII
24T2B6RLRL
InChIKey
GBZDALHFANHWOF-UHFFFAOYSA-N
InChI
InChI=1S/C19H38O2/c1-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(2)19(20)21/h18H,3-17H2,1-2H3,(H,20,21)
SMILES (canonical and isomeric)
CCCCCCCCCCCCCCCCC(C)C(=O)O

Synonyms

  • 2-methylstearic acid
  • alpha-methylstearic acid
  • alpha-methyloctadecanoic acid
  • dl-2-Methyloctadecanoic acid
  • alpha-METHYL STEARIC ACID
  • 2-Methyloctadecanoic acid, (+-)-
  • Octadecanoic acid, 2-methyl-
  • 2-methyl-octadecanoic acid
  • methyloctadecanoic acid
  • 2-Methyloctadecanoic acid, 97%
  • 2-Methyloctadecanoic acid, (+/-)-

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
298.51 g/molcalc.
Exact mass
298.2872 Dacalc.
LogP (octanol/water)
6.58calc.
Topological polar surface area
37.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
16calc.
Heavy atoms
21calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.95calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (1 violation)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS classification
Hazard pictograms

Hazard statements

  • H413May cause long lasting harmful effects to aquatic life.
Precautionary statements (2)
  • P273Avoid release to the environment.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

2-Methyloctadecanoic acid suppliers

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2-Methyloctadecanoic acid price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Inactive in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 2-Methyloctadecanoic acid is traded under.

HS 2915.90Indicative HS code

Saturated acyclic monocarboxylic acids, anhydrides, halides, peroxides, peroxyacids and halogenated…

World exports in 2024
$3.42B
+5.6% vs 2023, imports $3.55B
2019 to 2024
Top exporters
  1. Indonesia15.9%
  2. Germany13.0%
  3. Malaysia12.4%
Top importers
  1. China14.4%
  2. Netherlands11.7%
  3. United States11.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for 2-Methyloctadecanoic acid is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2-Methyloctadecanoic acid, based on the data on this page

What is 2-Methyloctadecanoic acid?

2-methyloctadecanoic acid is a methyl-branched fatty acid that is octadecanoic (stearic) acid bearing a methyl substituent at position 2. It is a long-chain fatty acid, a branched-chain saturated fatty acid and a methyl-branched fatty acid. It is functionally related to an octadecanoic acid.

What is the CAS number of 2-Methyloctadecanoic acid?

The CAS registry number of 2-Methyloctadecanoic acid is 7217-83-6.

What is the molecular formula and weight of 2-Methyloctadecanoic acid?

The molecular formula of 2-Methyloctadecanoic acid is C19H38O2 and its molar mass is 298.51 g/mol.

Is 2-Methyloctadecanoic acid hazardous?

2-Methyloctadecanoic acid has a GHS hazard classification. Main hazards: may cause long lasting harmful effects to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Methyloctadecanoic acid?

2-Methyloctadecanoic acid is usually classified under HS code 291590 (Saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2-Methyloctadecanoic acid?

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What is the price of 2-Methyloctadecanoic acid?

Suppliers quote 2-Methyloctadecanoic acid on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle 2-Methyloctadecanoic acid

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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