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Sodium hydroxystearate

Also known as Octadecanoic acid, 12-hydroxy-, monosodium salt, 12-Hydroxystearic acid, sodium salt, Monosodium 12-hydroxystearate

CAS 13329-67-4Formula C18H35NaO3Molar mass 322.47 g/molEC 236-374-9
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Sodium hydroxystearate chemical structure, C18H35NaO3, CAS 13329-67-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
13329-67-4
Formula
C18H35NaO3
Molar mass
322.47 g/mol
EC number
236-374-9
HS code
291819
Category
Soaps and metal soaps

What is Sodium hydroxystearate?

Plain description, key identifiers and synonyms

Sodium hydroxystearate is a chemical substance with the molecular formula C18H35NaO3 and a molar mass of 322.47 g/mol. Its CAS registry number is 13329-67-4. The IUPAC name is sodium 12-hydroxyoctadecanoate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
sodium 12-hydroxyoctadecanoate
CAS number
13329-67-4 CAS number cross-checked
EC number
236-374-9
Molecular formula
C18H35NaO3
UNII
41MQN4869V
MDL number
MFCD30534058
INCI name
SODIUM HYDROXYSTEARATE
InChIKey
NTVDGBKMGBRCKB-UHFFFAOYSA-M
InChI
InChI=1S/C18H36O3.Na/c1-2-3-4-11-14-17(19)15-12-9-7-5-6-8-10-13-16-18(20)21;/h17,19H,2-16H2,1H3,(H,20,21);/q;+1/p-1
SMILES (canonical and isomeric)
CCCCCCC(CCCCCCCCCCC(=O)[O-])O.[Na+]

Synonyms

  • Octadecanoic acid, 12-hydroxy-, monosodium salt
  • 12-Hydroxystearic acid, sodium salt
  • Monosodium 12-hydroxystearate
  • Octadecanoic acid, 12-hydroxy-, sodium salt (1:1)
  • (+-)-Sodium hydroxystearate
  • Sodium hydroxystearate, (+-)-
  • Sodium 12-hydroxyoctadecanoate
  • sodium, 12-hydroxyoctadecanoate
  • sodium 12-hydroxystearate
  • C18H35NaO3
  • (+/-)-Sodium hydroxystearate
  • Sodium hydroxystearate, (+/-)-
  • Octadecanoic acid, 12-hydroxy-, sodium salt

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
322.47 g/molcalc.
Exact mass
322.2484 Dacalc.
LogP (octanol/water)
0.97calc.
Topological polar surface area
60.36 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
16calc.
Heavy atoms
22calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.94calc.
Formal charge
0calc.
Stereocentres
1calc.
Components
2calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Sodium hydroxystearate suppliers

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Sodium hydroxystearate price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Cosmetic ingredient, INCI name SODIUM HYDROXYSTEARATE(cleansing, surfactant - cleansing)

Functional uses

  • Cleaning agent
  • Surfactant (surface active agent)

Cosmetic functions

  • Cleansing
  • Surfactant - cleansing

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

United States

  • TSCA inventory (USA)
    Status: Active 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 Sodium hydroxystearate is traded under.

HS 2918.19Indicative HS code

Carboxylic acids with alcohol function but without other oxygen function, their…

World exports in 2024
$1.37B
+0.5% vs 2023, imports $1.18B
2019 to 2024
Top exporters
  1. China23.7%
  2. Italy14.7%
  3. India * partner reported12.0%
Top importers
  1. Germany11.7%
  2. South Korea9.8%
  3. Italy9.6%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Sodium hydroxystearate, based on the data on this page

What is Sodium hydroxystearate?

Sodium hydroxystearate is a chemical substance with the molecular formula C18H35NaO3 and a molar mass of 322.47 g/mol. Its CAS registry number is 13329-67-4. The IUPAC name is sodium 12-hydroxyoctadecanoate.

What is the CAS number of Sodium hydroxystearate?

The CAS registry number of Sodium hydroxystearate is 13329-67-4.

What is the molecular formula and weight of Sodium hydroxystearate?

The molecular formula of Sodium hydroxystearate is C18H35NaO3 and its molar mass is 322.47 g/mol.

What is Sodium hydroxystearate used for?

Known uses and roles of Sodium hydroxystearate include surfactants and cleansing agents in cosmetics and personal care, surfactants in home care and cleaning, cleansing, surfactant - cleansing, cleaning agent and 1 more.

Is Sodium hydroxystearate hazardous?

No GHS hazard classification for Sodium hydroxystearate is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Sodium hydroxystearate?

Sodium hydroxystearate is usually classified under HS code 291819 (Carboxylic acids with alcohol function but without other oxygen function, their…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Sodium hydroxystearate?

Post a free request on CompoundList and suppliers of Sodium hydroxystearate will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Sodium hydroxystearate?

Suppliers quote Sodium hydroxystearate 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 Sodium hydroxystearate

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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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