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Emulsifiers

Sodium stearate

Also known as Sodium octadecanoate, Octadecanoic acid, sodium salt, Flexichem B

CAS 822-16-2Formula C18H35NaO2Molar mass 306.47 g/molEC 212-490-5
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant 145 suppliers listed
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Sodium stearate chemical structure, C18H35NaO2, CAS 822-16-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
822-16-2
Formula
C18H35NaO2
Appearance
White powder
Solubility
SLOWLY SOL IN COLD WATER OR COLD ALC, FREELY SOL IN HOT SOLVENTS
HS code
291570
Category
Emulsifiers
Illustrative photo, white powder in an open fibre drum in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Sodium stearate?

Plain description, key identifiers and synonyms

Sodium octadecanoate is an organic sodium salt comprising equal numbers of sodium and stearate ions. It has a role as a detergent. It contains an octadecanoate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
sodium octadecanoate
CAS number
822-16-2 CAS number cross-checked
EC number
212-490-5
Molecular formula
C18H35NaO2
UNII
QU7E2XA9TG
MDL number
MFCD00036404
INCI name
SODIUM STEARATE
InChIKey
RYYKJJJTJZKILX-UHFFFAOYSA-M
InChI
InChI=1S/C18H36O2.Na/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);/q;+1/p-1
SMILES (canonical and isomeric)
CCCCCCCCCCCCCCCCCC(=O)[O-].[Na+]

Synonyms

  • Sodium octadecanoate
  • Octadecanoic acid, sodium salt
  • Flexichem B
  • Stearic acid, sodium salt
  • Prodhygine
  • Bonderlube 235
  • Edenor FHTI
  • Nonsoul sn 15
  • Rhenogran nast 50acmf-ge1858
  • Prifer 1634
  • e-470(I)stearic acid, sodium salt
  • sodium, octadecanoate
  • Stearic acid sodium salt
  • C18H35NaO2
  • Sodium stearate (NF)
  • Sodiumstearate
  • Sodium stearate, pure
  • stearate sodium
  • Sodium palmitostearate
  • Sodium Stearate(Powder/Granular)
  • Octadecanoic acid, sodium salt (1:1)
  • Ins-470(I)stearic acid, sodium salt
  • Ins no.470(I)stearic acid, sodium salt
  • Octadecanoic acid sodium salt, Stearic acid 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

Appearance
White powderexp.
Odour
SLIGHT, TALLOW-LIKE ODORexp.
Solubility
SLOWLY SOL IN COLD WATER OR COLD ALC, FREELY SOL IN HOT SOLVENTSexp.

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
306.47 g/molcalc.
Exact mass
306.2535 Dacalc.
LogP (octanol/water)
2calc.
Topological polar surface area
40.13 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
16calc.
Heavy atoms
21calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.94calc.
Formal charge
0calc.
Stereocentres
0calc.
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

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H318Causes serious eye damage.
Precautionary statements (9)
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.

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

Sodium stearate suppliers

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All 145 suppliers
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Where suppliers are based

145 suppliers in 20 countries

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Sodium stearate 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

In glycerol suppositories, also in toothpaste, as waterproofing agent, pharmaceutic aid (emulsifying & stiffening agent).

Medication: has been used topically in sycosis & other skin diseases.

Gelling agent, in cosmetics, stabilizer in plastics.

PRIMARY GELLING AGENT IN DEODORANT STICKS IN AMOUNTS OF 7-9 wt%.

Industrial uses: Lubricating agent, Binder, Anti-adhesive/cohesive, Polymerization promoter, Surfactant (surface active agent), Processing aids not otherwise specified.

Consumer uses: Polymerization promoter, Lubricating agent, Surfactant (surface active agent), Thickening agent, Emulsifier.

Use classes: Surfactants, Safer Chemical Classes, Cosmetics.

Cosmetic ingredient, INCI name SODIUM STEARATE(cleansing, surfactant - emulsifying, surfactant - cleansing, viscosity controlling)

Roles

  • detergent
  • emulsifier
  • surfactant

Functional uses

  • Catalyst
  • Cleaning agent
  • Dispersing agent
  • Emulsifier
  • Fragrance
  • Heat stabilizer
  • Lubricating agent
  • Processing aids not otherwise specified
  • Softener and conditioner
  • Surfactant (surface active agent)
  • Thickening agent
  • Viscosity modifier

Cosmetic functions

  • Cleansing
  • Surfactant - cleansing
  • Surfactant - emulsifying
  • Viscosity controlling

How it is made

Stearic acid is reacted with an equimolar portion of sodium hydroxide.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

United States

  • Safer Choice ingredient list (USA)
  • 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 stearate is traded under.

HS 2915.70Indicative HS code

Palmitic acid, stearic acid, their salts and esters

World exports in 2024
$1.25B
+23.7% vs 2023, imports $1.13B
2019 to 2024
Top exporters
  1. Indonesia32.2%
  2. Malaysia23.0%
  3. Singapore6.5%
Top importers
  1. United States10.7%
  2. Germany6.2%
  3. China5.9%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Sodium stearate?

Sodium octadecanoate is an organic sodium salt comprising equal numbers of sodium and stearate ions. It has a role as a detergent. It contains an octadecanoate.

What is the CAS number of Sodium stearate?

The CAS registry number of Sodium stearate is 822-16-2.

What is the molecular formula and weight of Sodium stearate?

The molecular formula of Sodium stearate is C18H35NaO2 and its molar mass is 306.47 g/mol.

What is Sodium stearate used for?

In glycerol suppositories, also in toothpaste, as waterproofing agent, pharmaceutic aid (emulsifying & stiffening agent). Medication: has been used topically in sycosis & other skin diseases. Gelling agent, in cosmetics, stabilizer in plastics. PRIMARY GELLING AGENT IN DEODORANT STICKS IN AMOUNTS OF 7-9 wt%.

Is Sodium stearate hazardous?

Sodium stearate carries the GHS signal word "Danger". Main hazards: causes skin irritation, causes serious eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Sodium stearate?

Sodium stearate is usually classified under HS code 291570 (Palmitic acid, stearic acid, their salts and esters). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Sodium stearate?

CompoundList lists 145 suppliers of Sodium stearate in United States, China, India, United Kingdom and 16 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Sodium stearate in India?

21 suppliers in India list Sodium stearate on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Sodium stearate?

Suppliers quote Sodium stearate 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 stearate

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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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