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Emulsifiers

Hexadecyl phosphate

Also known as Hexadecyl dihydrogen phosphate, Cetyl phosphate, 1-Hexadecanol, dihydrogen phosphate

CAS 3539-43-3Formula C16H35O4PMolar mass 322.43 g/molEC 222-581-1
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant 3 suppliers listed
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Hexadecyl phosphate chemical structure, C16H35O4P, CAS 3539-43-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
3539-43-3
Formula
C16H35O4P
Molar mass
322.43 g/mol
Physical form
Powder
HS code
291990
Category
Emulsifiers
Illustrative photo, closed blue fibre drums on a pallet in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Hexadecyl phosphate?

Plain description, key identifiers and synonyms

Hexadecyl phosphate is a chemical substance with the molecular formula C16H35O4P and a molar mass of 322.43 g/mol. Its CAS registry number is 3539-43-3. The IUPAC name is hexadecyl dihydrogen phosphate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
hexadecyl dihydrogen phosphate
CAS number
3539-43-3 CAS number cross-checked
EC number
222-581-1
Molecular formula
C16H35O4P
UNII
VT07D6X67O
INCI name
CETYL PHOSPHATE
InChIKey
ZUVCYFMOHFTGDM-UHFFFAOYSA-N
InChI
InChI=1S/C16H35O4P/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-20-21(17,18)19/h2-16H2,1H3,(H2,17,18,19)
SMILES (canonical and isomeric)
CCCCCCCCCCCCCCCCOP(=O)(O)O

Synonyms

  • Hexadecyl dihydrogen phosphate
  • Cetyl phosphate
  • 1-Hexadecanol, dihydrogen phosphate
  • Hostaphat CC 100
  • Mackester cep
  • Crodafos mca
  • Amphisol a
  • monocetyl phosphate
  • 1-Hexadecanol,1-(dihydrogen phosphate)
  • cetyl dihydrogen phosphate
  • Phosphoric acid monohexadecyl ester
  • monocetylphosphoric acid
  • 1-Hexadecanol, 1-(dihydrogen phosphate)

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

Physical form
Powderexp.

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
322.43 g/molcalc.
Exact mass
322.2273 Dacalc.
LogP (octanol/water)
5.58calc.
Topological polar surface area
66.76 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
16calc.
Heavy atoms
21calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
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 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

Hexadecyl phosphate suppliers

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All 3 suppliers

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Where suppliers are based

3 suppliers in 1 country

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Hexadecyl phosphate 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

Industrial uses: Lubricating agent, Surfactant (surface active agent), Emulsifier.

Consumer uses: Emulsifier, Surfactant (surface active agent).

Use classes: Cosmetics.

Cosmetic ingredient, INCI name CETYL PHOSPHATE(surfactant - emulsifying, surfactant - cleansing)

Functional uses

  • Emulsifier
  • Surfactant (surface active agent)

Cosmetic functions

  • Surfactant - cleansing
  • Surfactant - emulsifying

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, Regulatory flags: Added by a premanufacture notice

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Hexadecyl phosphate is traded under.

HS 2919.90Indicative HS code

Phosphoric, and their salts, including lactophosphates, their halogenated, sulphonated, nitrated…

World exports in 2024
$940M
−0.7% vs 2023, imports $863M
2019 to 2024
Top exporters
  1. China55.6%
  2. Germany10.6%
  3. Italy6.2%
Top importers
  1. United States15.8%
  2. South Korea10.1%
  3. Germany6.4%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Hexadecyl phosphate, based on the data on this page

What is Hexadecyl phosphate?

Hexadecyl phosphate is a chemical substance with the molecular formula C16H35O4P and a molar mass of 322.43 g/mol. Its CAS registry number is 3539-43-3. The IUPAC name is hexadecyl dihydrogen phosphate.

What is the CAS number of Hexadecyl phosphate?

The CAS registry number of Hexadecyl phosphate is 3539-43-3.

What is the molecular formula and weight of Hexadecyl phosphate?

The molecular formula of Hexadecyl phosphate is C16H35O4P and its molar mass is 322.43 g/mol.

What is Hexadecyl phosphate used for?

Industrial uses: Lubricating agent, Surfactant (surface active agent), Emulsifier. Consumer uses: Emulsifier, Surfactant (surface active agent). Use classes: Cosmetics.

Is Hexadecyl phosphate hazardous?

Hexadecyl phosphate 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 Hexadecyl phosphate?

Hexadecyl phosphate is usually classified under HS code 291990 (Phosphoric esters and their salts, including lactophosphates, their halogenated…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Hexadecyl phosphate?

CompoundList lists 3 suppliers of Hexadecyl phosphate in United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Hexadecyl phosphate?

Suppliers quote Hexadecyl phosphate 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 Hexadecyl phosphate

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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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